Let's consider an example of how business would be transacted in the new system. There are two possibilities, depending on whether the mutual credit is based upon whether the creditor can provide collateral or not. we will take the case with collateral first.

Suppose that A, an organic farmer, pledges as collateral a certain plot of land that she owns and on which she wishes to build a house. The land is valued at, say, $40,000 in the capitalist market. By pledging the land, A is able to open a credit account at the clearinghouse for, say, $30,000 in mutual money (a ratio of 3/4). She does so knowing that there are many other members of the system who are carpenters, electricians, plumbers, hardware dealers, and so on who are willing to accept mutual dollars in payment for their products or services.

It's easy to see why other subscriber-members, who have also obtained mutual credit and are therefore in debt to the clearinghouse for mutual dollars, would be willing to accept such dollars in return for their goods and services. For they need to collect mutual dollars to repay their debts. But why would someone who is not in debt for mutual dollars be willing to accept them as money?

To see why, let's suppose that B, an underemployed carpenter, currently has no account at the clearinghouse but that he knows about the clearinghouse and the people who operate it. After examining its list of members and becoming familiar with the policies of the new organisation, he's convinced that it does not extend credit frivolously to untrustworthy recipients who are likely to default. He also knows that if he contracts to do the carpentry on A's new house and agrees to be paid for his work in mutual money, he'll then be able to use it to buy groceries, clothes, car repairs, and other goods and services from various people in the community who already belong to the system.

Thus B will be willing, and perhaps even eager (especially if the economy is in recession and regular money is tight) to work for A and receive payment in mutual dollars. For he knows that if he is paid, say, $8,000 in mutual money for his labour on A's house, this payment constitutes, in effect, 20 percent of a mortgage on her land, the value of which is represented by her mutual credit. B also understands that A has promised to repay this mortgage by producing new value — that is, by growing organic fruits and vegetables and selling them for mutual dollars to other members of the system — and that it is this promise to produce new wealth which gives her mutual credit its value as a medium of exchange.

To put this point slightly differently, A's mutual credit can be thought of as a lien against goods or services which she has guaranteed to create in the future. As security of this guarantee, she agrees that if she is unable for some reason to fulfil her obligation, the land she has pledged will be sold for mutual dollars to other members. In this way, a value sufficient to cancel her debt (and probably then some) will be returned to the system. This provision insures that the clearinghouse is able to balance its books and gives members confidence that mutual money is sound.

It should be noticed that since new wealth is continually being created, the basis for new mutual credit is also being created at the same time. Thus, suppose that after A's new house has been built, her daughter, C, along with a group of friends D, E, F, . . . , decide that they want to start a collectively owned and operated organic restaurant (which will incidentally benefit A, as an outlet for her produce), but that C and her friends do not have enough collateral to obtain a start-up loan. A, however, is willing to co-sign a note for them, pledging her new house (valued at say, $80,000) as security. On this basis, C and her partners are able to obtain $60,000 worth of mutual credit, which they then use to buy equipment, supplies, furniture, advertising, etc. and lease the building necessary to start their restaurant.

This example illustrates one way in which people without property are able to obtain credit in the new system. Another way — for those who cannot find (or perhaps don't wish to ask) someone with property to co-sign for them — is to make a down payment and then use the property which is to be purchased on credit as security, as in the current method of obtaining a home or auto loan. With mutual credit, however, this form of financing can be used to purchase anything, including capital goods.

Which brings us to the case of an individual without means for providing collateral - say, for example A, the organic farmer, does not own the land she works. In such a case, A, who still desires work done, would contact other members of the mutual bank with the skills she requires. Those members with the appropriate skills and who agree to work with her commit themselves to do the required tasks. In return, A gives them a check in mutual dollars which is credited to their account and deducted from hers. She does not pay interest on this issue of credit and the sum only represents her willingness to do some work for other members of the bank at some future date.

The mutual bank does not have to worry about the negative balance, as this does not create a loss within the group as the minuses which have been incurred have already created wealth (pluses) within the system and it stays there. It is likely, of course, that the mutual bank would agree an upper limit on negative balances and require some form of collateral for credit greater than this limit, but for most exchanges this would be unlikely to be relevant.

It is important to remember that mutual dollars have no intrinsic value, since they can't be redeemed (at the mutual bank) in gold or anything else. All they are promises of future labour. Thus, as Greene points out in his work on mutual banking, mutual dollars are "a mere medium for the facilitation of barter." In this respect they are closely akin to the so-called "barter dollars" now being circulated by barter associations through the use of checks and barter cards. To be precise, then, we should refer to the units of mutual money as "mutual barter dollars." But whereas ordinary barter dollars are created at the same time that a barter transaction occurs and are used to record the values exchanged in that transaction, mutual barter dollars are created before any actual barter transaction occurs and are intended to facilitate future barter transactions. This fact is important because it can be used as the basis for a legal argument that clearinghouses are essentially barter associations rather than banks, thrifts, or credit unions, and therefore should not be subject to the laws governing the latter institutions.