To process all the exchanges in CWallet, we work with our partner Changelly, an instant cryptocurrency exchange. 

Both fixed and float exchange rates can be applied to the crypto pair. Here you can learn the difference between these two rates. 

The amount of commission is built of 3 parts in total:

- the network fee for the outgoing transaction from your address to Changelly,

- the commission for the exchange (already included in the exchange rate),

- the network fee for the incoming transaction from Changelly to your address. Please note, this network fee is deducted from the exchanged resulting amount.

If you exchange ERC20 tokens or coins, the network fee will be paid in Ethereum. If you haven't got Ethereum before exchanging, you won't be able to proceed to it.