What is Student Loan Repayment Calculator (UK)?
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UK student loans are income-contingent repayment loans administered by the Student Loans Company (SLC). Unlike traditional loans, repayments are not fixed — they are calculated as a percentage of income above a repayment threshold, deducted automatically through the PAYE system or Self Assessment. There are currently four repayment plans. Plan 1 applies to students who started their course in England or Wales before 1 September 2012, or in Northern Ireland: repayments are 9% on income above £22,015 per year (2024/25) and outstanding balances are written off after 25 years. Plan 2 applies to English or Welsh students who started from September 2012 onwards: repayments are 9% on income above £27,295 per year, with write-off after 30 years. Plan 5 is for English students who started from August 2023 onwards under the new Lifelong Learning Entitlement (LLE): 9% on income above £25,000, with write-off after 40 years. Postgraduate Loan (PGL) repayments are 6% on income above £21,000 per year, written off after 30 years. If you have both a Plan 2 and a Postgraduate Loan, you pay 9% + 6% = 15% of income above the respective thresholds simultaneously. Interest accrues on student loan balances — the rate varies by plan and income. Crucially, many graduates (especially from Plan 2 and Plan 5) are projected never to repay their full balance before write-off. The repayment system functions more like a graduate tax than a conventional loan for these borrowers.
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Formula
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Monthly repayment = max(0, (annual_income − threshold) / 12) × rate. Plan 1: 9% above £22,015. Plan 2: 9% above £27,295. Plan 5: 9% above £25,000. PGL: 6% above £21,000.How to Student Loan Repayment Calculator (UK)
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- 1Identify your student loan plan: Plan 1 (pre-2012), Plan 2 (2012–2022 English/Welsh), Plan 5 (2023+ English), Postgraduate Loan
- 2Find your annual income — repayments are based on gross income before tax (salary, self-employment profit, and some other income)
- 3Calculate annual repayment: 9% (or 6% for PGL) of income above the applicable threshold
- 4Divide annual repayment by 12 (or 52 for weekly pay) for the monthly (or weekly) deduction via PAYE
- 5If income drops below the threshold at any point, repayments stop automatically and resume when income rises above the threshold again
- 6Interest accrues on the outstanding balance throughout — Plan 2 interest is RPI + up to 3% while studying, then RPI + 0–3% depending on income
- 7After the write-off period (25, 30, or 40 years depending on plan) the remaining balance is cancelled, regardless of how much is owed
Worked Examples
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9% × (£35,000 − £27,295) = 9% × £7,705 = £693.45/year
Repayments are modest at this income level. The £27,295 threshold means only the income above that is subject to the 9% deduction.
9% × (£28,000 − £22,015) = 9% × £5,985 = £538.65/year
Plan 1 has a lower repayment threshold than Plan 2, so repayments start earlier and are slightly higher at equivalent salaries.
Plan 2: 9% × (£45,000 − £27,295) = £1,593; PGL: 6% × (£45,000 − £21,000) = £1,440
Both loans are repaid simultaneously from the same income. The combined deduction is 15% on income above £27,295 (Plan 2 threshold) — a significant monthly deduction.
9% × (£30,000 − £25,000) = 9% × £5,000 = £450/year
Plan 5 has a lower threshold than Plan 2 but a much longer 40-year write-off period. Most borrowers on Plan 5 will repay more in total over their lifetime.
Real-World Applications
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Calculating monthly student loan deductions at a given salary to estimate take-home pay, representing an important application area for the Uk Student Loan Calc in professional and analytical contexts where accurate uk student loan calculations directly support informed decision-making, strategic planning, and performance optimization
Deciding whether to make voluntary overpayments on a student loan, representing an important application area for the Uk Student Loan Calc in professional and analytical contexts where accurate uk student loan calculations directly support informed decision-making, strategic planning, and performance optimization
Modelling how a salary increase affects both student loan repayments and income tax, representing an important application area for the Uk Student Loan Calc in professional and analytical contexts where accurate uk student loan calculations directly support informed decision-making, strategic planning, and performance optimization
Planning for salary sacrifice benefits that reduce gross income and therefore loan repayments, representing an important application area for the Uk Student Loan Calc in professional and analytical contexts where accurate uk student loan calculations directly support informed decision-making, strategic planning, and performance optimization
Estimating total repayments over a career to decide between loan plans (e.g., for postgraduate study), representing an important application area for the Uk Student Loan Calc in professional and analytical contexts where accurate uk student loan calculations directly support informed decision-making, strategic planning, and performance optimization
Special Cases
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Certain complex uk student loan scenarios may require additional parameters
Certain complex uk student loan scenarios may require additional parameters beyond the standard Uk Student Loan Calc inputs. These might include environmental factors, time-dependent variables, regulatory constraints, or domain-specific uk student loan adjustments materially affecting the result. When working on specialized uk student loan applications, consult industry guidelines or domain experts to determine whether supplementary inputs are needed. The standard calculator provides an excellent starting point, but specialized use cases may require extended modeling approaches.
Salary Sacrifice and Student Loans
In the Uk Student Loan Calc, this scenario requires additional caution when interpreting uk student loan results. The standard formula may not fully account for all factors present in this edge case, and supplementary analysis or expert consultation may be warranted. Professional best practice involves documenting assumptions, running sensitivity analyses, and cross-referencing results with alternative methods when uk student loan calculations fall into non-standard territory.
