What happens to an active swap if the stablecoin starts to depeg

05 September 2026

The swap completes at the rate locked when you submitted the order. The exchanger does not cancel or reprice in-progress swaps if the stablecoin loses its peg.

Here is why that matters, and what you should understand before you start a swap.

How the rate is fixed

When you initiate a swap on joelube.xyz, the system quotes a rate and locks it for a short window - typically a few minutes. That rate is the exchange rate between the two assets at that instant, not a prediction of future value. If the stablecoin you are sending or receiving begins to depeg during those minutes, the locked rate still applies.

Example: You swap 1,000 USDT for USDC. The rate is 0.998. Even if USDT drops to $0.95 on the open market during the swap, you still receive 998 USDC. You do not receive less. You also do not receive more if the peg strengthens.

The risk sits with you

The locked rate protects you from short-term volatility during the swap itself. It does not protect you from a stablecoin that has already depegged before you clicked submit. If you send a stablecoin that is trading at $0.90, you receive the equivalent in the destination asset at that depressed value.

This is the same risk as holding the stablecoin in your wallet. A swap is not a hedge against depegging. It is an exchange of one asset for another at a moment in time.

What the exchanger does not do

The exchanger does not monitor market feeds for depegging events. It does not pause swaps or offer a "safe mode" that only processes when the peg holds. The system treats all assets as their on-chain value at the time of the swap. It has no mechanism to detect that USDT is trading at $0.85 on Binance and adjust your rate accordingly.

Some centralized exchanges halt trading of a depegging stablecoin. Decentralized swaps like this one do not. They execute what the smart contract says, regardless of external market conditions.

What you can do

If you are worried about a stablecoin depegging during a swap, consider these steps before you begin:

• Check the stablecoin's market price on a separate data source before you swap. If it is already off peg, the swap will reflect that.
• Keep your swap amount small enough that a sudden depeg would not be catastrophic. The risk is proportional to the size.
• Use a stablecoin with a longer track record of peg stability if you are nervous. This is not a recommendation - just a description of how risk varies.

Real-world example

In March 2023, USDC briefly depegged to $0.87 after Silicon Valley Bank failed. Swaps that were in flight during that period completed at the rate locked before the depeg. Users who had submitted a swap to convert USDC to USDT at 0.998 received 0.998 USDT per USDC, even though USDC was trading below $0.90 by the time the swap settled.

Users who had submitted a swap to convert USDT to USDC at 0.998 received 0.998 USDC per USDT, which was suddenly worth about $0.87. They did not get a better rate because USDT held its peg. The locked rate cut both ways.

Next steps

If you want to understand how stablecoins maintain their peg in the first place, or what the difference is between a collateralized stablecoin and an algorithmic one, read the hub page "Swapping into and out of stablecoins." That page covers the fundamentals that make these swaps possible - and explains why a depeg is a rare but real event.

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