Editing Money supply (section)

===Europe===
====Eurozone====
[[File:Money supply Euro.png|thumb|The [[euro]] money supplies M0, M1, M2 and M3, and euro zone GDP from 1980–2021. Logarithmic scale.]]

The [[European Central Bank]]'s definition of euro area monetary aggregates:<ref>{{cite web |url=http://www.ecb.int/stats/money/aggregates/aggr/html/hist.en.html |title=Monetary aggregates |publisher=European Central Bank |access-date=November 20, 2016}}</ref>
* '''M1''': Currency in circulation plus overnight deposits
* '''M2''': M1 plus deposits with an agreed maturity up to two years plus deposits redeemable at a period of notice up to three months.
* '''M3''': M2 plus repurchase agreements plus money market fund (MMF) shares/units, plus debt securities up to two years
====United Kingdom====
[[File:M4 money supply.svg|thumb|M4 money supply of the [[United Kingdom]] 1983–2024. In millions of [[Pound sterling|pounds sterling]].]]

There are just two official UK measures. M0 is referred to as the "wide [[monetary base]]" or "narrow money" and M4 is referred to as "[[broad money]]" or simply "the money supply".
* '''M0''': Notes and coin in circulation plus banks' reserve balance with [[Bank of England]]. (When the bank introduced Money Market Reform in May 2006, the bank ceased publication of M0 and instead began publishing series for reserve balances at the Bank of England to accompany notes and coin in circulation.<ref>{{cite web |url=https://www.bankofengland.co.uk/statistics/details/further-details-about-m0-data |publisher=Bank of England |title=Further details about M0 data |date=November 8, 2018}}</ref>)
* '''M4''': Cash outside banks (i.e. in circulation with the public and non-bank firms) plus private-sector retail bank and building society deposits plus private-sector wholesale bank and building society deposits and certificates of deposit.<ref>{{cite web |url=http://www.bankofengland.co.uk/mfsd/iadb/notesiadb/M4.htm |publisher=Bank of England |archive-url=https://web.archive.org/web/20070809085936/http://www.bankofengland.co.uk/mfsd/iadb/notesiadb/m4.htm |archive-date=August 9, 2007 |title=Explanatory Notes – M4 |access-date=August 13, 2007}}</ref> In 2010 the total money supply (M4) measure in the UK was £2.2 trillion while the actual notes and coins in circulation totalled only £47 billion, 2.1% of the actual money supply.<ref>{{cite book |last1=Lipsey |first1=Richard G. |last2=Chrystal |first2=K. Alec |date=2011 |title=Economics |edition=12th |publisher=Oxford University Press |page=455 |isbn=978-0199563388}}</ref>

There are several different definitions of money supply to reflect the differing stores of money. Owing to the nature of bank deposits, especially time-restricted savings account deposits, M4 represents the most [[Market liquidity|illiquid]] measure of money. M0, by contrast, is the most liquid measure of the money supply.