This chapter presents the nature of money and the financing role played by transfers of different types of obligation. It considers the idea of money, which is central to a developed capitalist economy, thus becoming a universal means of exchange. Meanwhile, the conflicting needs of the parties can only be accommodated by the supplier transferring to a third party the right to receive payment from the customer, in return for an immediate cash payment. The chapter then enumerates the practice of assignment and negotiation as mechanisms of transferring obligations. It also discusses the classification of property, cryptocurrencies, and other digital assets.