How to use this calculator
The results update as you type.
- Your loan plan: Plan 1, 2, 4 or 5, or a Postgraduate Loan. You can check your plan in your online repayment account.
- Loan balance: what you owe today, including interest added so far.
- Yearly salary before tax: your current gross pay.
- Expected yearly pay rise: how much you expect your salary to grow each year.
- Years since you were first due to repay: used to count down to the write-off date. Enter 0 if your first repayments start this April.
The results show your monthly repayment now, the interest rate, whether you’ll repay the loan or have it written off and when, the total you’ll repay and any amount written off. The chart and table show your balance year by year.
Example: £45,000 on Plan 2
Say you have £45,000 of Plan 2 debt, earn £35,000, and expect 3% pay rises each year.
- Monthly repayment now: 9% of the £5,615 above the £29,385 threshold, or £42.11 a month.
- Interest rate now: 4.55%, because Plan 2 interest rises with income above £29,385.
- Outcome: you’d repay £70,523 over 30 years, and the remaining £97,648 would be written off.
Early on, the interest added each year is more than you repay, so the balance grows even while you pay. For many Plan 2 borrowers, the loan works more like a 9% tax on earnings above the threshold, for up to 30 years, than a normal debt.
Compare a higher earner. On £60,000 with the same balance, repayments start at £229.61 a month and the loan is cleared in 19 years. They’d repay £80,071 in total, more than the person on £35,000, but they’d be free of it 11 years sooner.
Other plans work differently:
- Plan 1: £15,000 left, earning £32,000, 5 years into repaying: £38.25 a month, cleared in 18 more years.
- Postgraduate Loan: £12,000, earning £40,000: £95 a month, cleared in 12 years.
How it’s calculated
- Repayment = 9% × (salary − plan threshold), or 6% over £21,000 for a Postgraduate Loan, worked out monthly.
- Interest is added each month at your plan’s yearly rate ÷ 12. Plan 2’s rate rises in a straight line from 4.1% at £29,385 to 6% at £52,885.
- Each year, your salary rises by the pay rise you entered.
- Repayments continue until the balance reaches zero or the write-off date: 25 years for Plan 1, 30 years for Plans 2 and 4 and Postgraduate, and 40 years for Plan 5, counted from the April you were first due to repay.
The calculator keeps today’s thresholds and interest rates for every future year, but both change over time. Interest rates are usually updated each September. Older Plan 1 and Plan 4 loans, taken out before September 2006 and August 2007, are written off at 65 instead, which isn’t modelled here.
Tips for managing your student loan
- Check your plan and balance. Your online repayment account shows both, and they decide everything else.
- Check your payslip. Make sure your employer is taking repayments for the right plan.
- Think before overpaying. If you’re unlikely to clear the loan before it’s written off, extra payments may not save you money.
- Use real pay rises. The result depends heavily on how your income grows. Try a few different rates.
- Keep your contact details up to date. You’ll get statements and can check that repayments have been recorded.
Frequently asked questions
How much will I repay on my student loan each month?
You repay 9% of your income over your plan's threshold. For 2026/27, the thresholds are £26,900 for Plan 1, £29,385 for Plan 2, £33,795 for Plan 4 and £25,000 for Plan 5. Postgraduate Loans are 6% of income over £21,000. On a £35,000 salary, Plan 2 repayments are £42.11 a month.
When is my student loan written off?
Plan 1 loans taken out from September 2006 are written off 25 years after the April you were first due to repay. Plan 2 and Postgraduate Loans are written off after 30 years, Plan 4 loans from August 2007 after 30 years, and Plan 5 loans after 40 years.
What interest rate is charged on my student loan?
GOV.UK currently lists 4.1% for Plans 1, 4 and 5, and 6% for Postgraduate Loans. Plan 2 interest after you leave your course depends on your income, from 4.1% at £29,385 or less, up to 6% at £52,885 or more.
Will I ever pay off my Plan 2 loan?
It depends on your balance and how much you earn over the years. In our example, someone with £45,000 of debt earning £35,000 would repay £70,523 over 30 years and still have £97,648 written off. On £60,000, they'd clear the loan in 19 years.
Should I make extra repayments?
You can make voluntary repayments, but think it through first. If your loan is likely to be written off before you'd clear it, extra payments may not reduce the total you pay. Use the calculator to see whether you're on course to repay in full.
Can I have more than one student loan?
Yes. If you have a Postgraduate Loan as well as an undergraduate plan, you repay both at the same time: 6% over £21,000 for the Postgraduate Loan plus 9% over your other plan's threshold. Work out each loan separately with this calculator.