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Fractional-reserve banking is the system of banking under which banks that take deposits from the public keep only part of their deposit liabilities in liquid assets as a reserve, and lend a percentage to borrowers, thus increasing the money supply by the loaned amount. Bank reserves are held as cash in the bank or as balances in the bank's account at the central bank. Fractional-reserv

In economics, the monetary base (also base money, money base, high-powered money, reserve money, outside money, central bank money or, in the UK, narrow money) in a country is the total amount of money created by the central bank. This includes:

Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular country or socio-economic context. The primary functions which distinguish money are: medium of exchange, a unit of account, a store of value and sometimes, a standard of deferred payment.