Money is created by the banking system issuing liabilities against itself. Under a fiat money system, nothing of intrinsic value backs the money supply. Viability of the system depends on shared faith. Central banks issue liabilities in the form of currency and deposits held by commercial banks in exchange for acquiring assets in the form of domestic government securities, foreign securities, or loans to commercial banks. These central bank liabilities constitute the monetary base. Commercial banks issue liabilities in the form of demand deposits held by the public in exchange for making loans. Commercial banks are constrained in money creation by the need to hold reserves with the central bank at a required ratio relative to demand deposits. The central bank must manage growth in the monetary base to maintain economic balance: too slow keeps the economy from performing at its potential while too fast causes inflation to rear up. To keep the economy on an even course, the monetarist school, led by Milton Friedman, advocates steady growth in the money supply. A pattern of inflation falling with slowing money growth shows up for Emerging East Asia between the 1990s and the 2000s.

Describes the institutional framework of reserves management, including reserve requirements, sources of bank reserves, the inter-bank Federal funds market, the management of aggregate reserves by Federal Reserve officials, and the limits to reserves management that resulted from wartime and postwar controls on interest rates.