Volume III Part 4: Chapters 16 - 20

Chapter 17. Commercial Profit

We have seen in Book II that the pure functions of capital in the sphere of Circulation – the operations which the industrial capitalist must perform, first, to realise the value of his commodities, and second, to reconvert this value into elements of production, operations effecting the metamorphosis of commodity-capital, C' – M – C, hence the acts of selling and buying-produce neither value nor surplus-value. It was rather seen that the time required for this purpose, objectively in regard to commodities and subjectively in regard to the capitalist, sets the limit to the production of value and surplus-value. What is true of the metamorphosis of commodity-capital in general, is, of course, not in the least altered by the fact that a part of it may assume the shape of commercial capital, or that the operations, effecting the metamorphosis of commodity-capital, appear as the special concern of a special group of capitalists, or as the exclusive function of a portion of the money-capital. If selling and buying commodities – and that is what the metamorphosis of commodity-capital C' – M – C amounts to – by industrial capitalists themselves are not operations which create value or surplus-value, they will certainly not create either of these when carried out by persons other than the industrial capitalists. Furthermore, if that portion of the total social capital, which must continually be on hand as money-capital, in order that the process of reproduction is not interrupted by the process of circulation and proceeds continuously – if this money-capital creates neither value nor surplus-value, it cannot acquire the properties of creating them by being continually thrown into circulation by some section of capitalists other than the industrial capitalists, to perform the same function. We have already indicated to what extent merchant's capital may be indirectly productive, and we shall later discuss this point at greater length.
Commercial capital, therefore – stripped of all heterogeneous functions, such as storing, expressing, transporting, distributing, retailing, which may be connected with it, and confined to its true function of buying in order to sell – creates neither value nor surplus-value, but acts as middleman in their realisation and thereby simultaneously in the actual exchange of commodities, i.e., in their transfer from hand to hand, in the social metabolism. Nevertheless, since the circulation phase of industrial capital is just as much a phase of the reproduction process as production is, the capital operating independently in the process of circulation must yield the average annual profit just as well as capital operating in the various branches of production. Should merchant's capital yield a higher percentage of average profit than industrial capital, then a portion of the latter would transform itself into merchant's capital. Should it yield a lower average profit, then the converse would result. A portion of the merchant's capital would then be transformed into industrial capital. No species of capital changes its purpose, or function, with greater ease than merchant's capital.
Since merchant's capital does not itself produce surplus-value, it is evident that the surplus-value which it pockets in the form of average profit must be a portion of the surplus-value produced by the total productive capital. But now the question arises: How does merchant's capital attract its share of the surplus-value or profit produced by the productive capital?
It is just an illusion that commercial profit is a mere addition to, or a nominal rise of, the prices of commodities in excess of their value.
It is plain that the merchant can draw his profit only out of the price of the commodities he sells, and plainer still that the profit he makes in selling his commodities must be equal to the difference between his purchase price and his selling price, i.e., equal to the excess of the latter over the former.
It is possible that additional costs (costs of circulation) may enter into the commodities after their purchase and before their sale, and it is also possible that this may not happen. If such costs should occur, it is plain that the excess of the selling price over the purchase price would not be all profit. To simplify the analysis, we shall assume at this point that no such costs occur. For the industrial capitalist the difference between the selling price and the purchase price of his commodities is equal to the difference between their price of production and their cost-price, or, from the standpoint of the total social capital, equal to the difference between the value of the commodities and their cost-price for the capitalists, which again comes down to the difference between the total quantity of labour and the quantity of paid labour incorporated in them. Before the commodities bought by the industrial capitalist are thrown back on the market as saleable commodities, they pass through the process of production, in which alone the portion of their price to be realised as profit is created. But it is different with the merchant. The commodities are in his hands only so long as they are in the process of circulation. He merely continues their sale, the realisation of their price which was begun by the productive capitalist, and therefore does not cause them to pass through any intermediate process in which they could again absorb surplusvalue. While the industrial capitalist merely realises the previously produced surplus-value, or profit, in the process of circulation, the merchant has not only to realise his profit during and through circulation, but must first make it. There appears to be no other way of doing this outside of selling the commodities bought by him from the industrial capitalist at their prices of production, or, from the standpoint of the total commodity-capital, at their values in excess of their prices of production, making a nominal extra charge to their prices, hence, selling them, from the standpoint of the total commodity-capital, above their value, and pocketing this excess of their nominal value over their real value; in short, selling them for more than they are worth.
This method of adding an extra charge is easy to grasp. For instance, one yard of linen costs 2s. If I want to make a 10% profit in reselling it, I must add 1/10 to the price, hence sell the yard at 2s. 2 2/5 d. The difference between its actual price of production and its selling price is then = 2 2/5d., and this represents a profit of 10% on 2s. This amounts to my selling the yard to the buyer at a price which is in reality the price of 1 1/10 yard. Or, what amounts to the same, it is as though I sold to the buyer only 10/11 of a yard for 2s. and kept 1/11 of a yard for myself. In fact I can buy back 1/11 of a yard for 2 2/5d. at the price of 2s. 2 2/5d. per yard. This would, therefore, be just a roundabout way of sharing in the surplus-value and surplus-product by a nominal rise in the price of commodities.
This is realisation of commercial profit by raising the price of commodities, as it appears at first glance. And, indeed, this whole notion that profit originates from a nominal rise in the price of commodities, or from their sale above their value, springs from the observations of commercial capital.
But it is quickly apparent on closer inspection that this is mere illusion. Assuming capitalist production to be predominant, commercial profit cannot be realised in this manner. (It is here always a question of averages, not of isolated cases.) Why do we assume that the merchant can realise a profit of no more than, say, 10% on his commodities by selling them 10% above their price of production? Because we assume that the producer of these commodities, the industrial capitalist (who appears as “the producer” before the outside world, being the personification of industrial capital), had sold them to the dealer at their prices of production. If the purchase price of commodities paid by the dealer is equal to their price of production, or, in the last instance, equal to their value, so that the price of production or, in the last instance, the value, represent the merchant's cost-price, then, indeed, the excess of his selling price over his purchase price – and this difference alone is the source of his profit – must be an excess of their commercial price over their price of production, so that in the final analysis the merchant sells all commodities above their values. But why was it assumed that the industrial capitalist sells his commodities to the merchant at their prices of production? Or rather, what was taken for granted in that assumption?
It was that merchant's capital did not go into forming the general rate of profit (we are dealing with it as yet only in its capacity of commercial capital). We proceeded necessarily from this premise in discussing the general rate of profit, first, because merchant's capital as such did not exist for us at the time, and, second, because average profit, and hence the general rate of profit, had first to be developed as a levelling of profits or surplus-values actually produced by the industrial capitals in the different spheres of production. But in the case of merchant's capital we are dealing with a capital which shares in the profit without participating in its production. Hence, it is now necessary to supplement our earlier exposition.
