What a partial fill means on an XMR bridge

A partial fill means an XMR bridge completes only part of your swap order, leaving the rest unfilled or handled under the service’s rules. That can happen because you sent less than the quoted amount, or because a route could not fill the whole order at its quoted rate. Those are different cases, so check the order status before sending more.

Some routes split a large swap across several pools or providers to find enough liquidity, meaning available funds to trade. That is route splitting: the bridge may still deliver the full amount you requested. A partial fill means the completed amount is less than the order. For background on how routes differ, see this guide to choosing an XMR bridge route from your wallet. The route and the service’s terms determine whether a remainder can be filled, refunded or left for you to claim.

How does a partial fill happen?

A partial fill happens when the service processes only some of the amount in your order. In a common swap flow, you set the amount and destination, receive a quote, then send XMR to an address supplied for that order. The service checks the incoming payment against the order and uses the amount it accepts to calculate the destination payment.

If you send less than the order asks for, the service may offer to complete a smaller swap, wait for the balance or return the funds. If market depth is too low, a route may fill only part at the quoted price. Some services instead reject the route or seek another price. Partial fills are not a universal bridge feature; the order screen or service terms should say what happens next.

What happens to the unfilled amount?

The remainder may stay available to fill, be refunded, or require a new order. There is no single rule across XMR services. A refund can take another transaction and may involve fees. If the service asks you to top up, check that the original order is still open and that its rate and deadline have not changed.

Before sending, look for these details in the quote and order page:

• Whether the quote is fixed or can change before completion.
• The minimum accepted amount and any deadline to pay.
• Whether a short payment can be completed, refunded or needs support.
• How the service handles a remainder and any fees for a second transfer.

How can you check what the bridge received?

Use the order’s own status and payment details to confirm what the service counted. Monero transaction amounts and recipient addresses are not publicly visible on the blockchain, so a public transaction lookup alone cannot confirm the amount sent to a bridge. Keep the order ID and transaction ID, and use the service’s instructions if its recorded amount differs from your wallet.

Do not send a second payment to an old deposit address unless the order page or support confirms it is still valid. Monero transactions cannot be reversed after confirmation; getting funds back depends on the recipient returning them.

Is a partial fill different from a split route?

Yes. A split route divides a complete swap among multiple sources; a partial fill completes only part of the order. A bridge can split the route and still deliver the full destination amount. For most users, the simpler choice is to send the exact quoted amount in one payment and use a route whose order page explains what happens if conditions change. If an order is already partial, check its status before adding funds or creating a replacement.