Every UK student loan has an expiry date. However much you still owe when it arrives, the remaining balance is cancelled completely, and for a large share of borrowers, that cancellation is the moment their loan actually ends, not full repayment. This guide covers exactly when that happens for each plan, what triggers it, and what write-off means in practice if it applies to you.
To see where your own loan is heading, our student loan calculator models your repayment year by year and shows whether you're on track to clear the balance or reach write-off first. For the mechanics of monthly repayment itself, see our student loan repayment guide.
The Write-Off Period for Every Plan
The write-off clock starts on a fixed date, the April after you first became due to repay, which is usually the April after you leave or finish your course. From that date, each plan runs for a set number of years before any remaining balance is cancelled.
| Plan | Who it's for | Write-off period |
|---|---|---|
| Plan 1 | Pre-2012 England, Wales & NI students | 25 years |
| Plan 2 | England & Wales, 2012–2023 starters | 30 years |
| Plan 4 | Scotland (SAAS) | 30 years |
| Plan 5 | England, August 2023 onward | 40 years |
| Postgraduate | Master's & Doctoral loans | 30 years |
Plan 5's 40-year term stands out. It's a deliberate design choice from the 2023 reforms, and combined with a lower repayment threshold, it means Plan 5 borrowers typically repay more in total than Plan 2 borrowers did, even though a larger share of Plan 5 debt gets written off in the end. Longer write-off and lower threshold together, not either alone, is what drives that.
A legacy rule you can probably ignore: older Plan 1 loans (first paid before September 2006) and older Plan 4 loans (first paid before August 2007) write off at age 65 instead, if that comes sooner than the standard period. This affects almost no one currently repaying, since it only applies to loans taken out roughly two decades ago. If your course started in 2012 or later, go by the standard years above.
Why This Matters More Than Your Balance
The single most useful thing to understand about student loans is that your outstanding balance and what you'll actually repay are two different numbers, and for most borrowers, quite far apart. Because repayments are set at 9% (or 6% for Postgraduate loans) of income above a threshold, not a percentage of what you owe, your monthly deduction is identical whether your balance is £20,000 or £120,000.
The Department for Education's own forecasting bears this out directly. Of full-time undergraduate borrowers who started their course in 2024/25, the department expects 56% to repay their loan in full, which means an estimated 44% won't, and will have some balance written off instead. That's not a worst-case scenario. It's the government's own central forecast, and the proportion has shifted meaningfully over time as thresholds and interest rules have changed.
If you're carrying a balance that looks alarming next to your salary, this is the context that actually matters: for a large share of borrowers, the balance is a number that gets cancelled rather than collected, and what determines your total cost is your income and your plan's threshold, not the figure on your statement.
How the Write-Off Actually Happens
Nothing needs applying for. The Student Loans Company tracks your write-off date internally, and when it arrives, the remaining balance is simply cancelled. If you're still employed and having repayments taken through PAYE, your next payslip shows no student loan deduction at all, with no letter, form, or phone call required beforehand.
Two things commonly get assumed that aren't true. First, write-off doesn't create a tax bill: the cancelled amount isn't treated as income, so there's nothing to declare and nothing owed. Second, it has no effect on your credit file, because UK student loans were never reported to credit reference agencies in the first place, not even while you were actively repaying. Write-off simply ends a deduction that was never visible to lenders as debt in the way a credit card or personal loan would be.
Worked Example
Assuming 3.5% average annual salary growth and 6% interest held flat for the full period, a Plan 2 loan in this position never clears within the 30-year write-off window.
The balance actually grows for most of the 30 years, since interest is added faster than a salary in this range can repay it, before finally being cancelled in full. Repaying £60,042 while £179,092 gets written off might look like the system failing, but it's working exactly as designed: the borrower paid a fixed, income-linked amount for the full term, and the state absorbed the rest. This is precisely the scenario our student loan calculator is built to show, including the same conditional insight about whether salary sacrifice could reduce the total repaid in a case like this.
Death and Permanent Disability
Separate from the standard time-based write-off, UK student loan regulations require the loan to be cancelled immediately in two further situations, regardless of how long you've been repaying.
If you die, the outstanding balance is written off in full. It does not pass to your estate, your partner, or your children, and no one else becomes liable for it. The Student Loans Company needs to be notified, usually by a family member or the executor of the estate providing a death certificate, but no debt is ever created for anyone else to inherit.
If you become permanently unable to work because of a disability, you can apply to have the loan written off early. Unlike the time-based write-off, this isn't automatic: the Student Loans Company requires medical evidence from a professional confirming you won't be able to work again, and you need to apply directly rather than waiting for it to happen on its own.
Ask the Student Loans Company: if you're unsure exactly which April your write-off clock started, or whether an older Plan 1 or Plan 4 loan falls under the age-65 rule, your online SLC account shows the specific date your loan is due to be written off, rather than leaving it to a general rule of thumb.