How can I avoid paying interest charges on my Capital One credit. Each month you pay your new credit card balance in full you have a grace period of 25 days with no interest charge on all new 1 purchases 2 balances 3 special purchases and 4 other changes. If you have being paying your account in full with no interest charges applied, and you do not pay your next bill in full, prorated interest charges will be assessed. There is no grace period on cash advances, special transfers, or any other new transaction when there is an unpaid balance from a previous bill. This is information a obtained from the back of a credit cardstatement from Capital One.