# Send Fees

Fees. To account for the costs of each blockchain, fees must be paid on both the original network and the destination network. This covers SafeSwap's portion of the smart contract interactions.

### Find the Current Fees

SafeSwap has an API endpoint that will tell you what the fees need to be. Call this API and then have the user send these fees.

**Important:** The fees must be sent by the same user who made the Swap in the smart contract in [Initiate a Swap](/builders/api-integration-guide/perform-a-swap/initiate-a-swap.md).

Get the addresses for `SAFESWAP_FEE_ADDRESS_...` [here](/builders/api-integration-guide/our-swap-addresses.md), they are the same as the `SWAP_ADDRESSES`

**For Vechain:** the fee is to be paid in **VTHO**, not VET.

### Example

```javascript
const apiResponse = await fetch(`${SWAP_API_URL}/gas-estimate?sourceChain=VECHAIN&targetChain=ETHEREUM`, {
    headers: {
      'Content-Type': 'application/json',
      'X-API-KEY': 'MY_API_KEY'
    }
});

const fees = await apiResponse.json();

const originalChainFee = fees.sourceChain;
const destinationChainFee = fees.targetChain;

const originalTx = await signerOnOriginalChain.sendTransaction({to: SAFESWAP_FEE_ADDRESS_VECHAIN, value: originalChainFee})
const destinationTx = await signerOnDestinationChain.sendTransaction({to: SAFESWAP_FEE_ADDRESS_ETHEREUM, value: destinationChainFee})

const originalFeeTxId = originalTx.hash;
const destinationFeeTxId = destinationTx.hash;
```


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