Credit card repayment calculator

Get a clearer picture of your costs

See what your balance could cost you

Calculate how much credit card interest you could pay over time

Put repayments to the test

Compare repayment scenarios to see what works for your budget

See if a switch stacks up

Check whether a balance transfer could cut repayment costs

Credit card repayment calculator

How much do you owe on your credit card?

Outstanding balance

Please enter an outstanding balance between £1 and £10,000,000

Annual percentage rate (APR)

% APR

Please enter an interest rate between 0.1% and 100%

How are you paying off your credit card?

The minimum payment

Fixed amount

How much is your minimum payment amount?

Where can I find my minimum payment amount?

You can find your minimum repayment amount on your credit card statement, or you can call up your credit card provider to ask what it is.

Percentage of total balance

Please enter a percentage between 1% and 100%

Cash amount

Please enter a cash amount between £1 and £10,000,000

How much are you paying per month?

£ per month

Please enter a fixed payment between £1 and £10,000,000

Your monthly payments aren't enough to repay your card debt.

Try increasing your monthly payments

Your result

Total to repay ( monthly payments of )

Based on what you’ve told us, you’ll pay off your card in

You could save by switching to a balance transfer card with these terms

months at 0% interest
% one-off transfer fee

You wouldn't save any money under these balance transfer terms

The balance transfer fee outweighs the interest you'd save.

Breakdown of your result and potential savings

Your current credit card	How much you could save by switching
Total to repay	Total to repay
Paid off by	Paid off by
Balance	Balance (including % balance transfer fee)
APR	APR 0% for months* Then back to
Monthly payments of	Monthly payments of
Interest you'll pay	Interest you'll pay

See how much you could save

Edit card details

0% balance transfer period**

Transfer fee

Please enter a percentage amount between 1% and 10%

You could save by switching to a 0% balance transfer card with these terms

You wouldn't save any money under these balance transfer terms

The balance transfer fee outweighs the interest you'd save.

Find out which cards you're eligible for without impacting your credit score

Compare credit cards

_{**If you don’t pay off your card debt within the 0% period you will be charged interest again. For illustrative
purposes we’ve used the interest you entered for your current card.}

Results are based on several assumptions about the card holder. We assume the interest rate stays the same and is calculated monthly. We also assume there is no additional spend on the card during your repayment, no balance transfer and no additional fees are charged.

How does the credit card calculator work?

Our credit card calculator shows how your repayments, interest rate and outstanding balance work together over time. It helps you see:

How long it could take to clear your credit card balance
How much interest you might pay in total
How changes to your monthly repayments could affect both time and cost to repay
How your current deal compares with switching to a 0% balance transfer card

This makes it easier to understand not just how quickly you could repay your debt, but where you might be able to reduce interest and save money overall.

How do I use the credit card calculator?

Using our credit card calculator to figure out how to tackle your credit card debt is easy:

Find out the balance you want to move

Check your credit card balance and interest rate using your lender’s app or online banking

Work out what's affordable to pay back

Decide how much you can realistically afford to repay each month – this should be at least the minimum amount

Use the calculator

Put your details into the calculator to see how long repayment could take and how much interest you might pay

Play around with the numbers

Adjust your monthly payment to see how even small changes could reduce interest costs

See what you could save

Use the savings view to see how your current card compares with a 0% balance transfer option

This can help you spot potential savings much earlier and decide whether increasing repayments or switching cards could help you clear your balance sooner.

Find out more: how to clear your credit card debt

What our expert says...

“It’s vital to ensure that you make at least the minimum payment each month or you could face a penalty and damage to your credit score.

"Using our credit card calculator can be a real eye-opener when you see just how much difference even a relatively small increase in your monthly repayments can make to the amount of interest you pay over the life of the card. So always try to pay off as much as you can.”

Charlie Evans, Personal finance expert

How to pay off your credit card balance faster

Compare balance transfer cards

Make larger fixed payments every month

Minimum payments keep costs low in the short term. But increasing your monthly repayments helps you pay off your credit card debt quicker and saves you money in interest if you're not on a 0% deal.

Tackle the most expensive debt first

If you have multiple cards, focus extra repayments on the one charging the highest interest, while keeping up minimum payments on the rest.

Switch to a balance transfer credit card

Moving your balance to a card with a 0% or lower interest rate can cut interest for as long as the promotional rate is in place. A transfer fee usually applies, so factor this in when working out whether you’ll save (our calculator will do this for you).

Compare balance transfer cards

A quick overview of credit card terms

APR

The APR (annual percentage rate) is the total cost of borrowing over a year, including interest and any standard card fees

Fixed amount

If you’re not just making the minimum payment, this is an amount that you’ve chosen to pay off your balance each month

Interest rate

This determines the cost of your borrowing

Minimum payment

The minimum amount you must repay each month. It’s usually worked out as either a percentage of what you owe or a set amount, whichever is higher

Outstanding balance

The amount you owe on your credit card

What happens if I only pay the minimum amount on my credit card?

If you only make the minimum payment:

It could take much longer to pay off your balance
Unless you’re on a 0% interest deal, you’ll pay more in interest
Your credit card provider may see you as being in ‘persistent debt’, which could damage your credit score and even get your card suspended.

Quick tip

If you’re really struggling to clear your debt, speak to your lender as soon as possible to talk through your options.

You can also get in touch with a debt charity such as StepChange or National Debtline.

What happens if I miss a credit card repayment?

If you miss a credit card repayment, are late repaying or pay less than the minimum amount:

You’ll usually get hit with a late payment fee, which is often £12.
You may also lose any introductory benefits or interest rates. For example, if you had a 0% interest rate, you may be forced to begin paying the lender’s standard interest rate.
Your credit score will likely be negatively affected, which could make it more difficult or expensive to borrow again in future.

Learn more about how late payments affect your credit score.

Compare credit cards

You can use our eligibility checker to see how likely you are to be approved for a credit card.

This carries out a soft search and doesn’t negatively affect your credit score.

Compare the Market Limited acts as a credit broker, not a lender. To apply you must be a UK resident and aged 18 or over. Credit is subject to status and eligibility.

Check eligibility

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Reviewed 12 Jun 2026 by Charlie Evans Personal finance expert

Charlie is a senior commercial leader with close to a decade of experience across the UK’s leading personal-finance and comparison platforms. Before joining Compare the Market as Head of Commercial in 2024, he held senior commercial roles at TotallyMoney and MoneySuperMarket Group.