Credit Card Grace Period Calculator (Best Day to Buy)

How it works

Statement date = the next closing day on or after the purchase · due date = statement date + days to pay · interest-free days = due date − purchase date · best day = the day after a closing date (maximum ≈ cycle length + days to pay) · worst day = the closing day itself

A credit card’s grace period runs from the purchase to the payment due date of the statement that includes it. A purchase made the day after the statement closes waits a whole cycle before being billed and then gets the full time to pay — roughly 45–55 days — while one made on the closing day is billed immediately and gets only the days to the due date. In Latin America this is the “fecha de corte” and “fecha límite de pago”. The grace period only applies when you pay the full statement balance; carry a balance and interest starts from the purchase date.

Worked example

The statement closes on the 15th and payment is due 20 days later. A purchase on October 20, 2026 lands on the November 15, 2026 statement, due December 5, 2026 — 46 days without interest if you pay in full. Buying on November 16 (the day after closing) would give 49 days; buying on the closing day itself, only 20.

Sources: CFPB — Credit cards · Wikipedia — Grace period

Frequently asked questions