Do Stablecoins Protect Against Inflation?
Short answer: no, and it was never meant to. A stablecoin does exactly what it says: it holds one dollar. What it cannot hold is what that dollar buys. Those are two different things, and the gap between them is inflation.
Stable against what?
Every peg needs a reference, and here the reference is the US dollar. That makes a stablecoin an excellent instrument for moving money, settling trades and sitting out a volatile weekend. It makes it a poor place to leave savings for years, because the measuring stick itself shrinks. Currency debasement is slow enough to feel like nothing and large enough to matter over a decade.
What it has cost, in numbers
The usual yardstick is CPI-U, the US consumer price index published by the Bureau of Labor Statistics. Measured to October 2026, a dollar held since January 2020 buys roughly 23% less than it did: you now need about $1.30 to buy what $1 bought then. A stablecoin held across those years tracked the dollar faithfully and lost exactly the same purchasing power: the peg held perfectly, and that was the problem.
You can run the figure for any starting month with the inflation calculator on our stablecoin tracker, which uses the published CPI-U series.
Doesn't yield fix it?
Sometimes, partly. Lending a stablecoin or holding a yield-bearing one can pay a rate above inflation in one year and below it in the next. What is always true is that the yield is not free: it comes from lending those dollars to someone, so you take that borrower's risk, the protocol's risk or the issuer's. A peg that holds and a yield that pays are two separate promises, and both have broken before: see the history of stablecoin depegs.
So what does hold purchasing power?
Historically, assets whose supply cannot be expanded at will: property, shares in real businesses, gold, and more recently bitcoin. They share an awkward property: none of them is stable. They have preserved purchasing power over long periods by being volatile over short ones, which is the trade nobody enjoys. None of this is advice, and past behaviour is not a promise.
| What it holds steady | What it does not | |
|---|---|---|
| Dollars in a bank | The number | What the number buys |
| Stablecoin | Its peg to the dollar | What the dollar buys |
| Scarce asset | Its supply | Its price, day to day |
Where unstablecoins come in
An unstablecoin takes the opposite position deliberately: no peg, no promise, and in some cases a fixed and shrinking supply. That is a statement about debasement, not a shelter from it. Volatile is not the same as protected, and an unstablecoin can lose more in a week than inflation takes in a decade. The honest version of the argument is narrower: one design hides its loss inside the unit of account, the other puts its risk in plain sight.
Compare the two designs in stablecoin vs unstablecoin, or see today's stablecoin rankings and the inflation calculator.
Stablecoin Watch →
Live market caps, peg status, depeg history and purchasing power lost to inflation for every major dollar stablecoin.