For example, a million U.S. dollars, made up solely of $ bills, would form a stack measuring approximately 43 inches or 109 centimeters in height and weighing 22 pounds or about 10 kilos. Consequently, currency is inconvenient to use, especially for those who seek to make large investments or payments. Second, currency is subject to theft, requiring a big investment in security and insurance. Third, recounting currency every time it is moved or transferred between people entails time and expense. Finally, currency is subject to degradation, accident, fire, counterfeiting, and other mishaps. Because currency is costly to invest in, then we could refine the proposition we stated earlier to say that a person would invest a dollar in an account or bond that promises to pay back less than a dollar so long as the person could not preserve more of his or her initial wealth by investing in currency, net of its costs. So one might suggest that it is the negative net return on currency that establishes the lower bound to interest rates – zero is only a rough approximation. This formulation is sharper, certainly, but it may also be too blunt for the following reason. Notice that the costs of handling currency vary by the size of the investment one is considering.
These questions of credit analysis and risk control are an integral part of the current work of the Basle Committee on credit risk management. The starting point for that work is a paper describing the framework for traditional credit risk management by banks. That framework can then be used to consider how changes in the financial markets affect the credit process. In addition to the issues I’ve described, this work will look at the impact of other developments such as credit risk models, credit derivatives and securitization. One goal of this work is to identify areas of risk management which are improving, and those which may need strengthening, especially potential problems in the internal controls that prevent and detect breakdowns in risk control. The second question, how the larger role of capital markets activities is affecting liquidity risk, also involves a reconsideration of the guidance the Basle Committee developed a decade ago. The recent market turmoil has been especially hard on emerging market banks which funded domestic currency assets with unhedged foreign currency liabilities. The liquidity risk of concentrations on the asset side of the balance sheet has a different significance when assets are sold not only to raise cash but also to conduct portfolio management, which assumes generally liquid markets. Moreover, we are seeing new liquidity needs arising from the changed funding practices of customers.