M3 money supply explained: broad money aggregate definition

By Ken Chigbo, Founder, KenMacro. Published 2026-05-13.

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What is M3 money supply?

M3 money supply is a broad measure of money in circulation within an economy. It builds on M2 by adding instruments that are less liquid than retail deposits but still function as near-money for institutions. The typical M3 basket covers physical currency, chequeable and demand deposits, savings and small time deposits, retail money market funds, large time deposits above the retail threshold, institutional money market funds and short-term repurchase agreements. The European Central Bank publishes M3 monthly as its headline monetary aggregate, while the Federal Reserve discontinued official M3 reporting in 2006 and now relies on M2 and reserve balances.

How traders use M3 money supply

Macro traders use M3 to read the liquidity backdrop behind currency strength, bond yields and risk assets. In the euro area, the ECB releases monetary aggregates around the end of each month, and the desk treats sustained M3 growth above the ECB’s historical reference values as a signal of looser financial conditions that can weigh on EUR over longer horizons. Persistent contraction in M3, as seen during sharp tightening cycles, tends to precede slowdowns in credit, inflation and growth, which feeds into rate expectations and yield curve pricing. Retail traders typically pair M3 readings with credit impulse data, bank lending surveys and HICP releases rather than trading the print directly, because the data is lagging and rarely moves intraday spot meaningfully.

Common misconceptions about M3 money supply

The first misconception is that M3 measures printed money. It does not. The bulk of M3 is commercial bank deposits created through lending, not central bank base money. The second is that rising M3 mechanically causes inflation. The link runs through velocity, credit demand and capacity utilisation, and decades of euro area data show the relationship is unstable at short horizons. The third is that the US still publishes M3. The Federal Reserve stopped official M3 reporting in March 2006, citing limited additional information beyond M2. Private analysts reconstruct US M3 estimates, but these are not official Fed series.

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Frequently asked

What is the difference between M2 and M3 money supply?

M2 covers cash, demand deposits, savings deposits, small time deposits below the retail threshold and retail money market funds. M3 adds larger and less liquid instruments held mainly by institutions, including large time deposits, institutional money market funds and short-term repurchase agreements. M3 is therefore the broader aggregate and captures wholesale funding activity that M2 misses, which matters for assessing bank balance sheet liquidity.

Why did the Federal Reserve stop publishing M3?

The Fed discontinued M3 in March 2006, stating that the components added to M2 to construct M3 had not provided useful additional information about economic activity for many years and that collection costs were no longer justified. The decision was controversial among some analysts who viewed M3 as a useful liquidity gauge. The Fed still publishes the underlying institutional money fund and large time deposit data, allowing private reconstructions.

Does M3 money supply affect forex markets?

M3 influences FX indirectly rather than on the release itself. Sustained divergence in M3 growth between two currency areas signals different liquidity and credit conditions, which feeds into relative inflation, policy rate expectations and real yield differentials. The desk watches euro area M3 trends alongside ECB communication, because shifts in monetary growth can foreshadow changes in the ECB’s policy stance over multi-month horizons.

How often is M3 published?

The European Central Bank publishes euro area M3 monthly, typically around the end of the month following the reference period, alongside detailed counterparts including credit to households and non-financial corporations. Other central banks that still publish M3, including the Bank of England’s equivalent measures and several Asian central banks, also report monthly. Release calendars are listed on each central bank’s statistics page.

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