Suppose, the total industrial capital advanced in the course of the year = 720c + 180v = 900 (say million £), and that s' = 100%. The product therefore = 720c + 180v + 180s. Let us call this product or the produced commodity-capital, C, whose value, or price of production (since both are identical for the totality of commodities) = 1,080, and the rate of profit for the total social capital of 900 = 20%. These 20% are, according to our earlier analyses, the average rate of profit, since the surplus-value is not calculated here on this or that capital of any particular composition, but on the total industrial capital of average composition. Thus, C = 1,080, and the rate of profit = 20%. Let us now assume, however, that aside from these £900 of industrial capital, there are still £100 of merchant's capital, which shares in the profit pro rata to its magnitude just as the former. According to our assumption, it is 1/10 of the total capital of 1,000. Therefore, it participates to the extent of 1/10 in the total surplus-value of 180, and thus secures a profit of 18%. Actually, then, the profit to be distributed among the other 1/10 of the total capital is only = 162, or on the capital of 900 likewise = 18%. Hence, the price at which C is sold by the owners of the industrial capital of 900 to the merchants = 720c + 180v + 162s = 1,062. If the dealer then adds the average profit of 18% to his capital of 100, he sells the commodities at 1,062 + 18 = 1,080, i.e., at their price of production, or, from the standpoint of the total commodity-capital, at their value, although he makes his profit only during and through the circulation process, and only from an excess of his selling price over his purchase price. Yet he does not sell the commodities above their value, or above their price of production, precisely because he has bought them from the industrial capitalist below their value, or below their price of production.
Thus, merchant's capital enters the formation of the general rate of profit as a determinant pro rata to its part in the total capital. Hence, if we say in the given case that the average rate of profit = 18%, it would = 20%, if it were not that 1/10 of the total capital was merchant's capital and the general rate of profit thereby lowered by 1/10. This leads to a closer and more comprehensive definition of the price of production. By price of production we mean, just as before, the price of a commodity = its costs (the value of the constant + variable capital contained in it) + the average profit. But this average profit is now determined differently. It is determined by the total profit produced by the total productive capital; but not as calculated on the total productive capital alone, so that if this = 900, as assumed above, and the profit = 180, then the average rate of profit = 180/900 = 20%. But, rather, as calculated on the total productive + merchant's capital, so that with 900 productive and 100 merchant's capital, the average rate of profit = 180/1,000 = 18%. The price of production is, therefore = k (the costs) + 18, instead of k + 20. The share of the total profit falling to merchant's capital is thus included in the average rate of profit. The actual value, or price of production, of the total commodity-capital is therefore = k + p + m (where m is commercial profit). The price of production, or the price at which the industrial capitalist as such sells his commodities, is thus smaller than the actual price of production of the commodity; or in terms of all commodities taken together, the prices at which the class of industrial capitalists sell their commodities are lower than their value. Hence, in the above case, 900 (costs) + 18% on 900, or 900 + 162= 1,062. It follows, then, that in selling a commodity at 118 for which he paid 100 the merchant does, indeed, add 18% to the price. But since this commodity, for which he paid 100, is really worth 118, he does not sell it above its value. We shall henceforth use the term price of production in this, its more precise, sense. It is evident, therefore, that the profit of the industrial capitalist equals the excess of the price of production of the commodity over its costprice, and that commercial profit, as distinct from this industrial profit, equals the excess of the selling price over the price of production of the commodity which, for the merchant, is its purchase price; but that the actual price of the commodity = its price of production + the commercial profit. Just as industrial capital realises only such profits as already exist in the value of commodities as surplus-value, so merchant's capital realises profits only because the entire surplus-value, or profit, has not as yet been fully realised in the price charged for the commodities by the industrial capitalist.1 The merchant's selling price thus exceeds the purchase price not because the former exceeds the total value, but because the latter is below this value.
Merchant's capital, therefore, participates in levelling surplus-value to average profit, although it does not take part in its production. Thus, the general rate of profit contains a deduction from surplus-value due to merchant's capital, hence a deduction from the profit of industrial capital.
It follows from the foregoing:
1) The larger the merchant's capital in proportion to the industrial capital, the smaller the rate of industrial profit, and vice versa.
2) It was demonstrated in the first part that the rate of profit is always lower than the rate of the actual surplus-value, i.e., it always understates the intensity of exploitation, as in the above case, 720c + 180v + 180s, the rate of surplus-value of 100% and a rate of profit of only 20%. And the difference becomes still greater, inasmuch as the average rate of profit appears smaller again, dropping from 20% to 18%, if the share falling to merchant's capital is also taken into account. The average rate of profit of the direct capitalist exploiter, therefore, expresses a rate of profit smaller than it actually is.
Assuming all other circumstances remaining the same, the relative volume of merchant's capital (with the exception of the small dealer who represents a hybrid form) is in inverse proportion to the velocity of its turnover, hence in inverse proportion to the energy of the process of reproduction in general. In the course of scientific analysis, the formation of a general rate of profit appears to result from industrial capitals and their competition, and is only later corrected, supplemented, and modified by the intervention of merchant's capital. In the course of its historical development, however, the process is really reversed. It is the commercial capital which first determines the prices of commodities more or less in accordance with their values, and it is the sphere of circulation, the sphere that promotes the process of reproduction, in which a general rate of profit initially takes shape. It is originally the commercial profit which determines the industrial profit. Not until the capitalist mode of production has asserted itself and the producer himself has become merchant, is commercial profit reduced to that aliquot part of the total surplus-value falling to the share of merchant's capital as an aliquot part of the total capital engaged in the social process of reproduction.
It was seen in the supplementary equalisation of profit through the intervention of merchant's capital that no additional element entered the value of commodities with the merchant's advanced money-capital, and that the extra charge to the price, whereby the merchant makes his profit, was merely equal to that portion of the value of the commodities, which productive capital had not calculated in the price of production, i.e., had left out. The case of this money-capital is similar to that of the industrial capitalist's fixed capital, since it is not consumed and its value, therefore, does not make up an element of the value of commodity. It is in the purchase price of commodity-capital that the merchant replaces its price of production = M, in money. His own selling price, as previously shown, is = M + ∆M, where ∆M stands for the addition to the price of commodities determined by the general rate of profit. Once he sells the commodities, his original money-capital, which he advanced for their purchase, returns to him together with this ∆M. We see once more that his money-capital is nothing but the industrial capitalist's commodity-capital transformed into money-capital, which affects the magnitude of the value of this commoditycapital no more than would a direct sale of the latter to the ultimate consumer, instead of to the merchant. It, actually, merely anticipates the payment of the consumer. However, this is correct only on the condition hitherto assumed, that the merchant has no overhead expenses, or that aside from the money-capital which he must advance to buy commodities from the producer he need not advance any other capital, circulating or fixed, in the process of commodity metamorphosis., the process of buying and selling. But this is not so in reality, as we have seen in the analysis of the costs of circulation (Book II, Chap. VI). These costs of circulation are partly expenses which the merchant has to reclaim from other agents of circulation, and partly expenses arising directly from his specific business.
