About the UK Student Loan Repayment Calculator
FreeToolr's UK Student Loan Repayment Calculator estimates what you may repay on a UK student loan. Choose your loan plan, enter your current balance and yearly salary before tax, then add salary growth and the first April you were due to repay. You can use the 2026/27 rate for your plan or enter your own yearly rate. The tool shows monthly and yearly repayments, the threshold, interest rate, possible write-off, total repayment and amount written off. A year-by-year table shows how the estimate changes over time. Results update as you type, with no calculate button. The tool runs in your browser, and nothing is uploaded. You can copy the result or share a link that reopens with your numbers. It uses stated thresholds, rates and write-off periods instead of hiding its assumptions. Treat every result as an estimate, not an official repayment statement.
How to use it
- 1Select your loan plan from the list.
- 2Enter your current loan balance in GBP.
- 3Enter your yearly salary before tax and expected annual salary growth.
- 4Choose the first April you were due to repay and select an interest-rate option.
- 5Review the instant results and year-by-year table, then copy or share them.
Worked example
Example inputs: Plan 2, £30,000 balance, £40,000 yearly salary, 0% salary growth, first April due to repay in 2026, and the 2026/27 plan rate. The repayment threshold is £29,385. Income above it is £10,615. At 9%, the yearly repayment is £955.35, or £79.61 per month before payroll rounding.
The formula
You repay 9% of income above the threshold (6% for Postgraduate loans), taken from your pay each month2026/27 thresholds: Plan 1 £26,900, Plan 2 £29,385, Plan 4 £33,795, Plan 5 £25,000, Postgraduate £21,000Interest from 1 September 2026: Plan 1, 4 and 5 at 4.1% (RPI)Plan 2 runs from 4.1% at £29,385 or less up to RPI + 3% at £52,885, and Postgraduate is RPI + 3%, but both are capped at 6% until 31 August 2027Write-off: Plan 1 after 25 years, Plan 2, Plan 4 and Postgraduate after 30 years, Plan 5 after 40 years, counted from the April you were first due to repayThe estimate keeps 2026/27 thresholds and rates for future yearsPlan 1 loans taken out before September 2006 are written off at age 65, and some older Plan 4 loans at 65 or after 30 yearsIf you have a Postgraduate loan as well as another plan, you pay bothSource: GOV.UK: Rates and thresholds for employers, 2026 to 2027GOV.UK: How student loan repayments are calculatedGOV.UK: Repaying your student loan. Last checked 5 November 2026.
What it is good for
- Compare repayment estimates across UK loan plans.
- See total repayment and the possible amount written off.
- Check a year-by-year projection using your salary growth assumption.
- This is an estimate. Future years keep 2026/27 thresholds and rates, although the Plan 1 threshold rises to £28,005 in April 2027.
- Annual estimates may differ from payslips because payroll uses pay periods, bonuses, overtime and rounding. The tool does not replace an official Student Loans Company statement.
Questions people ask
How are UK student loan repayments calculated?
Plans 1, 2, 4 and 5 use 9% of income above the relevant threshold. Postgraduate loans use 6% above £21,000. Your loan balance does not set the current income-based deduction.
What are the 2026/27 UK student loan thresholds?
The thresholds are £26,900 for Plan 1, £29,385 for Plan 2, £33,795 for Plan 4, £25,000 for Plan 5 and £21,000 for Postgraduate loans. The figures come from GOV.UK guidance for employers.
Do I repay if my salary is below the threshold?
You normally have no PAYE repayment for that pay period when your pay is below the applicable threshold. Interest may still be added to your balance.
Does a larger loan balance mean larger monthly repayments?
No. Your current repayment depends mainly on your gross income and plan threshold. The balance affects whether you clear the loan before its write-off period ends.
What happens if I have an undergraduate and Postgraduate loan?
You can repay both at the same time. The undergraduate plan uses 9% above its threshold, while the Postgraduate loan uses 6% above £21,000.
When is a UK student loan written off?
The usual periods are 25 years for Plan 1, 30 years for Plans 2, 4 and Postgraduate loans, and 40 years for Plan 5. Older loans can follow different rules, including age 65 in some cases.
Why might the calculator differ from my payslip?
Employers calculate deductions by pay period, not only by annual salary. Bonuses, overtime, irregular pay and rounding can change the amount deducted from an individual payslip.
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