1. Interest Backdating Most card issuers charge interest from the day a charge is posted to your account if you donπt pay in full monthly. But, some charge interest from the date of purchase, days before they have even paid the store on your behalf! REMEDY: Find another card issuer, or always pay your bill in full by the due date. 2. Two-Cycle Billing Issuers which use this method of calculating interest, charge two months worth of interest for the first month you failed to pay off your total balance in full. This issue arises only when you switch from paying in full to carrying a balance from month to month. REMEDY : Switch issuers or always pay your balance in full. 3. The Right To Setoff If you have money on deposit at a bank, and also have your credit card there, you may have signed an agreement when you opened the deposit account which permits the bank to take those funds if you become delinquent on your credit card. REMEDY : Bank at separate institutions, or ...