Umbrella/Inside-IR35 Student Loan Calculator
Calculate student loan deductions for contractors working through umbrella companies or inside IR35. Understand the impact on your take-home pay and plan accordingly.
Contractor Student Loans
Student loan treatment varies significantly between umbrella companies and IR35 arrangements.
Weekly assignment: £2,500
Working through umbrella company (inside IR35)
Typical range: £15-£25 per week
Student Loan Declaration
Assumes 4 weeks holiday/unpaid
Quick Summary
Outcome: repaid in full
£139 a weekly, collected through payroll
£6,672 over 48 weeks, against a full-year liability of £6,470.55.
Payroll took £201 MORE than the annual rules require, because 48 weeks of work gets 48 pay-period thresholds instead of one whole annual threshold. Self Assessment does not refund it — ask the Student Loans Company for a refund of over-repayment.
Student loan on this contract, 2026-27
Student loan per weekly
£139
Plan 2, rounded down to whole pounds
Gross pay per weekly
£2,110
After £390 of employer costs
Full-year liability
£6,470.55
On £101,280 over 48 weeks
How this is worked out
(£2,110.00 − £565) × 9% = £139
Plan 2, HMRC's published weekly threshold for 2026-27, rounded down to a whole pound as payroll rules require[source].
How this is worked out
(£101,280 − £29,385) × 9% = £6,470.55
The same income on a Self Assessment return: one annual threshold instead of 48 separate pay periods.
How this is worked out
£6,470.55 − £6,672 = £0.00
What would be left to settle on 31 January 2028 if you file a Self Assessment return for this income.
How this is worked out
£500 × 5.00 = £2,500.00
Assignment income for one weekly period: 5 days a week.
Rates, assumptions and sources
Every figure below is the 2026-27 published figure, read from this site's single source of truth at page-render time[source]. The 6% Plan 2 and Postgraduate interest cap covers the 2026/27 year only and is not assumed to continue[source].
| Plan | Threshold | Rate | Interest | Written off | Threshold freeze |
|---|---|---|---|---|---|
| Plan 2 | £29,385[source] | 9% | 4.1% to 7.1% by income, capped at 6% for 2026-27[source] | 30 years[source] | Frozen at £29,385 until April 2030 |
Write-off is counted from the April after the course ends, not from the course-end date itself, and the Plan 2 interest bands (£29,385 lower, £52,885 upper) are frozen alongside the Plan 2 repayment threshold.
This calculator also assumes
- Arrangement
- Umbrella Company
- Student loan through payroll
- Yes
- Per-period thresholds
- HMRC's published weekly/monthly figures, floored
- Per-period rounding
- Each deduction rounded down to a whole pound (HMRC CWG2)
- Weeks worked
- 48 of 52
- Employer NI and levy
- Taken from the assignment rate
Growth, inflation and long-run interest figures are assumptions, not published rates. Change them and the projection changes.
Weekly Payslip Breakdown
Income
Employer Costs (Deducted from Assignment Rate)
Employee Deductions
Take-Home Analysis
Total Deduction Rate: 48.5% of assignment rate
Student Loan Impact: £139 per weekly
Annual Projections (48 weeks)
Annual Figures
Self Assessment Equivalent
Monthly average net: £5,151
IR35 & Student Loan Treatment
Umbrella Company
Working through umbrella company (inside IR35)
Student Loan Handling: PAYE deductions - automatic weekly/monthly
Recommendations
- Ensure umbrella company has correct SL plan details
- Check first payslip for accurate deductions
- Keep payslips for year-end reconciliation
- No Self Assessment needed for student loans, as long as this is your only income
Key Features
- Automatic PAYE processing
- Weekly/monthly deductions
- No Self Assessment needed for SL
- Predictable deductions
- Umbrella handles compliance
Comparison: Umbrella vs Outside IR35
| Aspect | Umbrella (Current) | Outside IR35 Ltd Co |
|---|---|---|
| Student Loan Deductions | £6,672/year Automatic PAYE | £6,471/year Via Self Assessment |
| Payment Timing | Weekly/Monthly | Annual (31 Jan) |
| Flexibility | Low | High |
| Administration | Simple | Complex |
Understanding Contractor Student Loans
Umbrella Company Treatment
- • Treated as employed for PAYE purposes
- • Automatic student loan deductions
- • Weekly or monthly deductions
- • Must declare student loan plan to umbrella
- • No Self Assessment needed for SL
IR35 Fee-Payer Issues
- • Agencies should NOT deduct student loans
- • Often try to deduct incorrectly
- • Must tell agency to ignore SL1 notices
- • Pay via Self Assessment instead
- • Budget for annual payment
Key Planning Points
Umbrella company choice:
Student loan deductions of £139 per weekly significantly impact your take-home pay. Factor this into your rate negotiations.
Declaration importance:
Always declare your student loan plan correctly. Incorrect information leads to wrong deductions and year-end reconciliation issues.
IR35 status impact:
Your IR35 status fundamentally changes how student loans are handled. Inside IR35 = PAYE deductions. Fee-payer arrangements = Self Assessment required.
Need Help with Contractor Student Loans?
Understanding how student loans work for contractors is crucial for financial planning. Get professional guidance on your specific situation.
Related student loan calculators
The umbrella and inside-IR35 PAYE calculator answers one specific question. For the full picture, start with our UK student loan calculator on the homepage, work out what leaves your payslip each month with the monthly repayment calculator, or check what you can borrow with the student finance calculator. Every tool on the site is listed in the UK student loan calculator directory.
- CIS and self-employed calculator: student loan for construction industry and self-employed workers
- self-employed student loan calculator: what you owe through Self Assessment rather than PAYE
- SL1/SL2 notice and tax code simulator: what an HMRC start or stop notice does to your payroll