Student Loan Deduction (UK)
A UK payroll deduction for repaying student loans, calculated as a percentage of earnings above a plan-specific threshold and collected by employers through PAYE on behalf of the Student Loans Company.
- What Is a Student Loan Deduction?
- Student Loan Plan Types and Thresholds
- How Student Loan Deductions Are Calculated
- Employer Obligations for Student Loan Deductions
- Interest Rates and Loan Write-Off
- Common Student Loan Deduction Errors
- Handling Employee Questions About Student Loans
- Penalties for Non-Compliance
- Frequently Asked Questions About Student Loan Deductions
What Is a Student Loan Deduction?
Key Takeaways
- ✓Student loan deductions are payroll deductions that UK employers make from employees' earnings to repay student loans, collected through PAYE and forwarded to HMRC, who passes them to the Student Loans Company (SLC).
- ✓The deduction is 9% of earnings above the plan-specific threshold (6% for postgraduate loans), not 9% of total earnings.
- ✓There are five loan plans (Plan 1, 2, 4, 5, and Postgraduate), each with different repayment thresholds and interest rates.
- ✓Employers must start deductions when they receive a Start Notice (SL1 or SL2) from HMRC, not when the employee tells them they have a loan.
- ✓Loans that aren't repaid in full are written off after 25 to 40 years depending on the plan, with the write-off date varying by when the student started their course.
Student loan deductions are how most UK graduates repay their university loans. The money comes out of their salary through the PAYE system, just like income tax and National Insurance. But unlike tax, student loan repayments only start when the graduate earns above a specific threshold. The system is designed to be affordable. Borrowers never pay more than they can manage because the deduction is a percentage of earnings above the threshold, not a fixed monthly amount. Someone earning just above the threshold repays a few pounds a month. Someone earning significantly more repays proportionally more. Employers are the collection mechanism. When HMRC tells an employer that an employee has an outstanding student loan, the employer must start deducting and include the amount in their regular PAYE payments to HMRC. The employer doesn't interact with the Student Loans Company directly. For payroll teams, the main challenge is managing different plan types (each with different thresholds), handling employees with multiple loan types, and processing the deductions correctly alongside tax and NI. Getting it wrong means the employee either overpays (causing frustration) or underpays (leading to HMRC queries).
Student Loan Plan Types and Thresholds
The UK has five student loan plan types, each with different repayment thresholds. The plan type depends on when and where the student studied.
| Plan Type | Who It Applies To | Annual Threshold (2024-25) | Monthly Threshold | Repayment Rate |
|---|---|---|---|---|
| Plan 1 | English/Welsh students before Sept 2012, all NI and some EU students | GBP 22,015 | GBP 1,834 | 9% |
| Plan 2 | English/Welsh students from Sept 2012 onwards | GBP 27,295 | GBP 2,274 | 9% |
| Plan 4 | Scottish students (all years) | GBP 27,660 | GBP 2,305 | 9% |
| Plan 5 | English/Welsh students from Sept 2023 onwards | GBP 25,000 | GBP 2,083 | 9% |
| Postgraduate Loan | Postgraduate Master's or Doctoral loans from 2016 onwards | GBP 21,000 | GBP 1,750 | 6% |
How Student Loan Deductions Are Calculated
The calculation is based on gross earnings in each pay period, not annual salary. Understanding the math prevents common payroll errors.
Basic calculation
For a monthly-paid employee on Plan 2 earning GBP 3,000/month: the monthly threshold is GBP 2,274. Earnings above threshold: GBP 3,000 minus GBP 2,274 = GBP 726. Student loan deduction: 9% of GBP 726 = GBP 65.34, rounded down to GBP 65. Student loan deductions are always rounded down to the nearest whole pound. This is different from tax and NI rounding rules. The rounding ensures employees never pay more than the exact percentage.
Multiple loan types
An employee can have both an undergraduate and a postgraduate loan. In this case, two separate deductions apply. For example, someone earning GBP 3,500/month with Plan 2 and a Postgraduate Loan: Plan 2 deduction is 9% of (GBP 3,500 minus GBP 2,274) = GBP 110. Postgraduate Loan deduction is 6% of (GBP 3,500 minus GBP 1,750) = GBP 105. Total deduction: GBP 215/month. Each deduction is calculated independently against its own threshold. They don't interact with each other.
Irregular payments and bonuses
Student loan deductions apply to all gross earnings in a pay period, including bonuses, commission, and overtime. If an employee normally earns GBP 2,500/month (below the Plan 2 threshold) but receives a GBP 5,000 bonus in December, their December earnings are GBP 7,500. The student loan deduction for December: 9% of (GBP 7,500 minus GBP 2,274) = GBP 470. This can surprise employees who don't expect a large student loan deduction from their bonus. Unlike income tax, there's no annual reconciliation that refunds excess deductions caused by one-off payments.
Employer Obligations for Student Loan Deductions
Employers don't decide whether to start or stop deductions. HMRC controls the process through formal notices.
Starting deductions
HMRC sends the employer a Start Notice (SL1 form) when an employee's student loan deductions should begin. The employer enters the loan plan type into their payroll system and deductions begin from the next available pay period. For new starters, the P45 or starter declaration indicates whether the employee has a student loan. If the starter declaration shows a student loan, the employer begins deductions immediately using the generic start notice rules, even before receiving a formal SL1 from HMRC.
