US Macro

M2 Money Supply

M2 is the broad measure of money in the US economy — currency in circulation plus checking accounts plus savings deposits plus money market mutual funds plus small time deposits. Once central to monetarist economic theory, M2 fell out of mainstream policy use for decades. The 2020-2022 surge from $15T to $21T and the subsequent inflation episode put M2 back into macro conversation.

May 14, 2026M2SLmonetary-aggregates · us-macro · monetarism · inflation

—

The most contested macro indicator in modern economics. M2 was central to monetary-policy thinking for most of the 20th century, then dismissed as outdated for thirty years, then violently rehabilitated when the 2020-2022 episode appeared to confirm the relationship between money supply growth and inflation that monetarists had been arguing for. As of 2025, M2 remains in a strange in-between state — analytically interesting, politically loaded, but not formally targeted by any major central bank.

—

What it measures

M2 is a broad monetary aggregate published weekly by the Federal Reserve as part of its H.6 statistical release:

The series we track — FRED M2SL — is seasonally adjusted M2 in billions of US dollars, published monthly. The pre-COVID baseline was around $15 trillion; the peak (April 2022) was $21.7 trillion; current levels (mid-2025) are around $22 trillion after some retracement and recent re-acceleration.

The Fed deliberately stopped publishing M3 (an even broader aggregate including large time deposits and institutional money market funds) in 2006, arguing it didn't add useful information. M1 (the narrower aggregate) is still published. M2 sits as the practical "broad money" measure for the US economy.

Why it matters

Two angles.

The historical-monetary-policy-anchor angle. From the 1950s through the 1990s, M2 (or its predecessors) was a primary input to Fed policy decisions. Paul Volcker's 1979-1981 anti-inflation campaign explicitly targeted monetary aggregate growth rates. The Fed's policy framework included specific M2 growth targets ("the M2 corridor"). Through the 1990s, this approach was gradually abandoned as the empirical link between M2 and inflation appeared to weaken; central banks shifted to interest-rate-targeting frameworks. M2 remains in the policy backdrop and gets cited heavily during inflation episodes, but it's not the dominant decision input it once was.

The asset-allocation-and-inflation-hedge angle. Private investors and asset allocators use M2 differently than central banks. Aggressive M2 growth — especially relative to underlying real GDP growth — is treated by many investors as a signal to favor "real assets" (gold, real estate, commodities) over financial assets (cash, fixed-income). The 2020-2022 episode produced major asset-allocation shifts as M2 surged: gold rallied substantially, real estate prices rose, commodity-linked equities outperformed. Whether these reactions were correct or overdone is debated, but M2 functions as a coordination point for the segment of investor base concerned about fiat-currency debasement.

What moves it, and what it moves

Moves M2:

Fiscal policy. Direct stimulus payments and forgivable loan programs (CARES Act, PPP, ARP) directly add money to household and business deposit accounts. The 2020-2022 surge was substantially fiscal-policy driven.
Fed balance sheet operations (QE and QT). Quantitative easing expands bank reserves, which indirectly drives deposit growth (banks lend reserves, deposits expand in the banking system). QT does the reverse.
Bank lending behavior. When banks expand credit (loans), they create deposits. When credit growth slows, deposit growth slows too.
Household behavior. Spending decisions affect how money flows through M2 components (savings → checking → spending → outflow from the household sector).

M2 moves:

Inflation expectations (with 12-18 month lag, historically).
Gold prices (often used as inflation hedge during M2 surges).
Bond yields (longer-term yields embed inflation expectations).
The US dollar (large M2 growth tends to weaken DXY relative to currencies with tighter monetary aggregates).
Cryptocurrency (Bitcoin and gold often correlate with M2 growth as fiat-currency-debasement narratives).

A worked example: the 2020-2022 M2 surge and 2022 inflation

US M2 was approximately $15.4 trillion in February 2020 — the pre-COVID baseline. Through the next 18 months:

March 2020: Fed cuts to 0%, announces unlimited QE; CARES Act passes ($2.2T fiscal package); M2 jumps to $16.6T (+8% MoM)
April-December 2020: continuing fiscal support, ongoing QE, household savings rise dramatically; M2 reaches $19.1T (+24% YoY)
January-December 2021: American Rescue Plan adds another $1.9T; M2 continues growing; reaches $21.4T (+12% YoY)
April 2022 peak: M2 reaches $21.7 trillion — approximately +40% from the February 2020 baseline over 26 months

This was the largest sustained M2 expansion in modern US history. By comparison, the 2009-2015 QE era produced M2 growth of approximately 6-8% annualized; the 2020-2022 period saw 12-15% annualized growth at the peak.

The inflation response:

2020: CPI YoY mostly 1-2%, suppressed by demand collapse
2021 first half: CPI YoY rising — 2% in February, 4% in April, 5% in May (the "transitory" framing was beginning to break)
2022 first half: CPI YoY accelerating — 7.9% in February, 8.5% in March, 9.1% in June 2022 (the peak)
2023-2024: Inflation declining as the M2 surge fades, supply chains normalize, and Fed tightening transmits

The 12-18 month lag between the start of the M2 surge (March 2020) and the inflation peak (June 2022) is consistent with the historical monetarist prediction. Whether this episode validates monetarism more broadly — or whether it was specifically a consequence of supply-chain disruptions, energy shocks, fiscal-monetary coordination, and demand pull-forward effects — remains a live academic debate. The episode at minimum showed that when M2 surges by 40% in two years, expecting price stability is unrealistic.