No matter what the nature of these costs of circulation – whether they arise from the purely commercial nature of the merchant's establishment as such and hence belong to the merchant's specific costs of circulation, or represent items which are charges for subsequent processes of production added in the process of circulation, such as expressage, transport, storage, etc. – they always require of the merchant, aside from his money-capital, advanced to the purchase of commodities, some additional capital for the purchase and payment of such means of circulation. As much of this element of cost as consists of circulating capital passes wholly as an additional element into the selling price of the commodities; and as much of it as consists of fixed capital only to the extent of its wear and tear. But only as an element which forms a nominal value, even if as the purely commercial costs of circulation, it does not add any real value to the commodities. But whether fixed or circulating, this entire additional capital participates in forming the general rate of profit.
The purely commercial costs of circulation (hence, excluding costs of expressage, shipping, storage, etc.) resolve themselves into costs required to realise the value of commodities, to transform it from commodities into money, or from money into commodities, to effect their exchange. We leave entirely out of consideration all possible processes of production which may continue in the process of circulation, and from which the merchant's business can be altogether separated; as, in fact, the actual transport industry and expressage may be, and are, industrial branches entirely distinct from commercial; and purchaseable and saleable commodities may be stored in docks or in other public premises, with the resultant cost of storage being charged to the merchant by third persons inasmuch as he has to advance it. All this takes place in actual wholesale commerce, where merchant's capital appears in its purest form, unmixed with other functions. The express company owner, the railway director, and the shipowner, are not “merchants.” The costs which we consider here are those of buying and selling. We have already remarked earlier that these resolve themselves into accounting, book-keeping, marketing, correspondence, etc. The constant capital required for this purpose consists of offices, paper, postage, etc. The other costs break up into variable capital advanced for the employment of mercantile wage-workers. (Expressage, transport costs, advances for customs duties, etc., may partly be considered as being advanced by the merchant in purchasing commodities and thus enter the purchase price as far as he is concerned.)
All these costs are not incurred in producing the use-value of commodities, but in realising their value. They are pure costs of circulation. They do not enter into the immediate process of production, but since they are part of the process of circulation they are also part of the total process of reproduction.
The only portion of these costs of interest to us at this point is that advanced as variable capital. (The following questions should also be analysed: First, how does the law that only necessary labour enters the value of commodities operate in the process of circulation? Second, how does accumulation obtain in merchant's capital? Third, how does merchant's capital function in the actual aggregate reproduction process of society?)
These costs arise due to the product having the economic form of a commodity.
If the labour-time which the industrial capitalists themselves lose while directly selling commodities to one another – hence, speaking objectively, the circulation time of the commodities – does not add value to these commodities, it is evident that this labour-time does not change its nature in the least by falling to the merchant instead of the industrial capitalist. The conversion of commodities (products) into money, and of money into commodities (means of production) is a necessary function of industrial capital and, therefore, a necessary operation of the capitalist – who is actually but personified capital endowed with a consciousness of its own and a will. But these functions neither create value, nor produce surplus-value. By performing these operations and carrying on the functions of capital in the sphere of circulation after the productive capitalist has ceased to be involved the merchant merely takes the place of the industrial capitalist. The labour-time required in these operations is devoted to certain necessary operations of the reproduction process of capital, but yields no additional value. If the merchant did not perform these operations (hence, did not expend the labour-time entailed), he would not be applying his capital as a circulation agent of industrial capital; he would not then be continuing the interrupted function of the industrial capitalist, and consequently could not participate as a capitalist pro rata to his advanced capital, in the mass of profit produced by industrial capitalists. In order to share in the mass of surplus-value, to expand the value of his advance as capital, the commercial capitalist need not employ wage-workers. If his business and capital are small, he may be the only worker in it. He is paid with that portion of the profit which falls to him through the difference between the purchase price paid by him for commodities and their actual price of production.
But, on the other hand, the profit realised by the merchant on a small amount of advanced capital may be no larger, or may even be smaller, than the wages of one of the better-paid skilled wageworkers. In fact, he brushes shoulders with many direct commercial agents of the productive capitalist, such as buyers, sellers, travellers, who enjoy the same or a higher income either in the form of wages, or in the form of a share in the profit (percentages, bonuses) made from each sale. In the first case, the merchant pockets the mercantile profit as an independent capitalist; in the other, the salesman, the industrial capitalist's wage-labourer, receives a portion of the profit either in the form of wages, or as a proportional share in the profit of the industrial capitalist, whose direct agent he is, while his employer pockets both the industrial and the commercial profit. But in all these cases, although his income may appear to the circulation agent as an ordinary wage, as payment for work performed, and although, where it does not so appear, the profit may be no larger than the wage of a better-paid labourer, his income is derived solely from the mercantile profit. This follows from his labour not being labour which produces value.
The lengthening of the act of circulation represents for the industrial capitalist 1) a personal loss of time, since it prevents him from performing in person his function as manager of the productive process; 2) a longer stay of his product in money- or commodity-form, in the circulation process, hence in a process where it does not expand value and where the direct production process is interrupted. If this process is not to be interrupted, production must either be curtailed, or more money-capital must be advanced to maintain the process of production on the same scale. This means that each time either a smaller profit is made on the capital hitherto invested, or that additional money-capital must be advanced to make the previous profit. All this remains unchanged when the merchant takes the place of the industrial capitalist. Instead of the industrial capitalist devoting more time to the process of circulation, it is the merchant who is so engaged; instead of the industrial capitalist it is the merchant who advances additional capital for circulation; or, what amounts to the same thing, instead of a large portion of the industrial capital being continually diverted into the process of circulation, it is the merchant's capital which is wholly tied up in it; and instead of making a smaller profit, the industrial capitalist must yield a portion of his profit wholly to the merchant. So long as merchant's capital remains within the bounds in which it is necessary, the only difference is that this division of the functions of capital reduces the time exclusively used up in the process of circulation, that less additional capital is advanced for this purpose, and that the loss in total profit, represented by mercantile profit, is smaller than it would otherwise have been. If in the above example, 720c + 180v + 180s, assisted by a merchant's capital of 100, produces a profit of 162, or 18%, for the industrial capitalist, hence implying a deduction of 18, then, but for this independent merchant's capital, the additional capital required would probably be 200, and we should have a total advance by the industrial capitalist of 1,100 instead of 900, which, based upon a surplus-value of 180, would yield a rate of profit of only 16 4/11%.
