What is the average fee charged by large banks for using an out-of-network ATM?

The average fee charged by large banks for using an out-of-network ATM is typically around $2.50. This fee is levied because the bank does not have a partnership with the ATM provider, which means they incur costs for processing your transaction. Additionally, the ATM operator may charge its own fee on top of this. Always check with your specific bank for the exact fees that apply to your account.