The RVN Wallet does not charge any fees to send a transaction. However, the Ravencoin network does require a fee, called a "transaction fee". This fee is calculated based on the amount of activity in your wallet, and is always displayed to you before you authorize a payment to be sent.

Wallets that receive many small payments before trying to send one large transaction may be charged a higher transaction fee. When possible, try to reduce the number of small transactions to or from your wallet (such as mining directly to the wallet) by first combining them into a few larger transactions.