Who actually controls the funds when a swap does not complete

07 September 2026

When a swap does not complete, the funds remain under the control of the exchange's operational wallets, not yours, until a refund is issued. The exchange holds the private keys to the deposit address and the return address; you have no direct access to move the coins yourself.

This arrangement exists because of how a typical swap works. You send cryptocurrency to a deposit address generated by the exchange. That address is a hot wallet controlled entirely by the exchange's software. The exchange monitors the blockchain for incoming transactions, then attempts to execute the swap by sending the output currency to your destination address. If something prevents completion - such as network congestion, insufficient confirmations, or a mismatch in the expected amount - the exchange retains custody of your deposit. You cannot retrieve it manually. The exchange must initiate a refund transaction back to the address you sent from.

Control therefore rests with the exchange's automated systems. Those systems decide, based on their internal logic, whether to attempt the swap again, hold the funds pending manual review, or return them. Human operators may step in if the automated system flags an anomaly, but in most routine failures the process is fully scripted.

The key distinction is that your funds are not lost. They are still on the blockchain, sitting at an address the exchange controls. The exchange can see them. The question is whether its refund mechanism will act, and how quickly.

A few factors can delay or complicate that control. If the deposit address is re-used for multiple users (rare but possible), the exchange's accounting might need to untangle which coins belong to which user before a refund is safe to send. If the network is congested, the exchange may hold the funds until transaction fees drop to a level it considers acceptable for the refund. If the deposit was made to a wrong network (e.g. sending ERC-20 tokens to a Bitcoin address), the exchange may not control that address at all, and the funds are effectively frozen unless the exchange's team can recover them via manual intervention - something they are not obligated to do.

In all cases, the exchange bears the responsibility of custody until the refund is confirmed on-chain. You bear the risk of waiting. The exchange does not lend your deposit out or use it for other purposes while it sits in the pending state; it simply holds it. But "holds" is not the same as "returns automatically." Many failed swaps require you to contact support, because the automated refund timer did not trigger due to an edge case.

If you are trying to understand what parts of your deposit or fees can be recovered, read the hub page: What you can recover from a failed swap. That page explains the difference between the principal amount, network fees paid, and the exchange's service fee, and which of those you might see again. The present page answers only the custody question: the exchange controls the funds, not you, until a refund is sent.

To summarize: your coins sit in the exchange's wallet. You cannot move them. The exchange can, and will, if its rules say so. The only way to regain control is for the exchange to push a refund transaction back to your wallet. If that does not happen automatically, your recourse is to ask support to trigger it.

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