It depends. Generally, the Credit CARD Act prohibits creditors from charging a fee for making a payment. However, a fee may be charged if you make a payment using a payment method involving an expedited service by a member service representative of the creditor.
Service by a member service representative means any payment made to the account with the assistance of a live representative or agent of the creditor. It includes those made in person, on the telephone, or by electronic means.
Fees cannot be charged for payments made using only a voice response unit or placed in a branch or office mail slot.