Loan comparison calculator

Updated 7 November 2026 · ClearCost UK · 4 min read

A £10,000 loan at 7.9% over 3 years costs £311.65 a month and £1,219 in interest. The same amount at 12.9% over 5 years costs £223.43 a month but £3,406 in interest, which is £2,186 more. Compare your own two offers below.
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How to compare two loans properly

Look past the monthly payment. A lower payment usually means a longer term and more interest overall. Compare the APR, the term, the total repaid and any fees. The calculator shows all three so you can see the real difference.

£10,000 borrowed

Loan A (7.9%, 3 years)Loan B (12.9%, 5 years)Difference
Monthly payment£311.65£223.43-£88.22
Total repaid£11,219£13,406£2,186
Total interest£1,219£3,406£2,186

Fixed rates, equal monthly payments, no fees.

What else to compare

  • Arrangement or origination fees, which add to the cost.
  • Early repayment terms: can you overpay without a charge?
  • Whether the rate is fixed or variable.
  • How the lender treats a missed payment.
  • Whether the quoted APR is the one you will actually be offered.

Sources and further reading

Questions people ask

How do I compare loan offers?
Compare the APR, the term, the total amount repaid and any fees. Use the same loan amount for each offer so the numbers are like for like.

Results are estimates for information only, not financial advice. Read the full disclaimer.

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