Should I Overpay My Student Loan?

Last updated: March 2026 · Use the calculator to model your own scenario

The Short Answer

For most graduates on Plan 2 or Plan 5 loans: no. The majority of borrowers will not repay their full balance before it is written off, so any voluntary overpayments would be money you didn't need to spend. Only borrowers who will comfortably clear their entire balance before the write-off date benefit from overpaying.

For Plan 1 borrowers with smaller balances and lower interest rates, overpaying is more often worthwhile — but it still depends on your balance, salary trajectory and what else you could do with that money.

How to Decide: The Key Question

The only question that matters is: will I fully repay my student loan before it is written off?

• If yes — overpaying saves you interest, because you clear the debt sooner and pay less total interest over the life of the loan.
• If no — overpaying is wasted money. The remaining balance is written off at no cost to you, so any extra payments simply reduce the amount that would have been forgiven for free.

You can check this using our student loan calculator. Enter your details and look at whether your loan is projected to be cleared or written off.

Worked Example: Plan 2

Scenario: £50,000 balance, £35,000 starting salary, 3% salary growth.

On Plan 2, this borrower's loan balance grows faster than their repayments in the early years — thanks to interest rates of RPI + up to 3%. Even with solid salary growth, the balance is still outstanding after 30 years and is written off.

Result: This borrower should not overpay. Any voluntary repayments would simply reduce the amount written off for free. They are better off saving or investing that money elsewhere.

Worked Example: Plan 1

Scenario: £18,000 balance, £30,000 starting salary, 3% salary growth.

Plan 1 has a much lower interest rate (currently 3.2%, capped at base rate + 1%). With this smaller balance and decent salary, the borrower is on track to fully repay within about 12 years.

Result: Overpaying could save several hundred pounds in interest and clear the debt years earlier. It may be worth doing, especially if the borrower has no higher-interest debts.

When Overpaying Makes Sense

• You are on Plan 1 with a relatively low remaining balance
• You are a high earner who will fully repay before write-off anyway
• You have no other higher-interest debts (credit cards, car loans)
• You have already built an emergency fund
• You are close to clearing the balance and want to remove the 9% deduction from your payslip

When You Should Not Overpay

• Your loan will be written off before you fully repay it
• You have higher-interest debts (always clear these first)
• You don't have an emergency fund
• The money could earn a better return invested elsewhere
• You are on Plan 2 or Plan 5 with a typical balance and salary trajectory

Important: You Can't Get Overpayments Back

Once you make a voluntary repayment, it cannot be refunded. If your circumstances change (e.g. you take time off work, your salary drops, or the government changes the write-off rules), you cannot recover the money.

How to Make Voluntary Repayments

If you've decided overpaying is right for you, contact the Student Loans Company (SLC) directly. Do not simply pay extra through HMRC payroll deductions — this can be difficult to reclaim. Instead, make a one-off payment directly to the SLC via their online repayment portal.

Model Your Own Scenario

Every borrower's situation is different. Use our student loan repayment calculator to enter your own balance, salary and plan type to see whether you'll repay in full or have your balance written off — and whether overpaying would save you money.