If the industrial capitalist who acts as his own merchant advances not only the additional capital to buy new commodities before his product in the process of circulation has been reconverted into money, but also capital (office expenses and wages for commercial employees) to realise the value of his commodity-capital, or, in other words, for the process of circulation, then these supplements form additional capital, but do not create surplus-value. They must be made good out of the value of the commodities, because a portion of the value of these commodities must be reconverted into these circulation costs. But no additional surplus-value is created thereby. So far as this concerns the total capital of society, it means in fact that a portion of it must be set aside for secondary operations which are no part of the self-expansion process, and that this portion of the social capital must be continually reproduced for this purpose. This reduces the rate of profit for the individual capitalist and for the entire class of industrial capitalists, an effect arising from every new investment of additional capital whenever such capital is required to set in motion the same mass of variable capital.
In so far as these additional costs connected with the business of circulation are transferred from the industrial to the commercial capitalist, there takes place a similar reduction in the rate of profit, but to a lesser degree and in a different way. It now develops that the merchant advances more capital than would be necessary if these costs did not exist, and that the profit on this additional capital increases the amount of the commercial profit, so that more of the merchant's capital joins industrial capital in levelling the average rate of profit and thereby the average profit falls. If in our above example an additional capital of 50 is advanced besides the merchant's capital of 100 to cover the costs in question, then the total surplus-value of 180 is distributed with respect to a productive capital of 900 plus a merchant's capital of 150, together = 1,050. The average rate of profit, therefore, sinks to 17 1/7% The industrial capitalist sells his commodities to the merchant at 900 + 154 2/7 = 1,0542 1/7, and the merchant sells them at 1,130 (1,080 + 50 for costs which he must recover). Moreover, it must be admitted that the division between merchant's and industrial capital is accompanied by a centralisation of the commercial expenses and, consequently, by their reduction.
The question now arises: What about the commercial wage-workers employed by the commercial capitalist, here the merchant?
In one respect, such a commercial employee is a wage-worker like any other. In the first place, his labour-power is bought with the variable capital of the merchant, not with money expended as revenue, and consequently it is not bought for private service, but for the purpose of expanding the value of the capital advanced for it. In the second place, the value of his labour-power, and thus his wages, are determined as those of other wage-workers, i.e., by the cost of production and reproduction of his specific labour-power, not by the product of his labour.
However, we must make the same distinction between him and the wage-workers directly employed by industrial capital which exists between industrial capital and merchant's capital, and thus between the industrial capitalist and the merchant. Since the merchant, as a mere agent of circulation, produces neither value nor surplus-value (for the additional value which he adds to the commodities through his expenses resolves itself into an addition of previously existing values, although the question here poses itself, how he preserves this value of his constant capital?) it follows that the mercantile workers employed by him in these same functions cannot directly create surplus-value for him. Here, as in the case of productive labourers, we assume that wages are determined by the value of the labour-power, and that, hence, the merchant does not enrich himself by depressing wages, so that he does not enter into his cost account an advance for labour which he has paid only in part; in other words, that he does not enrich himself through cheating his clerks, etc.
The difficulty as concerns mercantile wage-workers is by no means to explain how they produce direct profits for their employer without creating any direct surplus-value (of which profit is but a transmuted form). This question has, indeed, already been solved in the general analysis of commercial profits. Just as industrial capital makes profit by selling labour embodied and realised in commodities, for which it has not paid any equivalent, so merchant's capital derives profit from not paying in full to productive capital for all the unpaid labour contained in the commodities (in commodities, in so far as capital invested in their production functions as an aliquot part of the total industrial capital), and by demanding payment for this unpaid portion still contained in the commodities when making a sale. The relation of merchant's capital to surplus-value is different from that of industrial capital. The latter produces surplus-value by directly appropriating the unpaid labour of others. The former appropriates a portion of this surplus-value by having this portion transferred from industrial capital to itself.
It is only through its function of realising values that merchant's capital acts as capital in the process of reproduction, and hence draws on the surplus-value produced by the total capital. The mass of the individual merchant's profits depends on the mass of capital that he can apply in this process, and he can apply so much more of it in buying and selling, the more the unpaid labour of his clerks. The very function, by virtue of which the merchant's money becomes capital, is largely done through his employees. The unpaid labour of these clerks, while it does not create surplusvalue, enables him to appropriate surplus-value, which, in effect, amounts to the same thing with respect to his capital. It is, therefore, a source of profit for him. Otherwise commerce could never be conducted on a large scale, capitalistically.
Just as the labourer's unpaid labour directly creates surplus-value for productive capital, so the unpaid labour of the commercial wage-worker secures a share of this surplus-value for merchant's capital.
The difficulty lies here: Since the merchant's labour-time and labour do not create value, although they secure for him a share of already produced surplus-value, how does the matter stand with the variable capital which he lays out in purchasing commercial labour-power? Is this variable capital to be included in the cost outlays of the advanced merchant's capital? If not, this appears to conflict with the law of equalisation of the rate of profit; what capitalist would advance 150 if he could charge only 100 to advanced capital? If so, it seems to conflict with the nature of merchant's capital, since this kind of capital does not act as capital by setting in motion the labour of others, as industrial capital does, but rather by doing its own work, i.e., performing the functions of buying and selling, this being precisely the means and the reason why it receives a portion of the surplus-value produced by the industrial capital.
(We must therefore analyse the following points: the merchant's variable capital; the law of necessary labour in the sphere of circulation; how the merchant's labour maintains the value of his constant capital; the part played by merchant's capital in the process of reproduction as a whole; and, finally, the duplication in commodity-capital and money-capital, on the one hand, and in commercial capital and money-dealing capital on the other.)
If every merchant had only as much capital as he himself were able to turn over by his own labour, there would be infinite fragmentation of merchant's capital. This fragmentation would increase in the same proportion as productive capital raised production and operated with greater masses in the forward march of the capitalist mode of production. Hence, an increasing disproportion of the two. Capital in the sphere of circulation would become decentralised in the same proportion as it became centralised in the sphere of production. The purely commercial business of the industrial capitalist, and thus his purely commercial expenses, would expand infinitely thereby, for he would have to deal with, say, 1,000 merchants, instead of 100. Thus, the advantages of independently operating merchant's capital would largely be lost. And not the purely commercial expenses alone, but also the other costs of circulation, such as sorting, expressage, etc., would grow. This, as far as the industrial capital is concerned. Now let us consider merchant's capital. Firstly, the purely commercial operations. It does not take more time to deal with large figures than with small ones. It takes ten times as much time to make 10 purchases at £100 each as it does to make one purchase at £1,000. It takes ten times as much correspondence, paper, and postage, to correspond with 10 small merchants as it does with one large merchant. The clearly defined division of labour in a commercial office, in which one keeps the books, another looks after money matters, a third has charge of correspondence, one buys, another sells, a third travels, etc., saves immense quantities of labour-time, so that the number of workers employed in wholesale commerce are in no way related to the comparative size of the establishment. This is so, because in commerce much more than in industry the same function requires the same labour-time, whether performed on a large or a small scale. This is the reason why concentration appears earlier historically in the merchant's business than in the industrial workshop. Further, regarding outlays in constant capital. One hundred small offices cost incomparably more than one large office, 100 small warehouses more than a large one, etc. The costs of transport, which enter the accounts of a commercial establishment at least as costs to be advanced, grow with the fragmentation.
