UK Student Loan Calculator

What the UK student loan calculator does

The calculator works out your yearly and monthly repayment from your salary and repayment plan. A UK student loan is repaid as a percentage of income above a threshold, so the result shows what will come out of your pay, whether you are budgeting, comparing job offers or checking how the system works.

Repayments depend on income, not the balance

Your repayment depends on what you earn, not what you owe. You repay a set percentage of income above your plan’s threshold, and the size of your balance does not change the monthly figure.

• If your income rises, your repayment rises.
• If your income falls below the threshold, your repayment stops.
• Two people with very different balances but the same salary repay the same amount each month.

That makes the loan behave more like a payroll contribution than a normal debt. With a normal debt, paying it off faster saves interest. With a student loan, whether you ever clear the balance depends on your future earnings, because the deduction is fixed by income and the loan is written off after a set period. For many borrowers the monthly deduction matters more day to day than the balance, which may never be repaid in full.

How the calculator works

Enter your annual salary and your repayment plan. The calculator takes the part of your income above the plan threshold, applies the repayment rate and reports the yearly and monthly deduction. In the advanced options you can add a bonus, which increases the income assessed, and a salary sacrifice pension contribution, which reduces it, and include a postgraduate loan alongside an undergraduate plan.

The 2026/27 thresholds and rates

• Plan 1: 9% of income above £26,900
• Plan 2: 9% of income above £29,385
• Plan 4 (Scotland): 9% of income above £33,795
• Plan 5: 9% of income above £25,000
• Postgraduate loan: 6% of income above £21,000

Plans differ by when you studied, where in the UK you studied and the type of course. If you are not sure which applies to you, check your loan paperwork or online account.

You can be repaying an undergraduate loan and a postgraduate loan at the same time. Each has its own threshold and rate and the deductions add together, so your total repayment is larger than a single-plan figure. Tick the postgraduate option to include both.

A worked example

On a £35,000 salary with a Plan 2 loan, £5,615 of income is above the £29,385 threshold. At 9% that is £505.35 a year, about £42.11 a month. If you also have a postgraduate loan, 6% of the £14,000 above £21,000 adds £840 a year, about £70 a month.

The role of interest

Interest affects how your balance grows and how long the loan lasts, but not the amount deducted from your salary, which is set by your income and threshold. Loans are written off after a set period, so many people never repay the full balance plus interest.

That is why voluntary overpayments need careful thought. Paying extra only helps if you were on track to clear the balance before it is written off. If your regular repayments would never cover the loan within the write-off period, overpaying means paying money you might never otherwise have paid.

When to use this calculator

• Budgeting your take-home pay
• Comparing job offers with different salaries
• Seeing how a pay rise increases your repayment
• Checking the effect of moving to part-time or lower-paid work

Because the repayment rises with income above the threshold, part of any pay rise goes on a larger deduction while you are still repaying. Looking at the net effect, rather than the headline salary, shows how much better off a move leaves you.

Things to keep in mind

• The estimate uses the standard thresholds and rates for the plan you choose.
• Payroll works out deductions per pay period, so real deductions can vary slightly from a yearly estimate.
• Thresholds are reviewed periodically, and the figures here are kept current.

For your exact position, check your official student loan account or payslip.

This is general information to help you plan, not financial advice. Confirm figures with your loan provider or payroll before relying on them.

About This Student Loan Repayment Calculator

Use this student loan repayment calculator to get an instant, accurate estimate. The figures follow official GOV.UK guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.