Why do I need ETH to Send digital assets that aren’t ETH?

ERC-20 tokens rely on the Ethereum network to process transactions. To pay for these transactions (commonly called “gas fees”), you must have ETH in your wallet.

These fees cannot be automatically deducted from your ERC-20 token balance; they can only be paid in ETH. This is a rule of the Ethereum network - not set or controlled by RockWallet.

How much ETH should I keep for gas fees?

We recommend keeping $15–$30 worth of ETH in your account to cover gas fees comfortably.

The $30 minimum ETH purchase is set within the app (not by the network) to help make sure you have enough to cover these variable fees. This helps prevent your transactions from failing or getting stuck if network costs spike unexpectedly.

You can always check current Ethereum gas fees using a gas tracker before you transact.