If you earn the same salary you earned two years ago, you took a pay cut. If you got a 3% raise last year, you probably still took a pay cut. The reason is a number the government publishes every week but never explains on your pay stub: the money supply.
The Federal Reserve's M2 money supply — the broadest measure of how many dollars exist — is currently growing at 3.9% per year. The government's official inflation measure, CPI, says prices are rising at 2.8%. Your raise needs to beat both numbers to mean anything. Most raises don't.
The raise that wasn't a raise
Let's say you earn $80,000 and got a 3% raise. That puts an extra $2,400 in your pocket before taxes. Sounds like progress. But the money supply grew 3.9%, meaning the purchasing power of every dollar you earn dropped by roughly that same amount. Your $2,400 raise was offset by approximately $3,120 in lost purchasing power. Net result: you're $720 behind where you started.
This isn't a rounding error. It's a compounding loss that accumulates every year your raise fails to outpace money creation. Over five years, a worker earning $80,000 with consistent 3% raises against 3.9% monetary expansion loses more than $4,000 in cumulative purchasing power — money that doesn't show up as a deduction on any pay stub.
Why CPI understates the problem
The Bureau of Labor Statistics publishes CPI as the "official" inflation rate. But CPI measures a curated basket of consumer goods using methodologies that have been revised repeatedly since the 1980s, including substitution adjustments (if steak gets expensive, CPI assumes you switch to chicken) and hedonic adjustments (if your laptop is faster, CPI says it costs "less" even if the price went up).
None of these adjustments change the fundamental reality: when the money supply grows faster than economic output, each dollar you hold buys less. M2 measures the cause. CPI tries to measure the effect. The cause is always faster.
The compounding problem
Purchasing power erosion isn't a one-time event. It compounds. If you lose 0.9% in real purchasing power this year and 0.9% next year, you haven't lost 1.8% — you've lost slightly more, because the second year's loss is applied to an already diminished base. Over a decade, these fractions compound into thousands of dollars that simply vanished from what your salary can buy.
The average American worker received a 4.1% raise in 2025. With M2 at 3.9%, that's a real gain of just 0.2%. One percentage point less and it would have been a pay cut. That's how thin the margin is.
What you can actually do about it
Step one is knowing the number. Most people don't. They feel that groceries cost more and rent is higher, but they can't point to the mechanism. The mechanism is M2 growth outpacing wages. Once you see it, you can't unsee it — and you can start making decisions with real data instead of feelings.
Use the Salary Purchasing Power Calculator to see exactly what your specific salary is worth after M2 erosion. Two numbers, ten seconds, and you'll know whether your last raise was actually a raise — or a pay cut in disguise.