Check Destination Gas Before You Bridge Crypto

A crypto bridge can move tokens to another network without giving your wallet the native token needed to spend them there. Before you confirm, check how delivery works, which token pays destination fees and whether your wallet will have enough of it for the next transaction.

Does the bridge deliver funds automatically?

Some routes complete delivery in one flow; others may require a separate claim or follow-up transaction on the destination network. The bridge’s quote and transaction screen should show whether the transfer is automatic, whether a claim is required and which network the wallet must be connected to.

Compare the quoted route with a Paraswap guide to moving crypto across chains for more detail on the transfer mechanics. A token arriving in your wallet does not by itself confirm that you can use it: the next action may still require destination gas.

Which token pays destination gas?

Each network sets fees in its own gas token, and a bridge may deliver a different asset. Check the destination network’s fee token in the wallet or bridge interface, then confirm that you already hold some or that the route explicitly includes a gas top-up.

Use these three checks before signing:

• Network: Confirm the destination network name in both the bridge and wallet.
• Fee token: Check which native token pays for transactions on that network.
• Delivery: Look for a claim step, gas top-up or separate fee in the route details.

A displayed token balance can be misleading if it is a bridged or wrapped asset rather than the network’s fee token. Read the asset label and network carefully; a token with a familiar name may not pay gas.

How much gas should you keep?

Keep enough of the fee token for the action you plan to take after the bridge, such as swapping, sending or approving a token. Fees vary with network conditions and the transaction, so a fixed amount is not reliable; check the wallet’s estimate when you are ready to act.

If the balance is short, pause before bridging and choose a route or funding method that can leave you with destination gas. Once the transfer settles, verify the destination network and fee-token balance before attempting the next transaction.