Student Loan Repayments on Part-Time Wages

The Per-Pay-Period Rule

The single most important concept for part-time workers to understand is that student loan repayments through PAYE are calculated on a per-pay-period basis, not on your annual salary. This distinction matters enormously because it means your repayment obligation is assessed each time you are paid, based on your earnings for that specific period.

If you are paid weekly, your employer compares your gross weekly pay against the weekly threshold for your plan. If you are paid monthly, the comparison is against the monthly threshold. Only if your earnings for that period exceed the threshold will any deduction be made — and the deduction is 9% (or 6% for Postgraduate Loans) of the excess only. You can model your specific earnings using our student loan repayment calculator.

Weekly and Monthly Thresholds for 2026/27

Here are the thresholds broken down by pay frequency for every active repayment plan:

For most part-time workers, the weekly threshold is the relevant figure. Earning less than £517 per week gross means zero deductions under Plan 1. For Plan 5, the bar is even lower at £481 per week. At typical part-time hourly rates, you would need to work significant hours to breach these figures. For instance, at £12 per hour (close to the National Living Wage for over-21s), you would need to work around 42 hours in a week to hit the Plan 1 weekly threshold — which is essentially full-time.

Example: Part-Time Retail Worker

Consider a graduate working 20 hours per week in retail at £12.50 per hour. Gross weekly pay is £250 — well below every threshold in the table above. No student loan deductions are made. Annualised, that is about £13,000, far below even the lowest annual threshold of £21,000 for a Postgraduate Loan.

Now consider the same worker picking up extra shifts over the Christmas period, working 50 hours one week. That week's gross pay is £625, which exceeds the Plan 1 weekly threshold of £517 by £108. The deduction for that week would be 9% of £108, equalling £9.72. The following week, if hours drop back to 20, no deduction is made. This is the per-period system in action — you only pay when your earnings in that specific period cross the line.

Multiple Part-Time Jobs

Holding more than one part-time job adds complexity. Each employer runs PAYE independently, meaning each one only considers the pay they give you when calculating student loan deductions. If you earn £400 per week from Job A and £300 per week from Job B, neither employer would make a student loan deduction under Plan 1 (both amounts are below the £517 weekly threshold), even though your combined weekly income of £700 is well above it.

However, at the end of the tax year, your total annual income matters. If your combined earnings across all jobs exceed the annual threshold, you may owe student loan repayments through Self Assessment. HMRC will calculate the amount due based on your total income from all sources, and you will need to pay the difference through your tax return.

This is a common trap for graduates with multiple part-time jobs. During the year, no deductions are made, creating a false sense of security. Then, after filing Self Assessment, a lump-sum student loan payment becomes due. If your combined income across two jobs totals £30,000 per year and you are on Plan 2, you would owe 9% of the £615 above the £29,385 threshold — approximately £55.35 for the year — through Self Assessment. Our repayment calculator can help you estimate this in advance so there are no surprises.

Avoiding a Self Assessment Surprise

If you know your combined income from multiple jobs will exceed the threshold, consider the following steps to manage your cash flow:

• Ask one employer to apply a student loan deduction voluntarily by ensuring your tax code reflects the loan (contact HMRC to adjust your tax code if needed).
• Set money aside each month in anticipation of the year-end Self Assessment bill.
• Use our calculator to estimate the annual repayment so you know exactly how much to save.
• File your Self Assessment early so you know the amount owed well in advance of the payment deadline.

Zero-Hours Contracts

Zero-hours contracts are among the most variable working arrangements, with hours and pay fluctuating dramatically from week to week. The good news for student loan purposes is that the per-pay-period system handles this seamlessly. In weeks where you earn above the threshold, a deduction is made; in weeks where you earn below it, no deduction occurs. You do not need to do anything — your employer's payroll system manages it automatically.

The challenge with zero-hours contracts is predictability. If you are trying to budget or estimate how much you will repay over the year, the variable nature of your income makes it difficult. One approach is to look at your average weekly earnings over the past few months and model that figure in our student loan calculator. This will give you a reasonable estimate, though actual repayments will depend on the specific pattern of your hours and earnings throughout the year.

It is also worth noting that if your zero-hours contract results in an annual income that significantly exceeds the threshold in some years but falls below it in others, your student loan repayments will naturally mirror this pattern. In good years, you pay more; in lean years, you pay less or nothing. This is by design — the income-contingent nature of UK student loans means you only ever repay what you can reasonably afford.

Seasonal Work Patterns

Some part-time workers have predictable seasonal patterns — for example, working full-time during the summer and part-time during the academic year, or ramping up hours over the holiday season in hospitality or retail. These workers may find that student loan deductions appear on some payslips but not others, depending on whether each pay period's earnings exceed the threshold.

