yCalculator

APR Calculator

Last updated: May 2026

Arrangement fee treatment

Monthly cost breakdown

Principal and interest
£220.00
Annual fees, monthly equivalent
£0.00
Insurance premium
£0.00
Total monthly cost
£220.00
Step-by-step APR working

Step 1: Find the net credit received. Here that is £10,000.00.

Step 2: Build the repayment cash flow: 48 monthly payments of £220.00.

Step 3: Solve for the monthly rate that makes the present value of the repayments equal to the credit received.

Step 4: Convert that monthly rate to an effective annual rate: APR = 2.73%.

What is APR?

APR means Annual Percentage Rate. It is designed to show the annual cost of borrowing after compulsory fees and charges are included. That makes it more useful than the headline interest rate when you are comparing loans from different lenders.

Why does APR matter?

A loan with a lower interest rate can still be more expensive if it has a large arrangement fee, compulsory insurance, or a longer repayment term. APR pulls those mandatory costs into one comparable rate, while the total cost figure shows how much you will actually repay in pounds.

Representative APR explained

UK lenders advertise representative APR. This means at least 51% of successful applicants must be offered that rate. Your actual APR can be higher or lower depending on the loan amount, term, credit score, affordability checks, and whether any mandatory fees apply.

APR vs EAR vs AER

APR is normally used for borrowing. AER is used for savings accounts and shows the annual return including compounding. EAR is often used for overdrafts and shows the effective annual rate without optional fees. For loan comparisons, APR and total amount repayable are the two figures to check first.

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