UK Student Loan Repayment & Write-off Calculator
Project your monthly Student Loan deductions, lifelong interest charges, and the exact amount wiped out by the UK Government upon reaching the statutory cancellation deadline. Discover whether your loan acts as a 9% graduate tax and whether making voluntary overpayments saves or wastes your money.
Your Student Loan Plan
Deducted concurrently with your undergraduate loan (total 15% student loan deduction!).
Salary & Current Loan Balance
Total tuition fees + maintenance loan + accrued interest
Master's or Doctoral loan principal + interest
Years passed since April following graduation
Career Trajectory & Inflation
Voluntary Overpayment Sandbox
Test whether making an extra monthly payment or lump sum voluntarily actually saves you money, or whether that money is simply absorbed by the government write-off:
Current Monthly Payment
Projected Write-Off
After 30 years, your remaining balance will be cancelled in full by the government. You will never repay the principal.
On every additional £1 earned above the £27,295 threshold:
Overpayment Verdict: Do Not Overpay
Because you are projected to reach the write-off horizon with an unpaid balance, any extra voluntary payment is effectively wasted. It will not reduce your total lifetime payments. Keep your cash in high-yield savings, ISA, or pension!
Year-by-Year Lifetime Simulation
Detailed projection showing your annual salary, repayments, interest accumulation, and remaining balance over the statutory loan lifetime.
| Year | Age (Est.) | Salary | Threshold | Annual Repaid | Interest Rate | Interest Added | Ending Balance |
|---|
The Complete Truth About UK Student Loans: Debt vs "Graduate Tax"
UK student loans are fundamentally unlike personal loans, credit cards, or mortgages. They function practically as an income-contingent graduate tax. Understanding this distinction is vital to avoid making catastrophic financial mistakes—especially regarding voluntary overpayments.
Income-Contingent Safety Net
If you lose your job, take a career break, earn below your threshold, or become ill, your repayments drop to exactly £0. Debt collectors cannot pursue you, and non-repayment does not affect your credit score.
The Overpayment Trap
Over 75% of Plan 2 graduates will reach the 30-year mark with debt remaining. Paying an extra £10,000 off your balance does not reduce your monthly repayments by a single penny; it merely reduces the amount written off by the Treasury.
Plan 5 Shift (2023+)
For students starting in August 2023 or later, the Government lowered the threshold to £25,000, extended the term to 40 years, but removed real interest (RPI only). Under Plan 5, more than half of graduates will repay in full.
UK Student Loan Plans Comparison Matrix (2024/2025/2026)
| Plan Type | Eligible Cohort | Annual Threshold | Repayment Rate | Cancellation Horizon | Interest Basis |
|---|---|---|---|---|---|
| Plan 2 | England & Wales (2012–2023) | £27,295 | 9% over threshold | 30 Years | RPI up to RPI + 3% |
| Plan 5 | England (Aug 2023 Onward) | £25,000 | 9% over threshold | 40 Years | RPI only (0% real) |
| Plan 4 | Scotland (SAAS students) | £31,395 | 9% over threshold | 30 Years | Lower of RPI or BoE + 1% |
| Plan 1 | Pre-2012 / Northern Ireland | £24,990 | 9% over threshold | 25 Years | Lower of RPI or BoE + 1% |
| Postgraduate | Master's & PhD (Eng/Wales) | £21,000 | 6% over threshold | 30 Years | RPI + 3% |
💡 The Salary Sacrifice Pension Shield
Student loan deductions are calculated on your National Insurance Gross Earnings. If your employer offers a Salary Sacrifice pension scheme, contributing into your pension reduces your contractual gross salary before NI is assessed. A £300/month salary sacrifice pension contribution directly cuts your student loan repayment by £27/month (9%), effectively granting you a 9% bonus discount on your pension funding!
Frequently Asked Questions
Expert answers regarding Student Loan Company policies, interest compounding, and career financial planning.
Why do most financial advisors consider Plan 2 student loans a "graduate tax"? ▼
Because what you repay has zero correlation with how much you borrowed. Whether your balance is £30,000 or £80,000, your monthly deduction is identical: 9% of your earnings above £27,295. Since the entire remaining balance is cancelled after 30 years, the headline debt figure is largely fictional for median earners—it behaves identically to an additional 9% tax bracket.
Who SHOULD pay off their UK student loan early? ▼
Early voluntary overpayment only makes mathematical sense for guaranteed very high earners. For example, if you start your career earning £50,000+ with steep progression (e.g. investment banking, corporate law, elite consulting) and have a small balance, you will inevitably repay the debt in full before the 30-year deadline. In that narrow scenario, paying it off quickly prevents high compounding interest.
Does having a UK student loan hurt my chances of getting a mortgage? ▼
Student loans do not appear on your credit report and do not damage your credit score. However, mortgage lenders will deduct your monthly student loan payment from your net income when assessing your monthly debt affordability, which may slightly reduce your maximum borrowing limit.
How does the 40-year write-off work for Plan 5 students? ▼
Plan 5 was introduced for students starting courses in academic year 2023/24 and later. The write-off horizon was extended from 30 to 40 years, meaning graduates could be repaying until their early 60s. However, the interest rate is capped at RPI with no real interest added.
Is my data private when using this tool? ▼
Yes, 100%. FreeCalcSuite operates entirely client-side inside your browser's local RAM. No personal details, salary, or loan balances are ever sent over the network to any server.