APR vs real monthly cost
APR is the annualised rate, but card interest can be applied more frequently. This is why balances can feel stubborn if payments are small.
Credit card guide
Credit Card Interest Cost UK: How Much Will You Pay?
Credit card interest can build quickly, especially if you only make minimum repayments. The longer the balance stays unpaid, the more interest you may pay.
The key numbers are your balance, APR, monthly repayment, and whether new spending keeps being added.
Minimum payments are slow
Minimum payments are designed to keep the account moving, not to clear the balance quickly. Paying extra can make a big difference.
Simple example
Balance: £2,000
APR: 24.9%
Payment: minimum only
This can take far longer and cost much more than expected.
Ways to reduce interest
- Pay more than the minimum
- Stop adding new spending
- Consider a balance transfer
- Target highest APR debts first
Snowball vs avalanche repayment
Snowball: clear the smallest balance first for motivation.
Avalanche: clear the highest interest debt first to reduce interest cost.
The best method is the one you can stick with.
Quick decision checklist
Pay more than minimumSmall extras can shorten repayment.
Avoid new spendingNew purchases keep the balance alive.
Watch APRHigher rates punish slow repayment.
Compare strategiesAvalanche saves money; snowball helps motivation.
Frequently asked questions
How is credit card interest calculated?
Credit card interest is usually based on APR and may be calculated daily on the outstanding balance if you do not clear it in full.
Do I pay interest if I clear my balance every month?
Usually not on purchases, as long as you pay the statement balance in full by the due date.
Why are minimum payments costly?
Minimum payments can keep the debt around for longer, which may increase the total interest paid.
What is APR?
APR stands for annual percentage rate and helps show the yearly cost of borrowing.
Can a balance transfer reduce interest?
It can, especially with a 0% balance transfer deal, but you should check fees and when the promotional rate ends.
Should I pay highest interest or smallest balance first?
Highest interest first usually saves more money. Smallest balance first can help with motivation.
Does credit card interest compound?
It can effectively compound when interest is added to the balance and future interest is charged on that higher balance.
How can I pay off credit card debt faster?
Pay more than the minimum, stop adding new spending, and test different monthly repayment amounts.