Narrow Money A category of money supply that includes all physical money like coins and currency along with demand deposits and other liquid assets held by the central bank. In the United States narrow money is classified as M1 (M0 + demand accounts), while in the U.K. M0 is referenced as narrow money. Investopedia Says: The name comes from the fact that M1/M0 are the narrowest or most restrictive ideas of money that are the basis for the medium of exchange within the economy. This category of money is considered to be the most readily available for transactions and commerce. Related Terms: M0 M1 M2 M3 Monetary Base Monetary Policy Money Supply NOW Account |