# Starknet Fees

Starknet transaction fees are similar to [legacy EVM fees](/user-guide/manage-transactions/understand-transaction-fees/evm-chains#legacy-fee).

A Starknet transaction pays transactions fees in gas.

New v3 transactions (which Fordefi supports) pays fees in [STRK](https://starkscan.co/contract/0x04718f5a0fc34cc1af16a1cdee98ffb20c31f5cd61d6ab07201858f4287c938d).

Each Starknet transaction is submitted with the following fields:

- **Max Gas Amount:** This provides a cap to the amount of gas units that will be used by transaction The maximum gas amount for a Starknet transaction is defined in wei units (**1 STRK = 1,000,000,000,000,000,000 wei**).
- **Max Gas Price:** The maximum gas price per unit.


Both maximum gas price and maximum gas amount are handled internally by Fordefi based on current network state and running simulations.