For most graduates, paying off a student loan early is a straightforward waste of money. For a minority it is a smart move. The difference comes down to a single question, and this calculator answers it.
Loan Summary
Career Scenario
| Year | Loan Balance | Total Repaid |
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The only question that matters
Will you clear the balance in full before it is written off? If the answer is no, stop reading and never overpay. Your loan will be wiped after 25, 30 or 40 years depending on your plan, and any extra pound you throw at it simply vanishes. You would have been paying off a debt that was about to be cancelled.
If the answer is yes, overpaying genuinely saves you interest, and the sooner you do it the more you save. Enter your balance, salary and plan above to see which camp you are in.
Why a student loan is not really a debt
It behaves far more like a graduate tax. It never appears on your credit file. It cannot be sent to a debt collector. If you lose your job, repayments stop automatically. If you never earn above the threshold, you never pay anything. No commercial loan on earth works like that, and the instinct to clear debt fast simply does not transfer.
Overpay, or invest the money instead?
If you are confident you will clear the loan, compare the loan interest rate with what the money could earn elsewhere. Overpaying a loan charging 6% is the equivalent of a guaranteed, tax-free 6% return, which is genuinely hard to beat. But if your loan is charging 4.1% and you have unused pension allowance with employer matching, the pension almost always wins.
- Pay off the expensive stuff first. Credit cards and overdrafts charge far more than any student loan. Clear those before you even consider overpaying.
- Take the free money. Employer pension matching is an instant return no student loan overpayment can match.
- Keep an emergency fund. Money sent to the Student Loans Company cannot be taken back. Ever.
- Then, and only then, consider overpaying, and only if you will genuinely clear the balance.
Plan by plan
Your plan changes the odds substantially. Plan 5 borrowers repay for 40 years above a low £25,000 threshold, so a far higher proportion will clear their balance and overpaying is more often worthwhile. Plan 2 borrowers, with a 30-year term and a higher threshold, mostly never clear it. Plan 1 has the shortest term at 25 years and the lowest interest, so mid-to-high earners frequently do finish it.
Model your exact position with the full repayment calculator, or see the mechanics on the overpayment calculator.
Frequently asked questions
Will overpaying improve my credit score?
No. Student loans do not appear on your credit file, so clearing one changes nothing. It can marginally help a mortgage application by removing the deduction from your payslip.
Can I get a refund if I overpay by mistake?
If you repaid when your income was below the threshold, or repaid after the loan was already cleared, you can reclaim it from the Student Loans Company. Voluntary overpayments, however, are not refundable.
Might student loans be scrapped or changed?
Terms have been changed retrospectively before, and rarely in borrowers’ favour. That is an argument for not tying up money you cannot recover in a loan that may be written off anyway.
This is an estimate, not financial advice. Consider speaking to a regulated adviser before making a large overpayment.