The industrial capitalist would have to lay out more in labour and in circulation costs in the commercial part of his business. The same merchant's capital, when divided among many small capitalists, would, owing to this fragmentation, require more labourers to perform its functions, and more merchant's capital would, furthermore, be needed to turn over the same commoditycapital.
Suppose B is the entire merchant's capital directly applied in buying and selling commodities, and b the corresponding variable capital paid out in wages to the commercial employees. Then B + b is smaller than the total merchant's capital, B, would be if every merchant had to get along without assistants, hence would invest nothing in b. However, we have not yet overcome the difficulty.
The selling price of the commodities must suffice 1) to pay the average profit on B + b. This is explained if only by the fact that B + b is generally a reduction of the original B, representing a smaller merchant's capital than would be required without b. But this selling price must suffice 2) to cover not only the additional profit on b, but to replace also the paid wages, the merchant's variable capital = b. This last consideration gives rise to the difficulty. Does b represent a new constituent of the price, or is it merely a part of the profit made by means of B + b, which appears as wages only so far as the mercantile wage-worker is concerned, and as concerns the merchant simply replaces variable capital? In the latter case, the merchant's profit on his advanced capital B + b would just equal the profit due to B by virtue of the general rate, plus b, which he pays out in the form of wages, but which does not itself yield a profit.
The crux of the matter is, indeed, to find the limits (mathematically speaking) of b. Let us first accurately define the problem. Let B stand for capital invested directly in buying and selling commodities, K for the constant capital (actual handling costs) consumed in this function, and b for the variable capital invested by the merchant.
Recovering B offers no difficulties at all. For the merchant it is simply the realised purchase price, and the price of production for the manufacturer. It is the price paid by the merchant, and in reselling he recovers B as part of his selling price; in addition to this B, he makes a profit on B, as previously explained. For example, let the commodity cost £100. Suppose the profit is 10%. In that case, the commodity is sold at 110. The commodity previously cost 100, and the merchant's capital of 100 merely adds 10 to it.
Now if we look at K, it is at most as large as, but in fact smaller than, the portion of constant capital which the producer would use up in buying and selling, but then it would form an addition to the constant capital he requires directly in production. This portion, nonetheless, must be continually recovered in the price of the commodity, or, what amounts to the same, a corresponding portion of the commodity must be continually expended in this form, or, from the standpoint of the total capital of society, must be continually reproduced in this form. This portion of the advanced constant capital would have a limiting effect on the rate of profit, just as the entire mass of it directly invested in production. In so far as the industrial capitalist leaves the commercial part of his business to the merchant, he need not advance this part of the capital. The merchant advances it in his stead. In a way, he does this but nominally, since a merchant neither produces, nor reproduces, the constant capital consumed by him (the actual handling costs). Its production appears a separate business, or at least a part of the business, of some industrial capitalists who thus play a role similar to those who supply constant capital to producers of necessities of life. First, therefore, the merchant has this constant capital recovered for him and, secondly, receives his profit on it. Through both of these, therefore, the industrial capitalist's profit is reduced. But owing to economising and concentration which are bound up with division of labour, it shrinks less than it would if he himself had to advance this capital. The reduction in the rate of profit is less, because the capital thus advanced is less.
So far, then, the selling price is made up of B + K + the profit on B + K. This portion of it offers no further difficulties. But now b, the variable capital advanced by the merchant, enters into it.
The resultant selling price is B + K + b + the profit on B + K + the profit on b.
B merely recovers the purchase price and adds nothing to it but the profit on B. K adds the profit on K, and K itself; but K + the profit on K, the part of the circulation costs advanced in the form of constant capital + the corresponding average profit, would be larger in the hands of the industrial capitalist than in the merchant's. The shrinking of the average profit appears in the form of the full average profit calculated after deducting B + K from the advanced industrial capital, with the deduction from the average profit on B + K paid to the merchant, so that this deduction appears as the profit of a specific capital, merchant's capital.
But the situation is different with respect to b + the profit on b, or, in the present case, where the rate of profit is assumed = 10%, with b + 1/10 b. And the real difficulty lies here.
What the merchant buys with b is, according to our assumption, nothing but commercial labour, hence labour required to perform the functions of circulating capital, C – M and M – C. But commercial labour is the labour generally necessary for a capital to operate as merchant's capital, to help convert commodities into money and money into commodities. It is labour which realises, but does not create, values. And only in so far as a capital performs these functions – hence a capitalist performs these operations, or this work with his capital – does it serve as merchant's capital and participate in regulating the general rate of profit, i.e., draw its dividends out of the total profit. But (b + the profit on b) appears to include, first, payment for labour (for it makes no difference whether the industrial capitalist pays the merchant for his own labour, or the labour of the clerks paid by the merchant), and, secondly, the profit on the payment for this labour, which the merchant would have to perform in person. First, merchant's capital gets its b refunded, and, secondly, he makes the profit on it. This arises from the fact, therefore, that, first, it requires payment for the work whereby it operates as merchant's capital, and that, secondly, it demands the profit, because it operates as capital, i.e., because it performs work for which profit is paid to it as functioning capital. This is, therefore, the question to be solved.
Let us assume that B = 100, b = 10, and the rate of profit = 10%. We take it that K = 0, in order to leave out of consideration this element of the purchase price, which does not belong here and has already been accounted for. Hence, the selling price would = B + p + b + p (= B + Bp' + b + bp'; where p stands for the rate of profit) = 100 + 40 + 10 + 1=121.
But if b were not invested by the merchant in wages – since b is paid only for commercial labour, hence labour required, to realise the value of the commodity – capital thrown on the market by industrial capital – the matter would stand as follows: to buy or sell for B = 100, the merchant would devote his time, and we wish to assume that this is the only time at his disposal. The commercial labour represented by b, or 10, if paid for by profit instead of wages, would presuppose another merchant's capital = 100, since at 10% this makes b = 10. This second B = 100 would not additionally go into the price of commodities, but the 10% would. There would, hence, be two operations at 100 = 200, that would buy commodities at 200 + 20 = 220.
Since merchant's capital is absolutely nothing but an individualised form of a portion of industrial capital engaged in the process of circulation, all questions referring to it must be solved by representing the problem primarily in a form; in which the phenomena peculiar to merchant's capital do not yet appear independently, but still in direct connection with industrial capital, as a branch of it. As an office, distinct from a workshop, mercantile capital operates continually in the circulation process. It is here – in the office of the industrial capitalist himself – that we must first analyse the b now under consideration.
