US Money Supply (M2)
M2 is the broadest commonly tracked measure of money in the US economy. Its growth rate is closely watched as a leading indicator of inflation.
What Is M2?
M2 is a measure of the money supply that includes:
- M1 — physical currency, demand deposits (checking accounts), and other liquid deposits
- Savings accounts — money market accounts and savings deposits
- Small-denomination time deposits — CDs under $100,000
- Retail money market funds
M2 is the most-watched broad money measure because it captures money that's both immediately spendable and can quickly be made spendable — representing total spending firepower in the economy.
M2 and Inflation
Milton Friedman's famous dictum: "Inflation is always and everywhere a monetary phenomenon." The idea is that when the money supply grows faster than the real economy, there's more money chasing the same goods — and prices rise.
The COVID-era M2 explosion (up ~26% in 2020–2021) preceded the 2022 inflation spike by roughly 12–18 months, consistent with historical lags. The subsequent M2 contraction in 2022–2023 helped anchor inflation expectations even before it showed up in CPI data.
Historical M2 Growth Rate
| Period | M2 YoY Growth | Context |
|---|---|---|
| Early 2026 | ~+3.5% | Moderate growth, consistent with low inflation target |
| 2025 | ~+3.2% | Recovery from contraction period |
| 2023 | −4.7% | First sustained M2 decline since 1930s |
| 2022 | +2.4% | Rapid deceleration from 2021 peak |
| 2021 | +13% | Stimulus checks, low rates; inflation followed |
| 2020 | +26% | Largest peacetime money creation in US history |
| 2019 | +7% | Normal pre-pandemic growth |
| 2018 | +4% | Stable, near-trend growth |
Why M2 Contracted in 2022–2023
When the Fed raised interest rates aggressively in 2022, it also shrank its balance sheet through quantitative tightening (QT) — selling bonds and letting maturing securities roll off. This directly reduced the money supply. Meanwhile, higher rates attracted money into less-liquid instruments outside M2, further compressing the measure.
The 2023 M2 contraction of −4.7% was historically unusual — the last time M2 fell consistently was during the Great Depression. The key question was whether it would cause a recession (it didn't) or just slow inflation (it did).
M2 vs Inflation Lag
The historical lag between M2 growth and CPI inflation is typically 12–24 months. This is why the Fed can't simply look at today's CPI to set policy — they have to predict where inflation will be based on current monetary conditions.
With M2 now growing modestly (~3–4% annually), the monetary backdrop is broadly consistent with inflation staying near target over the medium term, absent new shocks.
Common Questions
What's the difference between M1 and M2?
M1 is the most liquid money — cash and checking accounts. M2 includes M1 plus savings accounts, small CDs, and retail money market funds. M2 is broader and more commonly used in monetary analysis.
Does high M2 growth always cause inflation?
Not always, and not immediately. If the money supply grows faster than the economy's productive capacity, inflation tends to follow — but with lags of 12–24 months. In 2020–2021, the M2 surge was partly offset by reduced velocity (people saving, not spending), which delayed but didn't prevent the subsequent inflation.
What is a "normal" M2 growth rate?
Historically, M2 has grown at roughly 5–7% annually in the US. Growth broadly in line with nominal GDP growth (~4–5%) is considered neutral — neither inflationary nor deflationary.