Various categories in measuring the overall value of the country’s money supply. In the United States, the formalized monetary aggregates and its measured contents are as follows:

M0 – Physical cash and coin M1 – All M0 plus demand deposits and traveler's checks M2 – All M1 plus savings deposits and money market shares

Also, there is an M3 aggregate that includes bigger, greater than $100,000, time deposits and institutional funds. This M3 measurement is no longer monitored by the Federal Reserve since 2006, although analysts still compute the figure broadly. The Fed employs these monetary aggregates to assess the impacts of open-market operations such as modifying discount rate or trading in Treasury securities.