A grace period is the time from the date of a purchase to the date your payment is due during which you won't be charged any interest on purchases - provided you pay your full balance on time each month. Eligibility for an interest-free period may also depend upon additional criteria, which will vary from card to card. Understanding how interest-free periods work can help avoid paying unnecessary interest charges.

How Interest-Free Periods Work

Interest-free periods can either refer to a grace period or an extended 0% offer on purchases or balance transfers. In either case, during an interest-free period you won't be charged interest on your balances - but you will still need to make monthly payments that go towards reducing your outstanding balance.

Interest-Free Grace Periods

If you pay your full balance on time each month, you won't be charged any credit card interest - even though you might not pay back the credit card company for your purchase for nearly a month or two. This is called a grace period. Credit card issuers usually won't charge interest on purchases so long as cardholders consistently pay their bill in full and on time each month.

Grace periods usually last a maximum of 48 to 56 days from date of purchase, or 17 to 25 days after the end of a billing cycle. In most cases, in order to be eligible for an interest-free period you must pay your current month's balance in full by the due date AND must also have paid your previous month's balance in full by the due date.

When You Pay the Full Balance

By paying your credit card balance in full during the interest-free period (that is, before the due date), you can avoid interest charges on the most common transactions - purchases. Unless you have a valid promotional 0% offer, cash advances and balance transfers do not have interest-free periods, and instead accumulate interest immediately. The treatment of interest on cash withdrawals and balance transfers varies significantly from card to card.

Returning to interest-free periods for purchases, consider an example: £1,000 of purchases during your March billing cycle (with no cash withdrawals or balance transfers). At the end of the billing cycle you receive a bill with a due date of 25 April. The period of time from your purchases until the 25 April due date (up to 56 days) is your interest-free period. If you pay the full £1,000 balance by 25 April (and, in most cases, also paid the previous bill in full and on time), you don't pay any interest on any of the purchases you made in March. You are usually also eligible to avoid paying interest on the next billing cycle, in this case April.

When You Carry a Balance

If you don't pay the full balance in any given billing cycle, you're typically not eligible for an interest-free period in that cycle and possibly the next cycle, too. Additionally, you'll be charged interest on the unpaid portions of your balance.

Interest-free period eligibility requirements vary from issuer to issuer but most will allow you to reinstate your interest-free period by paying your bill in full and on time for one or two consecutive periods. Your credit card agreement will detail the requirements for interest-free periods for your particular card. This information can often be found quickly on a card's Summary Box.

Example: Let's say you make £1,000 of purchases during a billing period lasting from 1 March until 31 March, and the payment is due on 25 April. If you pay off £700 of the balance by the due date, you not only have to pay interest on the £300 remaining balance until you pay it off, but you also have to pay interest on the £700 you have cleared for the period from the purchase date until the payment date - by not paying the full balance you are not eligible for an interest-free period. Plus you'll probably need to pay interest on new purchases in the subsequent billing cycle.

Note: Paying the full balance on time each month is what allows a grace period to apply and avoids interest charges.

Explaining the Maximum Interest Free Period

The summary box of a credit card states the maximum number of interest-free days, but the actual number of interest-free days on a specific purchase depends on when in the billing cycle it's made.

This maximum span of time includes two discrete time periods - the time from any purchase until statement closing date PLUS the time from statement closing date until the payment due date. The first part is variable and depends upon when in your billing cycle you make a purchase. The second part is fixed (and can be calculated as the maximum interest free period less 31 days), most frequently ranging from 17 to 25 days.

In the example of a 56-day max interest-free period, the fixed portion of the grace period would be 25 days (56 days - 31 days). Purchases receive an interest-free period of length equal to the variable (days remaining in billing cycle) plus fixed (25 days) portions. For purchases made on the last day of your billing cycle, you receive 25 days interest free (essentially the fixed portion only). For purchases made on the first day of your billing cycle, you receive the full 56 days interest free (the 25-day fixed portion plus 31 days left in the billing cycle). Hence, cards declare a maximum of 56 days interest free.

No-Interest Promotional Periods for Purchases and Balance Transfers

Many credit cards these days offer 0% interest promotional periods on purchases and/or balance transfers. Promotional periods on balance transfers can last anywhere from one month up to 38 months (as of September 2026), while the longest 0% purchase deals typically last up to 26 months. So long as you remain eligible for the promotion, you won't pay interest on these balances carried from month to month during the promotional period.

No interest doesn't mean no payments, however. You'll still owe a minimum monthly payment - this payment will go wholly to reduce your balance and won't include interest charges. Eligibility requirements vary by card, but typically you must pay at least the minimum payment on time and stay within your credit limit in order to keep the 0% promotional period.

Interest-Free Grace Periods by Credit Card Issuer

On average across the brands in the table below, the interest-free period for the UK credit card issuers we analyzed was a minimum of 24 days (from the statement closing date) up to a maximum of 55 days (from purchase date). In most cases, you'll be eligible for a grace period on purchases if you paid your full balance by the due date every month, or in at least the past two consecutive billing cycles.

ClearScore is a credit broker, not a lender.

FAQs

What is the grace period on a credit card?

A grace period on a credit card is the time between when you make a purchase and your next due date, during which you won't be charged any interest so long as you paid the previous and current bills in full and on time.

How long is the grace period for credit cards?

The grace period for credit cards is typically between 17 and 56 days, depending on when you make a purchase in your billing cycle. This is because payment due dates are usually 17 to 25 after the end of each monthly billing cycle. Therefore, purchases made at the beginning of a billing cycle will get a longer grace period while purchases made at the end of your billing cycle get a shorter grace period.

What is an interest free period for credit cards?

An interest free period on a credit card can refer to the grace period or an extended offer

What happens when interest free period ends?

When a 0% interest period offer ends, you'll start paying interest at the stated rate on your card. This can result in a significant financial shock if a large balance remains on the card when the promotional window closes.

For more information on credit card finance charges, please see our articles What is Credit Card APR, Average Credit Card Interest Rates and How to Understand Your Credit Card Bill.

Card details correct as of 08 September 2026. Terms, rates and features are subject to change — always verify current details before applying. This article is for general information only and does not constitute financial advice.