A recurring interval of time used to calculate interest and how much you owe at the conclusion of the time period. Your credit card statement will reflect all card activity, interest accrued, and fees assessed during your billing cycle. Billing cycle length varies by credit card issuer, but it is typically 20 to 45 days. Your payment due date, which is based on your billing cycle, must, however, fall on the same day of each month as dictated by 2009’s Credit CARD Act.