Stopping deductions
HMRC sends a Stop Notice (SL2 form) when the loan has been repaid in full or written off. The employer must stop deductions from the pay period specified on the notice. Employers must not stop deductions just because the employee says their loan is paid off. Only an HMRC Stop Notice authorizes ending deductions. If the employee believes they've overpaid, they should contact the Student Loans Company for a refund, not ask the employer to stop deducting.
Reporting
Student loan deductions are reported to HMRC through the regular FPS as part of RTI reporting. The plan type and deduction amount appear on the FPS for each pay period. The year-end P60 also shows total student loan deductions for the tax year. Any discrepancy between FPS-reported deductions and PAYE payments will trigger HMRC inquiries.
Interest Rates and Loan Write-Off
Student loan interest and write-off rules differ significantly between plan types. These details affect employees' financial planning, even though they don't change the payroll calculation.
Interest rates by plan
Plan 1: the lower of RPI or the Bank of England base rate plus 1%. Plan 2: RPI plus up to 3% depending on income (graduates earning above GBP 49,130 pay RPI + 3%). Plan 4: the lower of RPI or the Bank of England base rate plus 1%. Plan 5: RPI only (capped at RPI, no additional percentage). Postgraduate Loan: RPI plus 3%. Interest accrues from the day the loan is paid out, not from graduation. For Plan 2, interest accumulates during study at RPI + 3%, which means the balance can be significantly higher at graduation than the original borrowing.
Write-off periods
Plan 1: written off at age 65 (or 25 years after the first April following graduation for those who started after 2006). Plan 2: written off 30 years after the first April the borrower became eligible to repay. Plan 4: written off 30 years after first becoming eligible, or at age 65 (whichever comes first, depending on when the loan was taken). Plan 5: written off 40 years after the first April the borrower became eligible. Postgraduate Loan: written off 30 years after the first April of eligibility. Written-off amounts are not treated as taxable income.
Common Student Loan Deduction Errors
Payroll teams make predictable mistakes with student loan deductions. Here are the most frequent ones and how to avoid them.
- Wrong plan type: applying Plan 1 thresholds to a Plan 2 borrower (or vice versa) is the most common error. Always use the plan type specified on the HMRC Start Notice or starter declaration. If unclear, process as Plan 1 until HMRC confirms otherwise.
- Rounding up instead of down: student loan deductions must be rounded down to the nearest whole pound. Rounding up means the employee overpays. While the amounts are small per pay period, they compound over a year.
- Deducting from the full salary: the deduction is 9% of earnings above the threshold, not 9% of total earnings. This distinction makes a major difference. On GBP 30,000/year (Plan 2), the correct annual deduction is about GBP 243, not GBP 2,700.
- Continuing deductions after receiving a Stop Notice: once HMRC issues a Stop Notice, deductions must cease from the specified date. Continuing to deduct results in employee overpayments that are difficult to reclaim from the SLC.
- Not deducting from bonuses and overtime: all gross earnings in a pay period are subject to student loan deductions if they take the total above the threshold. Excluding bonus payments is a compliance error.
- Forgetting to report the plan type on the FPS: the FPS must show the loan plan type for each employee. Missing this field can cause HMRC reconciliation issues.
Handling Employee Questions About Student Loans
Employees frequently ask payroll teams questions about their student loan deductions. Here's what you can and can't answer.
Questions payroll can answer
How much was deducted this month and why (show the calculation). What plan type is being used (based on HMRC's instruction). What the threshold is for their plan. How the deduction was calculated for a specific pay period, including bonus months. Where to find student loan deductions on their P60.
Questions to redirect to SLC or HMRC
What's my outstanding loan balance? (SLC only has this information.) Why am I still being deducted when I think my loan is paid off? (The employee should contact SLC to request a Stop Notice through HMRC.) Can I make voluntary overpayments? (Yes, but directly to SLC, not through payroll.) When will my loan be written off? (SLC manages write-off dates.) Can I switch plan types? (No, the plan is determined by when and where the student studied.)
Penalties for Non-Compliance
Student loan deductions are treated as part of PAYE, so non-compliance carries the same penalty framework as other PAYE failures.
Failure to deduct
If an employer doesn't make student loan deductions after receiving a Start Notice from HMRC, the employer becomes liable for the shortfall. HMRC can raise a determination for the unpaid amount, and the employer must pay it. Unlike income tax shortfalls, the employer can't recover student loan deductions from future salary (unless the employee agrees). This makes non-deduction a direct cost to the business.
Late payment penalties
Student loan deductions are included in the monthly PAYE payment to HMRC. Late PAYE payments attract the standard penalty structure: first default in a tax year is penalty-free, subsequent defaults attract 1% to 3% penalties depending on the number of late payments. Interest accrues on all late amounts from the due date. The PAYE payment deadline is the 22nd of the following month (electronic) or 19th (postal).
Frequently Asked Questions
Can an employee opt out of student loan deductions through payroll?
What happens to student loan deductions during maternity leave?
Are student loan deductions taken before or after tax?
What if an employee has a Scottish student loan (Plan 4) but works in England?
Do employers need to know the employee's outstanding loan balance?
Can student loan deductions reduce an employee's pay below the National Minimum Wage?
Written by Adithyan RK