A gas fee, also known as transaction fee, is the cost required by the network to execute operations on the network (blockhain). These operations can range from simple transfers from one address to the other, to more complex smart contract interactions. The type of interaction will also cause the transaction (gas fee) to vary, more simple operations will require les fees to be paid than a more complex one.

The transaction fee or gas fee will always be paid in the native coin of the network (blockhain) on which the transaction is being performed. Native coins are the native cryptocurrencies for a specific blockchain. For example, in the Avalanche ecosystem, AVAX is the native coin, therefore every fee charged for transaction execution will be paid in AVAX.

Some examples of the more popular blockchains, and their native coin would be:

• Bitcoin - BTC

• Ethereum - ETH

• Polygon - POL (former MATIC)

• BNB Chain - BNB