M2 has since plateaued and modestly declined. As of mid-2025, M2 is around $22.0-22.4 trillion, with growth essentially flat or slightly negative — the first sustained period of non-growth in M2 in decades, driven by Fed QT and reduced banking-system credit growth.

The current cycle, and the open question

The structural debate:

Will M2 monetarism return as a forecasting tool? The 2020-2022 episode demonstrated that very large M2 swings do correlate with inflation outcomes (with 12-18 month lag). Whether smaller, more typical M2 fluctuations carry useful signal is harder to establish.
Velocity dynamics. Modern monetary economics emphasizes velocity alongside M2 levels. Post-COVID velocity has been recovering (after collapsing in the QE era), but estimates vary widely. A sustained velocity rebound combined with stable M2 would be inflationary; a velocity collapse would be disinflationary.
Crypto / non-bank money. As crypto market caps and stablecoin supplies grow, the question of whether traditional M2 captures "money" in the relevant economic sense is increasingly active. Some economists are pushing for "M2 + stablecoins" or "M2 + crypto" composite measures.
Fed balance sheet trajectory. QT continues, removing reserves from the banking system and (with various dynamics) slowing M2 growth. Any restart of QE would re-accelerate M2 and likely refresh monetarist concerns.

What you watch: M2 monthly print (FRED publishes by month 1-2 weeks after month-end); M2 growth YoY (the most meaningful rate measure); velocity of M2 (FRED publishes quarterly); Fed balance sheet (WALCL series, weekly); and the relationship between M2 growth and CPI YoY — looking for any breakdown or reaffirmation of the 12-18 month lag relationship.

FAQ

What's actually included in M2?

Four main components, in increasing order of liquidity-loss: (1) M1 — currency in circulation plus checking accounts plus traveler's checks; (2) Savings deposits (passbook savings, basic savings accounts); (3) Money market deposit accounts (interest-bearing accounts at banks); (4) Small-denomination time deposits (CDs under $100,000) and retail money market mutual funds. The Federal Reserve's H.6 release publishes M2 weekly with this breakdown. Note: cryptocurrency, equity holdings, gold, real estate, and corporate bonds are NOT in M2 — they're stores of value but not 'money' in the monetary-aggregate sense. The exclusion of cryptocurrency has been increasingly debated as crypto market caps grew.

Why did M2 get so much attention in 2020-2022?

Because it surged 40% in 18 months — from approximately $15.4 trillion in February 2020 to $21.7 trillion by April 2022. This was the largest M2 growth percentage in any 18-month period in modern US history. The drivers: pandemic-era fiscal stimulus (the various rounds of CARES Act, American Rescue Plan, etc., totaling roughly $5 trillion of direct payments and forgivable loans to households and businesses), Fed quantitative easing (which expanded reserves and indirectly drove deposit growth), and household behavior (precautionary saving + reduced spending opportunities during lockdowns piled up in checking and savings accounts). The subsequent inflation peak — CPI YoY of 9.1% in June 2022 — happened with a lag of approximately 12-18 months after the M2 surge, reviving monetarist arguments about money-supply-driven inflation.

What is monetarism and is it still credible?

Monetarism is the economic doctrine — most associated with Milton Friedman — that inflation is fundamentally a monetary phenomenon caused by excess growth in the money supply. The famous Friedman quote: 'Inflation is always and everywhere a monetary phenomenon.' During the 1970s-1980s, monetarism dominated Fed policy thinking; Paul Volcker's anti-inflation campaign explicitly targeted M2 growth rates. In the 1990s-2010s, monetarism fell out of mainstream macroeconomic practice — the link between M2 and inflation broke down empirically (large M2 increases didn't produce inflation in the QE era of 2009-2019), and central banks shifted to interest-rate-targeting rather than money-supply targeting. The 2020-2022 episode partially rehabilitated monetarism in academic and political discussion: the M2 surge DID precede the inflation surge with the lag Friedman would have predicted. Whether this represents a genuine return of monetarist insights or a coincidence remains debated.

What's 'velocity of money' and why does it matter?

The equation MV = PQ (the equation of exchange) states that the money supply (M) times the velocity at which it changes hands (V) equals the price level (P) times real output (Q). Velocity is essentially how many times each dollar gets spent in a given period. The relationship is mathematically true by definition. The practical implication: M2 growth could either translate to inflation (if velocity is stable) or be absorbed by falling velocity (if money sits in bank deposits and doesn't get spent). The 2009-2019 period saw massive M2 growth alongside falling velocity — money piled up at banks and in reserve accounts but didn't get aggressively spent, so inflation stayed low. The 2020-2022 period saw M2 growth + a rebound in velocity as economic activity normalized + supply disruptions all converging to produce inflation. So pure-M2-growth tracking is unreliable; you need to consider velocity dynamics alongside.

Why does the Fed publish M2 if it doesn't target money supply anymore?

Three reasons. (1) Statutory requirement — the Federal Reserve Reform Act of 1977 requires regular publication of monetary aggregates. (2) Analytical value — even if M2 isn't the Fed's policy target, it's a useful indicator of financial conditions, banking system health, and household behavior. (3) International coordination — other central banks (ECB, BOJ) publish similar aggregates and the Fed maintains consistent methodology for comparison. The Fed actually stopped publishing M3 (a broader aggregate including large time deposits and institutional money market funds) in 2006, arguing it didn't provide useful signal. M2 remains the headline monetary aggregate the Fed reports, weekly via the H.6 release. The Fed's policy decisions are now driven primarily by inflation, employment, and financial stability indicators — M2 is one input among many, not the dominant signal.