The office is from the outset always infinitesimally small compared to the industrial workshop. As for the rest, it is clear that as the scale of production is extended, commercial operations required constantly for the circulation of industrial capital, in order to sell the product existing as commodity-capital, to reconvert the money so received into means of production, and to keep account of the whole process, multiply accordingly. Calculation of prices, book-keeping, managing funds, correspondence – all belong under this head. The more developed the scale of production, the greater, even if not proportionately greater, the commercial operations of the industrial capital, and consequently the labour and other costs of circulation involved in realising value and surplus-value. This necessitates the employment of commercial wage-workers who make up the actual office staff. The outlay for these, although made in the form of wages, differs from the variable capital laid out in purchasing productive labour. It increases the outlay of the industrial capitalist, the mass of the capital to be advanced, without directly increasing surplusvalue. Because it is an outlay for labour employed solely in realising value already created. Like every other outlay of this kind, it reduces the rate of profit be-cause the advanced capital increases, but not the surplus-value. If surplus-value s remains constant while advanced capital C increases to C + ∆C, then the rate of profit s/C is replaced by the smaller rate of profit s/C + ∆C. The industrial capitalist endeavours, therefore, to cut these expenses of circulation down to a minimum, just as his expenses for constant capital. Hence, industrial capital does not maintain the same attitude to its commercial wage-labourers as it does to its productive wage-labourers. The more productive wage-labourers it employs under otherwise equal circumstances, the greater the output, and the greater the surplus-value, or profit. Conversely, however, the larger the scale of production, the greater the quantity of value and surplus-value to be realised, the greater the produced commodity-capital, the greater are the absolute, if not relative, office costs, giving rise to a kind of division of labour. To what extent profit is the precondition for these outlays, is seen, among other things, from the fact that with the increase of commercial salaries, a part of them is frequently paid by a share in the profit. It is in the nature of things that labour consisting merely of intermediate operations connected partly with calculating values, partly with realising them, and partly with reconverting the realised money into means of production, is a labour whose magnitude therefore depends on the quantity of the produced values that have to he realised, and does not act as the cause, like directly productive labour, but rather as an effect, of the respective magnitudes and masses of these values. The same applies to the other costs of circulation. To do much measuring, weighing, packing, and transporting, much must be on hand. The amount of packing, transporting, etc., depends on the quantity of commodities which are the objects of this activity, not vice versa.
The commercial worker produces no surplus-value directly. But the price of his labour is determined by the value of his labour-power, hence by its costs of production, while the application of this labour-power, its exertion, expenditure of energy, and wear and tear, is as in the ease of every other wage-labourer by no means limited by its value. His wage, therefore, is not necessarily proportionate to the mass of profit which he helps the capitalist to realise. What he costs the capitalist and what he brings in for him, are two different things. He creates no direct surplus-value, but adds to the capitalist's income by helping him to reduce the cost of realising surplus-value, inasmuch as he performs partly unpaid labour. The commercial worker, in the strict sense of the term, belongs to the better-paid class of wage-workers – to those whose labour is classed as skilled and stands above average labour. Yet the wage tends to fall, even in relation to average labour, with the advance of the capitalist mode of production. This is due partly to the division of labour in the office, implying a one-sided development of the labour capacity, the cost of which does not fall entirely on the capitalist, since the labourer's skill develops by itself through the exercise of his function, and all the more rapidly as division of labour makes it more one-sided. Secondly, because the necessary training, knowledge of commercial practices, languages, etc., is more and more rapidly, easily, universally and cheaply reproduced with the progress of science and public education the more the capitalist mode of production directs teaching methods, etc., towards practical purposes. The universality of public education enables capitalists to recruit such labourers from classes that formerly had no access to such trades and were accustomed to a lower standard of living. Moreover, this increases supply, and hence competition. With few exceptions, the labour-power of these people is therefore devaluated with the progress of capitalist production. Their wage falls, while their labour capacity increases. The capitalist increases the number of these labourers whenever he has more value and profits to realise. The increase of this labour is always a result, never a cause of more surplus-value.2

There is duplication, therefore. On the one hand, the functions as commodity-capital and moneycapital (hence further designated as merchant's capital) are general definite forms assumed by industrial capital. On the other hand, specific capitals, and therefore specific groups of capitalists, are exclusively devoted to these functions; and these functions thus develop into specific spheres of self-expansion of capital.
In the case of mercantile capital, the commercial functions and circulation costs are found only in individualised form. That side of industrial capital which is devoted to circulation, continuously exists not only in the shape of commodity-capital and money-capital, but also in the office alongside the workshop. But it becomes independent in the case of mercantile capital. In the latter's case, the office is its only workshop. The portion of capital employed in the form of circulation costs appears much larger in the case of the big merchant than in that of the industrialist, because besides their own offices connected with every industrial workshop, that part of capital which would have to be so applied by the entire class of industrial capitalists is concentrated in the hands of a few merchants, who in carrying out the functions of circulation also provide for the growing expenses incidental to their continuation.
To industrial capital the costs of circulation appear as unproductive expenses, and so they are. To the merchant they appear as a source of his profit, proportional, given the general rate of profit, to their size. The outlay to be made for these circulation costs is, therefore, a productive investment for mercantile capital. And for this reason, the commercial labour which it buys is likewise immediately productive for it.

1 John Bellers [Essays about the Poor, Manufactures, Trade, Plantations, and Immorality, London, 1699, p. 10. – Ed.].
2 How well this forecast of the fate of the commercial proletariat, written in 1865, has stood the test of time can be corroborated by hundreds of German clerks, who are trained in all commercial operations and acquainted with three or four languages, and offer their services in vain in London City at 25 shillings per week, which is far below the wages of a good machinist. A blank of two pages in the manuscript indicates that this point was to have been treated at greater length. For the rest, we refer the reader to Book II (Kap. VI.) (“The Costs of Circulation”) [English edition: Vol. II, Ch. VI. – Ed.], where various matters belonging under this head have already been discussed. – F.E.

Chapter 19. Money-Dealing Capital

The purely technical movements performed by money in the circulation process of industrial, and, as we may now add, of commercial capital (since it takes over a part of the circulation movement of industrial capital as its own, peculiar movement), if individualised as a function of some particular capital performing just these, and only these, operations as its specific operations, convert this capital into money-dealing capital. A portion of industrial capital, and, more precisely, also of commercial capital, not only obtains all the time in the form of money, as money-capital in general, but as money-capital engaged precisely in these technical functions. A definite part of the total capital dissociates itself from the rest and stands apart in the form of money-capital, whose capitalist function consists exclusively in performing these operations for the entire class of industrial and commercial capitalists. As in the case of commercial capital, a portion of industrial capital engaged in the circulation process in the form of money-capital separates from the rest and performs these operations of the reproduction process for all the other capital. The movements of this money-capital are, therefore, once more merely movements of an individualised part of industrial capital engaged in the reproduction process.
