> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mayan.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# Fees & Earning

> Protocol fees and how integrators earn.

Two things can happen on a swap: Mayan may take a protocol fee, and if you set a referrer address, you take one too. Your referrer fee sits on top of the protocol fee rather than coming out of it.

## Protocol fee

**Swift has no protocol fee.** Orders filled through Swift, which is most swaps, carry zero.

Other methods do charge one, and the rate can change. The live value for any quote is returned as `protocolBps` in the quote response, so read it rather than hardcoding it.

## Relayer fees

Route-dependent, and returned per quote:

| Field                     | Notes                                                                            |
| ------------------------- | -------------------------------------------------------------------------------- |
| `solanaRelayerFee`        | Denominated in the input token on `WH`, in USDC on `MCTP`, and zero on `SWIFT`.  |
| `redeemRelayerFee`        | Denominated in the output token on `WH`, in USDC on `MCTP`, and zero on `SWIFT`. |
| `refundRelayerFee`        | Charged only if the order is refunded.                                           |
| `clientRelayerFeeSuccess` | Total dollar value of relayer fees if the swap succeeds.                         |
| `clientRelayerFeeRefund`  | Total dollar value if it refunds.                                                |

Show `clientRelayerFeeSuccess` if you display a cost breakdown. It is already the aggregate.

## Earning as an integrator

Set a `referrer` address and a `referrerBps` on the quote, then pass the matching `referrerAddresses` at swap time. The fee is collected onchain.

```typescript theme={null}
const quotes = await fetchQuote({
  // ...
  referrer: "YOUR_SOLANA_ADDRESS",
  referrerBps: 5,
});
```

Always pass your **Solana** address as `referrer`, whatever the source and destination chains, including EVM to EVM.

`referrerAddresses` is keyed by network type, because the address that receives the fee depends on which chain it settles on:

```typescript theme={null}
{ evm: "...", solana: "...", sui: "..." }
```

Pass the full object at swap time. The SDK picks the right wallet for the route.

## Where the fee is paid

Each route collects and pays differently.

| Route         | Paid on           | Collected in                                   | Maximum rate                                  | Paid only if                                                     |
| ------------- | ----------------- | ---------------------------------------------- | --------------------------------------------- | ---------------------------------------------------------------- |
| Swift         | Source chain      | The locked source asset, typically USDC or ETH | 200 bps                                       | The order completes                                              |
| MCTP          | Destination chain | The stablecoin minted during bridging          | 100 bps from Solana, 50 bps from other chains | The order completes and includes a swap on the destination chain |
| Fast MCTP     | Destination chain | The stablecoin minted during bridging          | 100 bps                                       | The order completes                                              |
| Wormhole Swap | Solana            | The output token                               | 50 bps, 10 bps by default                     | The order completes and includes a swap                          |

Two cases earn nothing. On MCTP, a plain USDC to USDC transfer has no destination swap. On Wormhole Swap, a transfer that does not swap, such as ETH on Ethereum to WETH on Solana, does not qualify either.

### Setting the rate

On Swift, MCTP and Fast MCTP, set the rate with `referrerBps` on the quote request.

On Wormhole Swap the rate is set onchain instead. Use [Referrer Fee Management](https://explorer.mayan.finance/referrer-fee) to set it against your Solana address.

### Collecting

Fees transfer to your address automatically on every route except **Swift with an EVM source chain**. Those accumulate in the [fee manager contract](https://etherscan.io/address/0x26227ACE40de5671e8355fCAFf65a0522aa7b303), and you withdraw them at [explorer.mayan.finance/withdraw-fee-swift](https://explorer.mayan.finance/withdraw-fee-swift).

<Warning>
  Your Solana referrer address needs associated token accounts for USDC, USDT and WETH. Without them you can lose the referrer fee on routes that pay out in those tokens. Create them by sending a dust amount of each token to the address.

  * USDC: `EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v`
  * USDT: `Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB`
  * WETH: `7vfCXTUXx5WJV5JADk17DUJ4ksgau7utNKj4b963voxs`
</Warning>

## Splitting across wallets

Pass a `referrers` object to `fetchQuote` instead, with a bps share per wallet, then pass the same object at swap time. The SDK throws if it does not match the quote. See [Fee Splitting](/build/sdk/fee-splitting).

## Next steps

<CardGroup cols={2}>
  <Card title="Fee Splitting" icon="coins" href="/build/sdk/fee-splitting">
    Split the referrer fee across several wallets.
  </Card>

  <Card title="Fetching Quotes" icon="magnifying-glass" href="/build/sdk/fetching-quotes">
    Setting `referrer` and `referrerBps` on the quote.
  </Card>
</CardGroup>