How it's calculated
Student loan repayments come out of your pay through PAYE once your pay for a pay period goes over your plan's threshold for that period. HMRC's payroll specification for 2026/27 sets these annual thresholds:HMRC
| Plan | Yearly threshold | Rate |
|---|---|---|
| Plan 1 | £26,900 | 9% |
| Plan 2 | £29,385 | 9% |
| Plan 4 (Scotland) | £33,795 | 9% |
| Plan 5 | £25,000 | 9% |
| Postgraduate Loan | £21,000 | 6% |
The weekly or monthly threshold is the yearly one divided by the number of pay periods, rounded down to the penny. Each repayment is the rate times your pay above that threshold, rounded down to the pound. Each payslip is worked out on its own. Employers collect only one undergraduate plan at a time, but a Postgraduate Loan is collected alongside it.
Pay here means earnings that count for National Insurance, so salary sacrifice reduces repayments, but pension contributions under a net pay arrangement do not.
The formula
- Period threshold = yearly threshold ÷ pay periods (52, 26, 13 or 12), rounded down to the penny.
- Repayment = rate × (pay − period threshold), rounded down to the pound, if pay is over the threshold.
- Self Assessment: rate × (yearly income − yearly threshold).
Worked example
GOV.UK's example: on Plan 1, earning £2,750 a month, you repay £45 a month.GOV.UK The calculator gives £45.
On a £35,000 salary paid monthly, Plan 2 repayments are £42 a month, or £504 a year.
| Line | Per month | Year |
|---|---|---|
| Earnings | £2,917 | £35,000 |
| Plan 2: 9% over £2,448.75 a month | £42 | £504 |
| Total repayments | £42 | £504 |
With a Postgraduate Loan as well, the total is £112 a month.
| Line | Per month | Year |
|---|---|---|
| Earnings | £2,917 | £35,000 |
| Plan 2: 9% over £2,448.75 a month | £42 | £504 |
| Postgraduate Loan: 6% over £1,750.00 a month | £70 | £840 |
| Total repayments | £112 | £1,344 |
Assumptions and limitations
- Equal pay in every period. A bonus month can trigger a repayment even if your yearly pay is below the threshold; you can claim it back after the tax year.
- If you have more than one undergraduate plan, enter the one with the lowest threshold: that is the one your employer collects first.
- Interest, your balance and when the loan is written off are not modelled; repayments depend only on income.
- Repayments from more than one job are worked out separately for each job.