> For the complete documentation index, see [llms.txt](https://liquidity-pool-wiki.gitbook.io/liquidity-pool-wiki-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://liquidity-pool-wiki.gitbook.io/liquidity-pool-wiki-docs/cross-chain-swaps-choose-the-cheaper-order.md).

# Cross-chain swaps: choose the cheaper order

A cross-chain swap moves value from a token on one network into a different token on another. The cheaper order depends on which network has the token you need and where you want to use it.

### When does swap-then-bridge fit?

Swap first when the bridge accepts the token you want to send, but not the token you currently hold. You trade on the starting network, then bridge the result to your destination.

For example, say you hold Token A and need Token B on another network. If the bridge supports Token B, compare the cost of swapping A to B first with the cost of bridging A and swapping later. On [SpookySwap](https://crypto-marko.mataroa.blog/blog/what-are-the-main-spookyswap-options-and-when-do-they-fit/), check that the selected network and token match the bridge route before you sign.

This order can save a step if the first swap gives you a bridge-ready token. It does not fit if that token has thin liquidity, meaning few buyers and sellers; your trade may move its price. Compare the quoted output after slippage, the estimated price change, rather than just the displayed swap fee.

### When does bridge-then-swap fit?

Bridge first when your current token is supported on the route and the destination network has a better market for the token you want. The bridge transfers a token representation to the other network; then a local swap trades it there.

This can be cheaper when the destination pool has more liquidity or a tighter price. It costs two transactions, though: one on the source network and one on the destination. You may also need each network’s native token to pay gas, the fee for processing a transaction. Keep a small amount of the destination network’s native token ready before bridging.

Check the token name and contract on arrival. Some bridges deliver a wrapped token, a version that represents the original asset on another network. It may not be accepted by the pool or app you plan to use, even if its ticker looks familiar.

### How do you choose between the two?

Compare the amount you expect to have at the destination, not the number of steps alone. Include the source swap fee, bridge fee, destination swap fee, gas on both networks, and likely price impact. For a small trade, two gas fees can outweigh a slightly better exchange rate.

For example, on a $100 trade, a route that saves 0.5% on price but adds $1 in fees leaves you worse off. The exact figures vary with network traffic, pool depth, and trade size. Recheck the quote just before signing because these estimates can change.

I would use swap-then-bridge when the bridge clearly supports the desired token and the source pool gives a strong quote. Otherwise, bridge the supported asset and swap on the destination. Before sending a larger amount, try a small transfer once to confirm the token arrives in a form your destination app accepts.