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What is 'M1'

M1 is the money supply that includes physical currency and coin, demand deposits, travelers checks, other checkable deposits and negotiable order of withdrawal (NOW) accounts. The most liquid portions of the money supply are measured by M1 because it contains currency and assets that can be quickly converted to cash. "Near money" and "near, near money," which fall under M2 and M3, cannot be converted to currency as quickly.

BREAKING DOWN 'M1'

Using M1 as the definition of a country’s money supply references money as a medium of exchange, with demand deposits and checking accounts the most commonly used exchange mediums following the development of debit cards and ATMs. Of all the components of the money supply, M1 is defined the most narrowly. It does not include financial assets like savings accounts. It is the money supply metric most frequently utilized by economists to reference how much money is in circulation in a country.

Money Supply and M1 in the United States

Up until March 2006, the Federal Reserve published reports on three money aggregates: M1, M2 and M3. Since 2006, the Fed no longer publishes M3 data. M1 covers types of money commonly used for payment, which includes the most basic payment form, currency, which is also referred to as M0. Because M1 is so narrowly defined, very few components are classified as M1. The broader classification, M2, includes savings account deposits and various time deposits such as money market account deposits.

Specific Money Types Under M1

The most significant component portion of a nation’s money supply under M1 is composed of Federal Reserve notes — otherwise known as bills or paper money — and coins that are in circulation outside of the Federal Reserve Banks and the vaults of depository institutions. Traveler’s checks (of non-bank issuers), demand deposits and other checkable deposits (OCDs), including NOW accounts at depository institutions and credit union share draft accounts, are other significant components of M1.

For most central banks, M1 almost always includes money in circulation and readily cashable instruments. But there are slight variations on the definition across the world. For example, M1 in the eurozone also includes overnight deposits. In Australia, it includes current deposits from the private non-bank sector. The United Kingdom, however, does not have an M1 class of money supply, but only two measures of its money supply: M0 or the broad monetary base (cash outside the Bank of England) and M4 or broad money, also known as the money supply. 

Money Supply and the U.S. Economy

For periods of time, measurement of the money supply indicated a close relationship between money supply and some economic variables such as the gross domestic product (GDP), inflation and price levels. Economists such as Milton Friedman argued in support of the theory that the money supply is intertwined with all of these variables. However, in the past several decades, the relationship between measurements of the money supply and other primary economic variables has been uncertain at best. Thus, the significance of the money supply acting as a guide for the conduct of fiscal policy in the United States has substantially lessened.

What Is the Current Money Supply in the U.S.?

According to the Federal Reserve, the amount of M1 money supply in the United States dropped between January and February 2018 from $3.65 trillion to $3.61 trillion. The average of M1 totaled $944.24 billion from 1959 until 2018. It reached an all-time high in January 2018 of $3.65 trillion. The amount of M2, however, increased slightly during the same period from $13.83 trillion to $13.86 trillion.  

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