It is only when, and in so far as, capital is newly invested – which also applies to accumulation – that capital in money-form appears as the starting-point and the end result of the movement. But for all capitals already engaged in the process, these first and last points appear merely as points of transit. Since, as already seen in the case of simple commodity-circulation, from the moment of leaving the sphere of production to the moment of its re-entry industrial capital undergoes the metamorphosis C' – M – C, M in fact represents the end result of one phase of the metamorphosis, just to become the starting-point of the reverse phase, which supplements it. And although the C – M of industrial capital is always M – C – M for merchant's capital, the actual process for the latter is continually also C – M – C once it has begun to function. But it performs the acts C – M and M – C simultaneously. This is to say that there is not just one capital in the stage C – M while another is in the stage M – C, but that the same capital buys continually and sells continually at one and the same time because of the continuity of the production process. It is to be found always in both stages at one and the same time. While one of its parts turns into money, later to be reconverted into commodities, another turns simultaneously into commodities, to be reconverted into money.
It all depends on the form of the commodity exchange whether the money serves here as a means of circulation or of payment. In both cases the capitalist has to pay out money constantly to many persons, and to receive money continually from many persons. This purely technical operation of disbursing and receiving money is in itself labour which, as long as the money serves as a means of payment, necessitates drawing up payment balances and acts of balancing accounts. This labour is a cost of circulation, i.e., not labour creating value. It is shortened in being carried out by a special section of agents, or capitalists, for the rest of the capitalist class.
A definite portion of the capital must be on hand constantly as a hoard, as potential money-capital – a reserve of means of purchase, a reserve of means of payment, and idle capital in the form of money waiting to be put to work. Another portion streams back continually in this form. Aside from collecting, paying, and book-keeping, this entails safekeeping the hoard, which is an operation all in itself. It is, indeed, a continuous conversion of the hoard into means of circulation and means of payment, and its restoration by means of money secured through sales and from payments due. This constant movement of the part of capital existing as money, dissociated from the function of capital itself, this purely technical function, causes its own labour and expense, classified as costs of circulation.
The division of labour brings it about that these technical operations, dependent upon the functions of capital, should be performed for the entire capitalist class as much as possible by a special section of agents or capitalists as their exclusive function – or that these operations should be concentrated in their hands. We have here, as in merchant's capital, division of labour in a twofold sense. It becomes a specialised business, and because performed as a specialised business for the money-mechanism of the whole class, it is concentrated and conducted on a large scale. A further division of labour takes place within it, both through division into various independent branches, and through segmentation of work within these branches (large offices, numerous book-keepers and cashiers, and far-reaching division of labour). Paying and receiving money, settling accounts, keeping current accounts, storing money, etc. – all this, dissociated from the acts necessitating these technical operations, makes money-dealing capital of the capital advanced for these functions.
The various operations, whose individualisation into specific businesses gives rise to the money trade, spring from the different purposes of money itself and from its functions, which capital in its money-form must therefore likewise carry out.
I have pointed out earlier that finance developed originally from the exchange of products between different communities.1
Trading in money, commerce in the money-commodity, first developed therefore out of international commerce. Ever since different national coins have existed merchants buying in foreign countries have had to exchange their national coins for local coins, and vice versa, or to exchange different coins for uncoined pure silver or gold – the world-money. Hence the exchange business which is to be regarded as one of the natural foundations of modern finance.2 Out of it developed banks of exchange, in which silver (or gold) serves as world-money – now called bank money or commercial money – as distinct from currency. Exchange transactions, in the sense of mere notes of payment to travellers from a money-changer in one country to a changer in another country, developed back in Rome and Greece out of the actual money-changing.
Trading in gold and silver as commodities (raw materials for the making of luxury articles) is the natural basis of the bullion trade, or the trade which acts as a medium for the functions of money as universal money. These functions, as previously explained (Buch I, Kap. III, 3, c [ English edition: Ch. III, 3, c. – Ed.]), are two-fold: currency movement back and forth between the various national spheres of circulation in order to balance international payments and in connection with the migrations of capital in quest of interest; simultaneously, flow of precious metals from their sources of production via the world-market and their distribution among the various national spheres of circulation. Goldsmiths acted as bankers still during the greater part of the 17th century in England. We shall completely disregard the way in which the balancing of international accounts developed further in the bill jobbing, etc., and everything referring to transactions in valuable papers; in short, we shall leave out of consideration all special forms of the credit system, which do not as yet concern us here.
National money discards its local character in the capacity of universal money; one national currency is expressed in another, and thus all of them are finally reduced to their content of gold or silver, while the latter, being the two commodities circulating as world-money, are simultaneously reduced to their reciprocal value-ratio, which changes continually. It is this intermediate operation which the money trader makes his special occupation. Money-changing and the bullion trade are thus the original forms of the money trade, and spring from the two-fold functions of money – as national money and world-money.
The capitalist process of production, just as commerce in general, even under pre-capitalist methods, imply:
First, the accumulation of money as a hoard, i.e., here as that part of capital which must always be on hand in the form of money as a reserve fund of means of payment and purchase. This is the first form of a hoard, as it reappears under the capitalist mode of production, and as it appears generally with the development of merchant's capital, at least for the purposes of this capital. Both remarks apply to national, as well as international, circulation. The hoard is in continuous flux, pours ceaselessly into circulation, and returns ceaselessly from it. The second form of a hoard is that of idle, temporarily unemployed capital in the shape of money, including newly accumulated and not yet invested money-capital. The functions entailed by this formation of a hoard are primarily those of safekeeping, bookkeeping, etc.
Secondly, however, this involves outlays of money for purchases, collecting money from sales, making and receiving payments, balancing payments, etc. The money-dealer performs all these services at first as a simple cashier of the merchants and industrial capitalists. 3
The money trade becomes fully developed, even in its first stages, as soon as its ordinary functions are supplemented by lending and borrowing and by credit. Of this more in the next part, which deals with interest-bearing capital.
The bullion trade itself, the transfer of gold or silver from one country to another, is merely the result of trading in commodities. It is determined by the rate of exchange which expresses the standing of international payments and the interest rates in the different markets. The bullion trader as such acts merely as an intermediary of the results.
In discussing money and the way its movements and forms develop out of simple commoditycirculation, we saw (Book 1 Ch. III) that the movements of the mass of money circulating as means of purchase and payment depend on the metamorphosis of commodities, on the volume and velocity of this metamorphosis, which we now know to be but a phase in the entire process of reproduction. As for securing the money materials – gold and silver – from their sources of production, this resolves itself into a direct exchange of commodities, an exchange of gold and silver as commodities for other commodities. Hence, it is itself as much a phase of the exchange of commodities as the securing of iron or other metals. However, so far as the movement of precious metals on the world-market is concerned (we here leave aside movements expressing the transfer of capital by loans – a type of transfer which also obtains in the shape of commoditycapital), it is quite as much determined by the international exchange of commodities as the movement of money as a national means of purchase and payment is determined by the exchange of commodities in the home market. The inflow and outflow of precious metals from one national sphere of circulation to another, inasmuch as this is caused merely by a depreciation of the national currency, or by a double standard, are alien to money circulation as such and merely represent corrections of deviations brought about arbitrarily by state decrees. Finally, as concerns the formations of hoards which constitute reserve funds for means of purchase and payment, be it for home or foreign trade, and which also merely represent a form of temporarily idle capital, they are in both cases necessary precipitates of the circulation process.