Self-Employment and Student Loans
{'title': 'Self-Employment and Student Loans', 'body': "Self-employed borrowers repay through Self Assessment rather than PAYE. Repayments are due by 31 January each year on the prior tax year's profit. Interest continues to accrue in the meantime."}. In the Uk Student Loan Calc, this scenario requires additional caution when interpreting uk student loan results. The standard formula may not fully account for all factors present in this edge case, and supplementary analysis or expert consultation may be warranted. Professional best practice involves documenting assumptions, running sensitivity analyses, and cross-referencing results with alternative methods when uk student loan calculations fall into non-standard territory.
Scottish Students
In the Uk Student Loan Calc, this scenario requires additional caution when interpreting uk student loan results. The standard formula may not fully account for all factors present in this edge case, and supplementary analysis or expert consultation may be warranted. Professional best practice involves documenting assumptions, running sensitivity analyses, and cross-referencing results with alternative methods when uk student loan calculations fall into non-standard territory.
Employer Student Loan Contributions
{'title': 'Employer Student Loan Contributions', 'body': "Some employers offer student loan contributions as part of salary sacrifice arrangements. These are paid directly to the SLC and treated as employer contributions, reducing both employer NI and potentially the employee's loan balance more quickly."}. In the Uk Student Loan Calc, this scenario requires additional caution when interpreting uk student loan results. The standard formula may not fully account for all factors present in this edge case, and supplementary analysis or expert consultation may be warranted. Professional best practice involves documenting assumptions, running sensitivity analyses, and cross-referencing results with alternative methods when uk student loan calculations fall into non-standard territory.
UK Student Loan Plans 2024/25
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| Plan | Who It Covers | Threshold | Rate | Write-off |
|---|---|---|---|---|
| Plan 1 | Pre-2012 English/Welsh starters; NI students | £22,015/yr | 9% | 25 years |
| Plan 2 | 2012–2022 English/Welsh starters | £27,295/yr | 9% | 30 years |
| Plan 5 | 2023+ English starters (LLE) | £25,000/yr | 9% | 40 years |
| Postgraduate Loan | Master's/doctoral loans | £21,000/yr | 6% | 30 years |
| Scottish loans | Scottish students | £27,660/yr | 9% | 30 years (in Scotland) |
Frequently Asked Questions
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How do UK student loan repayments work?
Repayments are based on income, not the loan balance — you pay a percentage of earnings above a threshold: Plan 1 (pre-2012): 9% of income above £22,015/year. Plan 2 (post-2012): 9% above £27,295. Plan 4 (Scotland): 9% above £27,660. Plan 5 (post-2023): 9% above £25,000. For a Plan 2 borrower earning £35,000: (£35,000 − £27,295) × 9% = £693.45/year or £57.79/month. Repayments are deducted through PAYE (like tax) or paid through self-assessment. The remaining balance is written off after 30 years (Plan 2) or 25 years (Plan 1).
Is it worth repaying UK student loans early?
For most Plan 2 borrowers, no — because the loan is written off after 30 years and only 17% of graduates are expected to repay in full. If you won't clear the balance before write-off, extra payments are effectively wasted money. However, early repayment makes sense if: you're a high earner who will repay the full balance well before 30 years (typically £50,000+ salary), you have Plan 1 (lower threshold, most will repay fully), or the psychological burden of debt outweighs the financial logic. Think of Plan 2 repayments as a temporary graduate tax rather than a traditional debt.
Do UK student loans affect my mortgage application?
Yes, but through affordability, not credit scoring. Student loans don't appear on your credit report and don't affect your credit score. However, mortgage lenders include your monthly student loan repayment in their affordability assessment, reducing the maximum mortgage you can borrow. A Plan 2 borrower earning £40,000 pays £95/month in loan repayments — lenders deduct this from your available income, potentially reducing your maximum mortgage by £15,000-£25,000 depending on the lender's affordability model.
What are the different UK student loan repayment plans and their thresholds?
UK student loans are categorised into different repayment plans based on when and where you studied. For example, Plan 2 applies to students who started their course in England or Wales from September 2012 onwards, with a current repayment threshold of £27,295 per year. Plan 1 applies to students who started their course before September 2012, with a threshold of £22,015. Repayments for all plans are calculated as 9% of income above their respective thresholds, while Postgraduate Loans have a separate threshold of £21,000 and a 6% repayment rate.
When are UK student loans written off or cancelled?
UK student loans are written off after a set period, regardless of the amount repaid. For Plan 2 and Postgraduate Loans, this typically occurs 30 years after the April you were first due to repay. Plan 1 loans are generally cancelled after 25 years. In specific circumstances, such as permanent disability or death, the Student Loans Company can also cancel the loan earlier.
Common Mistakes to Avoid
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- !Worrying about student loan debt as if it were a conventional loan — for most Plan 2/5 borrowers the unpaid balance will be written off
- !Making extra voluntary repayments on a Plan 2 loan without first confirming you are on track to repay in full — over-paying can be a poor financial decision
- !Forgetting that multiple loan plans accrue repayments simultaneously — combined deductions can be 15% or more of income above the thresholds
- !Not notifying the SLC when moving abroad, which can lead to accumulation of arrears
- !Assuming salary sacrifice does not affect student loan repayments — it reduces gross income on which repayments are based
- !Confusing Plan 1 and Plan 2 thresholds — they differ by over £5,000/year and affect monthly take-home
Pro Tip
Before making voluntary overpayments on a student loan, use an online repayment calculator to project your balance. If your projected salary growth suggests you will not repay the balance before write-off, those overpayments are financially wasteful — invest them instead.
Did you know?
The £9,250 annual tuition fee cap in England has not changed since 2017. When adjusted for inflation, UK universities receive roughly 20% less in real terms per student than at the fee cap introduction, while the student debt mountain continues to grow.
References
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