Tuesday, August 14, 2007

Role in the money supply

A bank raises funds by attracting deposits, borrowing money in the inter-bank market, or issuing financial instruments in the money market or a capital market. The bank then lends out most of these funds to borrowers.

However, it would not be prudent for a bank to lend out all of its balance sheet. It must keep a certain proportion of its funds in reserve so that it can repay depositors who withdraw their deposits. Bank reserves are typically kept in the form of a deposit with a central bank. This behaviour is called fractional-reserve banking and it is a central issue of monetary policy. Note that under Basel I (and the new round of Basel II), banks no longer keep deposits with central banks, but must maintain defined capital ratios

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