Keep the dates separate
- Cycle start and close: Boundaries for the activity included in a billing period.
- Statement date: When the account statement is issued.
- Payment due date: When the required payment must be made.
- Grace period: A separate concept whose meaning and availability depend on the product.
Do not use the cycle closing date as a substitute for the payment due date.
Example
A hypothetical account groups activity from October 1 through October 31. It issues a statement November 2 with payment due November 20.
A customer is not late simply because October 31 has passed. Delinquency is evaluated against the applicable payment deadline and rules.
Cycle lengths vary
Cycles can be calendar-based or tied to an account anniversary. Monthly, quarterly, and annual billing arrangements are possible. Do not assume that every cycle lasts 28-31 days.
If calculating a date range, specify whether both start and end dates are included. October 1 through October 31 includes 31 calendar dates.
A credit-card distinction
For credit cards, the CFPB describes a grace period as the interval between cycle end and payment due date, during which interest may be avoided if the relevant conditions are met. It is not a universal late-payment waiver. See the CFPB's grace-period explanation.
Operational use
Store cycle dates separately from due dates and statement balances. Confirm approved date changes before altering reminders or fee calculations. Reconcile payments and adjustments so communications use the correct account state.
Related terms: Monthly Statements and Early-Stage Delinquency.