Money Facilitates Credit Transactions, Which Are the Exchange of Present Goods against Future Goods

The simple statement, that money is a commodity whose economic function is to facilitate the interchange of goods and services, does not satisfy those writers who are interested rather in the accumulation of material than in the increase of knowledge. Many investigators imagine that insufficient attention is devoted to the remarkable part played by money in economic life if it is merely credited with the function of being a medium of exchange; they do not think that due regard has been paid to the significance of money until they have enumerated half a dozen further “functions”—as if, in an economic order founded on the exchange of goods, there could be a more important function than that of the common medium of exchange.

After Menger’s review of the question, further discussion of the connection between the secondary functions of money and its basic function should be unnecessary. Nevertheless, certain tendencies in recent literature on money make it appear advisable to examine briefly these secondary functions—some of them are coordinated with the basic function by many writers—and to show once more that all of them can be deduced from the function of money as a common medium of exchange.

This applies in the first place to the function fulfilled by money in facilitating credit transactions. It is simplest to regard this as part of its function as medium of exchange. Credit transactions are in fact nothing but the exchange of present goods against future goods.

—Ludwig von Mises, The Theory of Money and Credit, trans. H. E. Batson (Indianapolis: Liberty Fund, 1981), 46-47.