If the entire circulation of money is in volume, form and movement purely a result of commoditycirculation, which, in its turn, from the capitalist point of view, is only the circulation process of capital (also embracing the exchange of capital for revenue, and of revenue for revenue, so far as outlay of revenue is effected through retail trade), it is self-evident that dealing in money does not merely promote the circulation of money, a mere result and phenomenon of commoditycirculation. This circulation of money itself, a phase in commodity-circulation, is taken for granted in money-dealing. What the latter promotes is merely the technical operations of money circulation which it concentrates, shortens, and simplifies. Dealing in money does not form the hoards. It provides the technical means by which the formation of hoards may, so far as it is voluntary (hence, not an expression of unemployed capital or of disturbances in the reproduction process), be reduced to its economic minimum because, if managed for the capitalist class as a whole, the reserve funds of means of purchase and payment need not be as large as they would have to be if each capitalist were to manage his own. The money-dealers do not buy the precious metals. They merely handle their distribution as soon as the commodity trade has bought them.
They facilitate the settling of balances, inasmuch as money serves as the means of payment, and reduce through the artificial mechanism of these settlements the amount of money required for this purpose. But they do not determine either the connections, or the volume, of the mutual payments. The bills of exchange and the cheques, for instance, which are exchanged for one another in banks and clearing houses, represent quite independent transactions and are the results of given operations, and it is merely a question of a better technical settlement of these results. So far as money circulates as a means of purchase, the volume and number of purchases and sales have no connection whatever with money-dealing. The latter can do no more than shorten the technical operations that go with buying and selling, and thus reduce the amount of cash money required to turn over the commodities.
Money-dealing in its pure form, which we consider here, i.e., set apart from the credit system, is thus concerned only with the technique of a certain phase of commodity-circulation, namely, that of money circulation and the different functions of money arising in its circulation.
This substantially distinguishes dealing in money from the dealing in commodities, which promotes the metamorphosis of commodities and their exchange, or even gives this process of the commodity-capital the appearance of a process of a capital set apart from industrial capital. While, therefore, commercial capital has its own form of circulation, M – C – M, in which the commodity changes hands twice and thus provides a reflux of money, as distinct from C – M – C, in which money changes hands twice and thus promotes commodity exchange, there is no such special form in the case of money-dealing capital.
In so far as money-capital is advanced by a separate class of capitalists in this technical promotion of money circulation – a capital which on a reduced scale represents the additional capital the merchants and industrial capitalists would otherwise have to advance themselves for these purposes – the general form of capital, M – M', occurs here as well. By advancing M, the advancing capitalist secures M + ΔM. But promotion of M – M' does not here concern the material, but only the technical, processes of the metamorphosis.
It is evident that the mass of money-capital with which the money-dealers operate is the moneycapital of merchants and industrial capitalists in the process of circulation, and that the moneydealers' operations are actually operations of merchants and industrial capitalists, in which they act as middlemen.
It is equally evident that the money-dealers' profit is nothing but a deduction from the surplusvalue, since they operate with already realised values (even when realised in the form of creditors' claims).
Just as in the commodity trade, there is a duplication of functions, because a part of the technical operations connected with money circulation must be carried out by the dealers and producers of commodities themselves.

1 Zur Kritik der politischen Oekonomie, S. 27.
2 “The great differences among coins as concerns their grain and coinage by many princes and towns that were privileged to coin money, necessitated the creation of business establishments to enable merchants to use local money wherever compensation for the different coins was required. To be able to make cash payments, merchants who travelled to a foreign market provided themselves with uncoined pure silver, or gold. In the same way they exchanged money received in local markets for uncoined silver or gold when returning home. The business of exchanging money, the exchange of uncoined precious metals for local coins, and vice versa, thus became a widespread and paying business.” (Hüllmann, Städtewesen des Mittelalters. Bonn, 1826-29, I, S. 437-38.) “Banks of exchange do not owe their name to the fact that they issue bills of exchange... but to the fact that they used to exchange coins. Long before the establishment of the Amsterdam Bank of Exchange in 1609, there existed in the Dutch merchant towns money-changers and exchange houses, even exchange banks ... The business of these money-changers consisted in exchanging the numerous varieties of coin brought into the country by foreign traders for the currency of the realm. Gradually their circle of activity extended ... They became the bankers and cashiers of their times. But the government of Amsterdam viewed as dangerous the combination of cashier and exchange businesses, and to meet this danger it was resolved to establish a large chartered institution able to perform both the cashier and exchange operations. This institution was the famous Amsterdam Bank of Exchange of 1609. In like manner, the exchange banks of Venice, Genoa, Stockholm, Hamburg, owe their origin to the continual necessity of changing money. Of all these, the Hamburg Exchange is the only one today still doing business, because the need for such an institution is still felt in that merchants' town, which has no Mint of its own, etc.” (S. Vissering, Handboek van Praktische Staathuishoudkunde, Amsterdam, 1860-61, I, 247-48.)
3 “The institution of cashier has probably nowhere preserved its original independent character so pure as in the Dutch merchant towns” (cf. on the origin of the cashier business in Amsterdam. E. Lusac, Holland's Rykdom, Part III). “Its functions coincide in part with those of the old Amsterdam Bank of Exchange. The cashier receives from the merchants, who employ his services, a certain amount of money, for which he opens a 'credit' for them in his books. Later, they send him their claims, which he collects for them and credits to their account. At the same time, he makes payments on their drafts (kassiers briefes) and charges the amounts to their account. He makes a small charge for these receipts and payments, which yields him a remuneration for his labours only corresponding to the size of the turnover accomplished between the two parties. If payments are to be balanced between two merchants, who both deal with the same cashier, such payments are settled very simply by mutual entries in the books, for the cashiers balance their mutual claims from day to day. The cashier's actual business thus consists basically of this mediation in payments. Therefore, it excludes industrial enterprises, speculation, and opening of unlimited credits; for it must be the rule in this business that the cashier makes no payment over and above the credit of any one keeping an account with him.” (Vissering, loc. cit., p. 434.) Re the banking associations of Venice: “The requirements and locality of Venice, where carrying bullion was less convenient than in other places, induced the large merchants of that city to found banking associations under due safeguards, supervision and management. Members of such associations deposited certain sums, on which they drew drafts for their creditors, whereupon the paid sum was deducted from the debtor's account on the page of the book reserved for that purpose and added to the sum credited in the same book to the creditor. This is the earliest beginning of the so-called giro banks. These associations are indeed old. But if attributed to the 12th century, they are being confounded with the State Loan Institute established in 1171.” (Hüllmann, Loc. cit., pp. 453-54.)