How the period works
A credit card groups your purchases into a monthly statement. Purchases made during the statement period, up to about 30 days, are billed on the statement date, and you then have a further period, typically 20 to 25 days, to pay. A purchase made on the first day of the statement period therefore enjoys the full span, up to 56 days on many cards; one made on the last day gets only the payment period. The average is around six weeks. No interest is charged on purchases during this span, on one condition.
The condition
You must pay the full statement balance by the due date. Not the minimum, not most of it: all of it. Pay in full and the purchases cost nothing beyond the annual fee. Pay anything less and, under the terms of most cards, interest is charged on the whole balance from the transaction date of each purchase, not from the due date, and continues on new purchases until you next clear the statement in full. The grace period is not a right that accrues; it is a reward that is withdrawn retroactively.
What never qualifies
Cash withdrawals at an ATM, and transactions the card treats as cash, such as buying foreign currency, gambling stakes or some money transfers, carry interest from the day of the transaction, usually at a higher rate, plus a withdrawal fee, whether or not you pay the statement in full. Balance transfers have their own promotional terms. Read the card's price list for which transactions count as cash; the list is longer than most people expect.
The minimum-payment trap
The minimum payment, often two to three percent of the balance or a fixed floor, is set to keep the account in good standing, not to repay the debt. On a €3,000 balance at 20 percent, paying the minimum each month takes well over a decade to clear and costs more in interest than the original balance. Since the revised Consumer Credit Directive applies from November 2026, lenders must warn more clearly about the cost of minimum payments, but the arithmetic is unchanged: a card that revolves is a loan at a card's rate.
The APR, compared
A credit card is consumer credit under EU law and must show an APR. Revolving balances typically cost 15 to 25 percent a year, two to three times the APR of a personal loan for the same person. A card used for purchases and cleared monthly is a free short-term loan plus a fee; a card carrying a balance is one of the most expensive forms of credit a consumer can hold. If you carry a balance for more than a couple of months, a personal loan to repay it is the cheaper instrument, as the loans hub explains.
In practice
Set a direct debit for the full statement balance, not the minimum, so the condition is met without thinking. Time large purchases for just after the statement date to get the longest span. Never withdraw cash on a credit card unless the alternative is worse. Compare cards on annual fee and on the APR for the case you are in: zero balance carried means the fee is the whole cost; a balance carried means the APR is.
