What is a change (refund) address and why do I need it?

A change address is a backup destination where ChangeNOW can return your funds if a swap cannot be completed for any reason. When you start a swap, you may be asked to provide a second address (the change address) — usually it can be the same as the address you're sending from. It exists to make refunds automatic: if something goes wrong, the coins return there instead of waiting for a manual investigation. Always use an address you fully control and keep it in the same network as the coin you send.

A typical ChangeNOW swap is a five-step flow: pick the pair, choose FixRate or FloatingRate, enter the receiving address, send your coins, and wait for the exchange to be forwarded to your address. Most swaps complete in 5–30 minutes depending on network congestion, and the exchange status is trackable in real time on the official site.

Two habits prevent the vast majority of swap problems: always set a change (refund) address, and start with a small test transaction when trying an unfamiliar pair. If a swap fails, the change address is where ChangeNOW returns your funds, so leaving it empty or wrong is the most common user error.

Bottom line

A change address is a backup destination where ChangeNOW can return your funds if a swap cannot be completed for any reason. For the full picture, see the complete ChangeNOW FAQ covering fees, KYC, limits, refunds, supported coins, and more.