What Is a Depeg and What Does It Mean for Your Stablecoins?

The entire promise of a stablecoin is in the name. One USDC should always be worth one dollar. That promise is what makes stablecoins usable as payment: you can accept them without worrying that your invoice loses a third of its value overnight. But that promise is not a law of nature. It is maintained by a mechanism, and mechanisms can fail. When a stablecoin drifts away from the value it is supposed to hold, that is a depeg.

What exactly is a peg?

A peg is the fixed value a stablecoin is designed to track. For USDC and USDT, that peg is one US dollar. The issuer maintains it by holding reserves, real dollars and short-term assets, backing every coin in circulation. If you hold one USDC, Circle should hold roughly one dollar of assets against it. Anyone should be able to redeem one USDC for one dollar, and it is that redeemability that keeps the market price anchored at a dollar.

That is the theory. A depeg happens when the market price drifts away from that dollar, either above or, more worryingly, below.

Why do depegs happen?

There is no single cause, but the pattern usually comes down to one thing: doubt about the reserves.

The most common trigger is a loss of confidence in the backing. If the market suspects the issuer does not actually hold enough real assets, or that those assets are stuck somewhere, holders rush to sell. Selling pressure pushes the price below a dollar, which fuels more doubt, which fuels more selling.

The clearest real-world example is the USDC depeg of March 2023. Circle disclosed that a portion of its reserves was held at Silicon Valley Bank, which had just collapsed. The reserves were real, but suddenly they looked at risk. USDC fell to around 87 cents. When it became clear the deposits would be made whole, USDC returned to its dollar peg within days. The lesson is instructive: the coin recovered because the backing was genuinely there.

The other kind of depeg is far more severe. Algorithmic stablecoins, which try to hold their peg through code and market incentives rather than real reserves, can fail permanently. TerraUSD (UST) collapsed in 2022 and never recovered, wiping out enormous value. That is the difference between a coin backed by assets and a coin backed by a mechanism that can break.

How likely is a depeg, really?

For the major fiat-backed stablecoins, a serious and lasting depeg is uncommon. USDC and USDT have both held their peg through significant market stress. The USDC event in 2023 lasted days, not months, and resolved once the underlying facts were clear.

But "uncommon" is not "impossible", and the distinction between coin types matters enormously. A stablecoin fully backed by cash and short-term government debt, with regular attestations from an accounting firm, is in a different risk category from an algorithmic coin holding its peg through clever incentives. If you want a deeper look at how the major coins compare, our guide on what stablecoins are covers the different models.

What does a depeg mean if you get paid in stablecoins?

This is the practical question. Three things follow.

First, the risk is real but usually short-lived. If you receive USDC and it briefly trades at 95 cents, the value of your holding drops on paper. If the peg is restored, and for well-backed coins it usually is, that loss disappears. The people who suffer permanent losses in a depeg are typically the ones who panic-sell at the bottom.

Second, the risk is time-based. The longer you hold stablecoins, the more exposure you have to a depeg event happening while you hold them. A freelancer who receives USDC and converts to euros within days carries far less exposure than someone holding a large stablecoin balance for a year. If you are thinking about cashing out, our article on how to sell stablecoins for euros walks through the process.

Third, and this is the part most people miss, a depeg has bookkeeping consequences. Your income is recorded at its euro value at the moment you received it. If you are paid 1,000 USDC during a depeg, when it is trading at 95 cents rather than a dollar, the euro value of that income is genuinely lower. Your records need to reflect the actual value at the actual moment, not the assumed value.

Why accurate records matter more than you think

This is where a depeg stops being a market curiosity and becomes an accounting problem. If you assume 1,000 USDC always equals a fixed euro amount, your books will be wrong. The euro value depends on both the USD/EUR exchange rate and, during a depeg, on whether the coin was actually holding its dollar peg at that moment.

Reading those values off a chart for every payment is exactly the kind of manual work that produces errors. stbl admin removes that problem: it records the actual euro value of each incoming payment at the exact moment it landed, whatever the market was doing. If a payment arrived during a wobble, your books show what it was genuinely worth, not what it should have been worth. That is what makes the records defensible.

How to reduce your depeg risk

Choose well-regulated, fully reserved stablecoins with transparent attestations. Avoid algorithmic stablecoins for receiving income, since their failure mode is permanent rather than temporary. Do not hold large stablecoin balances longer than you need to, since converting to euros removes the exposure entirely. And keep accurate euro-denominated records of every payment as it arrives, so that whatever the market does, your books tell the truth.

A depeg is a real risk, but a manageable one. Understand the mechanism, choose your coins carefully, and keep clean records. To see how the full flow from payment to bookkeeper-ready report works, take a look at how stbl admin works.

This article is for general information and is not financial advice. Stablecoins carry risk, including the risk of losing their peg. Do your own research and consult a qualified professional for advice specific to your situation.