Seasonal work can also interact with the annual threshold in interesting ways. If you work intensively for six months and earn nothing for the other six, your annual income might be below the threshold even though your monthly pay during the working period exceeds the monthly threshold. In this case, PAYE deductions would be made during the working months, but you could be entitled to a refund at the end of the year because your total annual income was below the annual threshold. You would need to file a Self Assessment or contact HMRC to request the refund.

For example, if you earn £3,500 per month for six months (total £21,000) and nothing for the remaining six months, your annual income of £21,000 is below the Plan 1 threshold of £26,900. However, your monthly pay of £3,500 exceeds the monthly threshold of £2,241.67, so deductions would be made during those months. You could reclaim these deductions because your annual total is below the annual threshold. This is an important subtlety that many part-time and seasonal workers miss.

Term-Time Only Work

Current students who work part-time during term will typically earn well below the weekly threshold. Most student jobs pay around £10 to £13 per hour, and most students work fewer than 20 hours per week. This results in weekly earnings of around £200 to £260 — significantly below even the lowest weekly threshold of £404 for a Postgraduate Loan.

If you are a current student and your employer is making student loan deductions from your pay, something has likely gone wrong with your tax code. Current students should not have a student loan deduction code on their PAYE record because repayments do not start until the April after you leave your course. Contact HMRC to correct your tax code and your employer to stop the deductions. Any amounts already deducted can be refunded.

Graduates who work term-time only in educational roles — such as teaching assistants, exam invigilators, or peripatetic music teachers — face the same seasonal patterns discussed above. Their salaries are often annualised and paid in twelve equal monthly instalments even though work is only performed during term, which simplifies the student loan calculation because each monthly payslip shows the same gross amount. If this amount exceeds the monthly threshold, deductions will be made every month, including holidays. Check our calculator for specifics.

Combining Part-Time Work with Other Income

Part-time employed income is not the only source that counts for student loan purposes. If you also have self-employment income, rental income, or other taxable income, your total income across all sources is relevant when determining your annual student loan repayment through Self Assessment.

For example, suppose you earn £15,000 per year from a part-time job and £12,000 per year from freelance work. Your combined income of £27,000 exceeds the Plan 1 threshold of £26,900 and the Plan 5 threshold of £25,000, but falls just below the Plan 2 threshold of £29,385. If you are on Plan 1, you would owe 9% of £100, which is about £9 for the year — payable through Self Assessment because your PAYE employer may not be making any deductions (your employed income alone is below the threshold).

If you receive benefits such as Universal Credit alongside part-time work, those benefits are not counted as income for student loan repayment purposes. Our benefits guide explains this in more detail. Similarly, if you are on maternity leave and doing occasional keeping-in-touch (KIT) days, the pay for those days is assessed in the normal per-period way.

Interest and Write-Off Considerations for Part-Time Workers

If you spend several years working part-time and earning below the threshold, you will make little to no repayments during that time. Interest, however, continues to accrue:

• Plan 1: 3.2% per year (fixed for 2026/27)
• Plan 2: 3.2% when earning below the threshold (minimum rate tied to RPI), rising to 6.2% at higher incomes
• Plan 4: 3.2% per year
• Plan 5: 3.2% per year
• Postgraduate Loan: 6.2% per year

For many part-time workers, particularly those on Plan 2 with large balances, the accumulating interest means the total balance grows over time. However, this should not cause alarm if you are on track for write-off. Every year of part-time work brings you one year closer to the write-off date, and any balance remaining at that point — no matter how large — is cancelled without tax consequences. Use our calculator to check whether your current earning trajectory points towards write-off or full repayment.

Transitioning from Part-Time to Full-Time

If your circumstances change and you move from part-time to full-time employment, your student loan deductions will increase to reflect your higher earnings. This happens automatically through PAYE. There is no need to notify the SLC or HMRC — your new employer (or existing employer, if you increase hours) will calculate the correct deduction based on your updated gross pay.

If you are considering moving to full-time work, it is worth understanding how this will affect your take-home pay. On Plan 2, moving from a part-time salary of £20,000 to a full-time salary of £35,000 would mean new annual repayments of 9% × (£35,000 − £29,385) = £505 per year, or about £42 per month. Combined with the additional income tax and National Insurance on the higher salary, the net increase in take-home pay may be less than you expect. Our calculator shows you the complete picture, including tax, NI, and student loan deductions.

Key Takeaways

• Student loan deductions are calculated per pay period — not on your annualised salary.
• Most part-time workers earning under £500 per week will not face any deductions.
• Multiple part-time jobs may result in a Self Assessment bill even if no PAYE deductions were made.
• Zero-hours and seasonal workers only repay in periods when their earnings exceed the threshold.
• Seasonal workers who earn above the monthly threshold in some months but below the annual threshold overall may be entitled to a refund.
• Benefits like Universal Credit are not counted as income for repayment purposes.
• Interest accrues regardless of repayment, but the write-off clock also keeps running.
• Use the student loan repayment calculator to model your specific earnings pattern.