How Fast Money Circulates

Key Takeaways

1. 1Velocity equals total transactions divided by money supply — how many times the average dollar gets spent in a year
2. 2MV = PQ is the foundational identity: money supply times velocity equals price level times quantity of goods produced
3. 3Modern economies typically run a velocity of 4–10 — the average dollar changes hands four to ten times annually
4. 4Recessions involve velocity crashes — people hoard cash, lending freezes, the same money supply produces fewer transactions
5. 5Inflation depends on both money growth and velocity growth — printing money alone doesn't cause it if velocity falls
6. 6Central banks can't directly control velocity — they manage money supply and interest rates, but velocity emerges from collective behavior
7. 7Low velocity is a warning signal — even if money supply looks healthy, weak circulation indicates economic weakness
8. 82020–2021 was a textbook velocity story: pandemic hoarding crashed velocity, reopening surged it, and combined with money growth produced the inflation wave