Guide · 4 minute read

Should I pay off my student loan early?

For most borrowers, no. A UK student loan behaves like a tax on income, not a debt with a balance you must clear, and overpaying a balance that will be written off anyway is money down the drain.

It is a tax in everything but name

A normal debt has to be repaid in full, so the balance matters. A student loan does not work like that. You repay 9% of gross pay above your plan's threshold (6% for a postgraduate loan), the deduction comes off your payslip like tax, and whatever is left at the write-off date is cancelled. The balance never appears on your credit file and nobody chases you for it.

On Plan 2, with its £29,385 threshold for 2026/27, a £35,000 salary repays 9% of £5,615: about £505 a year, or £42 a month. Earn under the threshold, perhaps after a career break or a drop in hours, and you repay nothing at all that month. No real debt behaves that way. The honest question is not "how do I clear this balance" but "will I ever clear it before write-off", and the student loan calculator shows your repayment for every plan.

The write-off date is the whole decision

Each plan cancels the remaining balance after a fixed period from the April you were first due to repay: 25 years on Plan 1, 30 years on Plan 2, Plan 4 and the Postgraduate Loan, and 40 years on Plan 5.

This is why two people with identical balances should make opposite choices. If your earnings mean you will never repay the balance before write-off, every voluntary pound you throw at it simply reduces an amount that was going to be cancelled anyway. You gain nothing. If your earnings mean you will clear it years early regardless, overpaying genuinely shortens the loan and cuts the interest you pay, exactly like a normal debt.

Who realistically clears it

Plan 2 borrowers mostly do not. The threshold is high enough, and typical balances large enough, that government modelling has long expected the majority to reach the 30-year write-off still owing money.

The picture changes on Plan 5. The threshold is £25,000, the lowest of the main plans, repayments start earlier, and the term runs 40 years, so far more borrowers repay in full eventually. A Plan 5 borrower on £60,000 repays 9% of £35,000: £3,150 a year, about £262 a month, which clears a typical balance with decades to spare. High and rising earners on Plan 5, and anyone stacking a Postgraduate Loan (6% above £21,000 on top of the main plan, so 15p in every extra pound above both thresholds), are the people for whom early repayment can genuinely make sense.

A quick test: if your repayments comfortably exceed the interest being added and your salary is heading upwards, you are probably a clearer. If repayments barely dent the balance, you are paying the graduate tax until write-off and should treat the balance as irrelevant.

Even if you will clear it, run the maths

Suppose you are a confirmed clearer with £200 a month spare. Overpaying the loan earns you a guaranteed return equal to the loan's interest rate. Investing the same £200 in a pension or stocks and shares ISA has historically returned more over long periods, plus tax relief in the pension case, though with no guarantee. Money in the loan is also gone for good: voluntary repayments cannot be refunded if your income later drops, while money in an ISA stays accessible.

So early repayment suits clearers who value certainty, have no expensive debt, and have already filled the obvious tax-advantaged homes for the money. Check what an overpayment actually frees up each month with the take-home pay calculator before committing.

Never trade the pension match for loan overpayments

One rule has no exceptions: do not cut pension contributions below your employer's match to overpay a student loan. A matched contribution is an instant 100% return before any growth, and no student loan interest rate comes close. Expensive debt like credit cards (often 20% plus) and a basic emergency fund also rank ahead of voluntary loan repayments for almost everyone.

Common questions

Does my student loan affect my credit score or mortgage application?

It never appears on your credit file, so your score is untouched. Mortgage lenders do count the monthly repayment in affordability checks, since it reduces take-home pay, but clearing the loan early just to boost borrowing power rarely beats keeping the cash for a larger deposit.

Can I get student loan repayments refunded?

Sometimes. If your total income for a tax year ended up below your plan's annual threshold, or you were put on the wrong plan, you can reclaim those payroll deductions from the Student Loans Company. Voluntary overpayments are different: they cannot be refunded, which is a real reason to hesitate before making them.

Is interest still added if I am repaying nothing?

Yes. Interest accrues from the day the first payment is made to you, even while you earn under the threshold. That sounds alarming, but if you are heading for write-off the growing balance is cosmetic: your repayments are set by income alone, never by the size of the balance.

I have a Plan 2 and a postgraduate loan. Which should I overpay first?

If you overpay at all, usually the postgraduate loan. It is smaller, charged at 6% above £21,000 alongside your main plan, and typically carries the higher interest rate, so it is the one a high earner can realistically kill off to recover 6p in the pound of payslip deductions.

Should I use an inheritance or bonus to clear the whole balance?

Only if you were going to repay in full before write-off anyway, and even then compare it against pension contributions, ISA investing and any expensive debt first. If you were never going to clear the balance, using a windfall on it converts cancellable money into spent money.

Guidance and education, not regulated financial advice.