Compare Credit Cards with CardSmart

How Credit Card Interest Fees are Calculated

Card providers calculate interest on your balance differently so it pays to understand how your particular provider does this. By looking around and even switching cards you could end up making some meaningful savings.

More from Understanding Credit Cards
18 December 2008

Image for guide: How Credit Card Interest Fees are Calculated

Credit Card Interest

Did you know that if you had two different cards with the same rate you could still end up paying more on one?

This is one of those topics that can be a bit eye watering, but it pays to get the facts - a little knowledge can make a big difference.

If you withdraw cash from an ATM using your credit card or don’t pay off your balance in full every month you’ll be charged interest.

Did you know that if you had two different cards with the same rate you could still end up paying more on one, just because of the way that the interest is calculated?

If you do withdraw cash this is usually charged at a higher interest rate (the cash withdrawal rate) and it is likely that you’ll be charged from the day you take the money out. You will also be subject to a typical handling fee of 1.5% of the amount drawn.

Take the Time to Compare Rates and Charges

Providers charge interest on transactions at different times. Some cards charge from the moment you buy something, others wait for a few days until they actually pay the retailer (for instance) for your purchase.

Another example is if you take cash out on your card but repay your balance, which may be a combination of purchases and cash withdrawals in full. You will be charged interest on the cash withdrawals. Some providers charge interest up to the date that the bill is issued. Others, however, charge interest until they actually receive the payment.

In both cases a few days extra interest can make a real difference at the end of the year.

If you only pay the minimum or part of your balance the interest you are charged is added to your bill. To continue to pay minimum or part payments will incur more and more interest, making the final price you pay for your card purchases greater.

Become Familiar with the Jargon

The APR (annual percentage rate) determines what interest you’ll be charged on any balance left outstanding at the end of the month. These rates vary considerably from 0% to anything upwards from 20% or even 29% so it is important to get a card with the best APR, depending on your spending habits.

If you have a balance that you’ll be able to pay off in a finite amount of time it is worth considering a 0% interest Balance Transfer credit card. Bear in mind that most card providers charge a fee if you are transferring the balance but it can still be worth transferring, especially if you can clear the balance in the allotted offer period.

If you miss a payment your provider may forfeit the interest free period, leading to extra charges. The most efficient way to avoid this problem is to set up a direct debit.

Late Fees

If you don’t make the minimum payment in time you may be charge a late fee, which can range from £10 to £25 so it is important to set up a direct debit.

Annual Charges

Some credit cards have an additional annual charge or fee, which is something to take into consideration when choosing a card.

What is your Credit History?

Quite often, banks and credit card companies use credit history to set interest rates on a credit card. People with a poor credit history might be offered a higher rate while someone with a good credit history will receive a lower rate.

Take a View

  • Interest is charged on any balance left on the card at the end of the month

  • Interest is charged on any cash withdrawals as well as a fee on the amount withdrawn. This applies even if you pay your bill in full at the end of the month as cash withdrawals are treated differently

  • The ways that credit card providers calculate interest varies and can make a difference to the amount you pay over time

  • Choose the lowest APR as this impacts on any balance left unpaid

  • Read the small print to see if your provider charges an additional annual fee

  • Don’t leave paying to the last minute and risk getting charged a late fee - set up a direct debit to ensure payment is made on time

Written by Sarah Nyman

Best Buy Credit Cards

Credit Cards Balance Transfers Purchases APR Representative (Variable)
Tesco ClubCard Purchases Credit Card Logo Tesco Bank Logo Tesco ClubCard Purchases Credit Card Apply
9 months
2.9% fee
18 months
Representative Example: The annual purchase rate is 16.9% p.a (variable) so if you spend £1200 your representative apr will be 16.9% p.a (variable)
Barclaycard Platinum With BT (27 Mths) Logo Barclaycard Logo Barclaycard Platinum With BT (27 Mths) Apply
28 months
3.5% fee
6 months
Representative Example: The annual purchase rate is 18.9% p.a (variable) so if you spend £1200 your representative apr will be 18.9% p.a (variable)
Compare More Credit Cards...


Some important information about this page

The content and information on this website are intended as general information only and shall not be construed as financial advice or recommendations of any nature in accordance with the Financial Services and Markets Act 2000 nor is it intended to address specific financial requirements. We strongly recommend that you seek independent financial advice before using and/or relying on the information made available to you or prior to purchasing any financial product/service listed on the Website. Whilst every attempt has been made to ensure that the content and information published are true, correct and up to date, no warranty, guarantee or representation is given as to its accuracy, reliability or fitness for a specific purpose.

The Best Buy credit card comparison tables feature financial products/services of our advertisers and may not necessarily constitute the best offers in the market for each of such products/services.

Copyright © CardSmart Ltd 2009 - 2013. All Rights Reserved | Privacy Policy | Terms

"CardSmart" and the CardSmart logo are registered trademarks of Smart Online Marketing Ltd. Company registration no: 08430745