PayBreakdown

Loan repayment calculator

Estimate UK loan repayments from amount, APR, rate and term, with overpayment, total interest, payoff time and affordability caveats.

What this works out to

Use this public loan repayment hub to estimate monthly repayments, total interest and payoff time from a loan amount, APR or interest rate, and repayment term. The figures are illustrative planning outputs, not a lender quote, credit approval, eligibility decision or personalised borrowing advice.

What this loan costs each month

Enter the amount borrowed, the APR, the term in months and anything you would pay on top. Nothing is stored and nothing leaves your browser.

Monthly payment£210
Total repaid
£12,594
Interest over the term
£2,594
Cost of the credit
25.94% of the amount borrowed
Interest saved by overpaying
£627
Months saved
13
Cleared after
47 months

Repaying £210 a month — £10,000 at 9.9%, the rate treated as an effective annual figure, its twelfth root applied monthly — clears it in 60 months. A longer term lowers the monthly payment and raises the total.

Paying £50 a month on top — with the monthly payment held level and the term shortened — clears it after 47 months instead of 60, and saves £627 in interest. Check the agreement first: some allow overpayment without charge and some do not.

This is arithmetic on the figures you enter, not debt advice. It assumes the rate and the payment both stay the same and that nothing further is borrowed, which is rarely how a real balance behaves. For free, regulated help, talk to MoneyHelper or StepChange.

Checks worth making on loan repayment

Assumptions used here

Assumptions used here
Tax/source year2026/27
RegionEngland/Wales/Northern Ireland
Tax code basis1257L where the page uses PAYE defaults
Pension basisNo pension deduction unless this example says otherwise
Student loan basisNo student loan unless selected in this example

What changes this result

What changes this result
Deposit and debtsDeposit size, existing credit commitments, childcare and other bills can matter as much as gross income.
Rate and termInterest rate, term, fees and lender policy can change the repayment pressure.

Source and methodology context

Source and methodology context
What is not decided herePayBreakdown does not decide payroll correctness, lender approval, benefit entitlement or employer compliance, and does not give regulated financial, mortgage, debt, tax, payroll or legal advice.

What the repayment calculator estimates

The repayment tool is designed for common UK borrowing scenarios such as personal loans, car finance, mortgages, credit cards and other fixed-payment balances. It compares the borrowed amount, term and rate to estimate a monthly repayment and total interest cost.

  • Loan amount sets the starting balance.
  • APR or interest rate drives the interest estimate.
  • Term length changes both the monthly payment and total interest.

APR, interest and lender quote caveats

APR, fees, compounding, introductory rates, variable rates, missed payments, early repayment charges and product-specific rules can all make a real lender quote differ from an illustrative calculator result.

  • Use APR-to-payment pages when the monthly payment is the main question.
  • Use the overpayment tool when comparing faster payoff scenarios.

Affordability and budget checks

A repayment can look manageable in isolation and still be uncomfortable once rent, mortgage, bills, childcare, travel, savings and existing debts are included. Link the repayment estimate back to salary take-home pay and the budget planner before treating it as affordable.

  • Compare repayment size with monthly take-home pay.
  • Keep emergency savings separate from planned overpayments.
  • Do not treat this page as credit advice or approval.

What would change this figure

Interest rate, term, fees, deposit and the credit commitments you already have all move the result, and a lender applies its own affordability policy and credit checks on top. Treat the number as a way to see whether a repayment looks comfortable or stretched, not as an offer — and read it against your real bills, savings and any income change you expect. See how each deduction is worked out.

Frequently asked questions

Can I compare overpaying with the standard repayment plan?

Yes. The repayment calculator shows the standard plan next to a version that includes your chosen monthly or annual overpayments.

Is the loan repayment calculator a lender quote?

No. It is an illustrative repayment estimate. A lender quote can differ because of fees, product rules, rate changes, credit checks, early repayment charges and eligibility criteria.

What inputs change a monthly loan repayment?

The main inputs are loan amount, APR or interest rate, repayment term, repayment type and any extra overpayment. A longer term can reduce the monthly payment but may increase total interest.

Can overpayments reduce total interest?

Often they can, but the result depends on the product rules and whether overpayments reduce the balance immediately. Check for early repayment charges or overpayment limits.

How should I check if a repayment is affordable?

Compare the estimated repayment with take-home pay, essential bills, savings buffers and existing credit commitments. The budget planner is the safer next step after the repayment estimate.

Last updated 2026-08-27. Checked by Sean Elsmore. Rates last checked against GOV.UK on 2026-08-07. Estimates are for planning and should be checked against official records where the decision matters.