The graduate debt trap

England's student loan book is £268.5 billion. A third of graduates would have been better off not going.

April 2026 · Sources verified March 2026

£268.5bn
Outstanding student debt (England)
1 in 3
Graduates with negative financial return
51%
Marginal tax rate above £50,270

How the loan system actually works

Tony Blair set a target: 50% of young people in higher education. David Willetts built the fee structure around it. The idea was that graduates would earn more, repay from those higher earnings, and the state would carry the rest. Both parties backed it. Neither costed it honestly.

Interest starts accruing at RPI + 3% while a student is still in lectures. The SLC charged 6.2% on loans in 2025-26. The Bank of England base rate was 4.5%. The government's own forecasts expect to write off 32p of every £1 lent. The outstanding debt stock is projected to peak at £492 billion.

The 2010 Browne Review recommended a lower rate, RPI + 2.2%, with interest rebates for low earners. The government adopted the rate structure but dropped the rebates. It kept the mechanism that collected money and removed the one that protected borrowers who weren't earning enough to cope with compound interest.

Martin Lewis called this "not moral." Kemi Badenoch called student loans "a scam." They don't agree on much else.

£15.2 billion in interest accrues on the loan book each year. £5 billion is collected in repayments. Labelling the arrangement a "loan" keeps it off the public balance sheet. That is the main reason it is structured this way.

SLC Annual Report FY2024-25
Annual interest accrued vs repayments collected
Interest accruing
£15.2bn
Repayments
£5.0bn
For every £1 collected, £3 of interest accrues. Source: SLC Annual Report FY2024-25.

Plan 2 borrowers (post-2012) now owe an average of £48,470. Most will never clear the balance. The system was designed that way. After 30 years the debt is written off. The government books a loss decades from now, which is convenient for today's Chancellor. The 22-year-old graduate, meanwhile, spends their best earning years with 9% taken from every pound above £27,295.


Returns by subject: £500,000 to minus £169,000

The IFS measured lifetime earnings for graduates against similar people who did not go to university. Medicine adds roughly £500,000. Economics adds £320,000. Creative arts subtracts £169,000. The range is enormous and the information is freely available, but it reaches almost nobody at the point when they're choosing a course.

Estimated lifetime earnings return vs similar non-graduates (men)
Medicine
+£500,000
Economics
+£320,000
Law
+£240,000
Engineering
+£200,000
Computing
+£150,000
Business
+£110,000
Education
+£10,000
English
−£50,000
Sociology
−£70,000
Creative arts
−£169,000
Source: IFS 2020 (R167). Returns estimated relative to similar individuals who did not attend university. Male graduates. Women's returns follow a similar distribution.
Median graduate salary at 15 months post-graduation
SubjectSalary
Medicine & Dentistry£46,700
Economics£40,000
Engineering£33,000
Computing£32,000
Business£28,500
Education£26,000
English£25,000
Fine Arts£23,825
Full-time NLW (comparison)£24,784

Source: HESA Graduate Outcomes 2022/23. NLW calculated at £12.71/hr × 37.5hrs × 52wks = £24,784.50 (2026-27 National Living Wage rate).

A Fine Arts graduate, 15 months out of university with roughly £50,000 of debt, earns a median of £23,825. That is £960 less than the £24,784 a full-time worker on the National Living Wage takes home, no degree required.

Fifteen months is early. Creative careers take time to build. But the IFS lifetime data tells the same story over decades: for these subjects, the degree subtracts value rather than adding it.

The mean graduate does earn a positive return, roughly £100,000 over a lifetime. But that average is heavily skewed by medicine, economics and law. Strip those out and the picture changes. The IFS estimates that up to 1 in 3 graduates see a negative return. All of this is published data. None of it appears in a UCAS prospectus.

The graduate surcharge

Student loan repayments appear on the payslip next to income tax and National Insurance. Technically they are loan repayments, not a tax, and they're written off after 30 years. In practice, most Plan 2 borrowers will repay for the full 30 years without clearing the balance. The 9% is simply gone from their pay packet, month after month, for most of their working life.

Cumulative marginal deductions at £55,000
Income tax
40%
National Insurance
2%
Student loan
9%
Total
51%
A Plan 2 graduate earning £55,000 keeps 49p of every pound above £50,271. Source: HMRC 2026-27 rates, SLC.
Income bandIncome taxNIStudent loanTotal
Up to £12,5700%0%0%0%
£12,571 – £27,29520%8%0%28%
£27,296 – £50,27020%8%9%37%
£50,271 – £100,00040%2%9%51%
£100,001 – £125,14060%2%9%71%
Above £125,14045%2%9%56%

Plan 2 borrower (post-2012). Income tax personal allowance taper between £100k–£125,140 creates effective 60% rate. Sources: HMRC 2026-27 rates, SLC.

Between £100,000 and £125,140, a Plan 2 graduate keeps 29p of every extra pound earned. The personal allowance taper, National Insurance and the 9% loan repayment stack on top of each other.

150,450 borrowers now owe over £100,000. That figure is up 33% in six months. The growth comes from interest capitalising on interest, not from new borrowing.

Royal London FOI, June 2025

Of 8.6 million total borrowers, 1.7% owe £100k+. The majority are postgraduate borrowers, but interest capitalisation is the primary driver of growth.


Twice as many firsts, same entry grades

The domestic tuition fee has been frozen at £9,250 since 2017. Inflation has eroded roughly 30% of its real value since 2012. Universities responded in two ways: inflating grades and recruiting more international students. They did not, on the whole, cut costs.

First-class degrees awarded (% of all degrees)
2010
15.8%
2015
~22%
2020
37.4%
2022
32.8%
2024
28.8%
Pandemic peak of 37.4% in 2020. Post-pandemic correction ongoing, but still nearly double the 2010 rate. Source: Office for Students, January 2026. 39% of the increase is statistically unexplainable by changes in student characteristics.

In 2010, 6.7% of students who entered university with DDD at A-level went on to get a first. By 2023 that figure was 24.4%, a 264% increase. These are students with the lowest entry grades, and they are now four times more likely to leave with the highest classification. The Office for Students says 39% of the overall increase in firsts cannot be explained by changes in who is studying or what they're studying. It offers no alternative explanation.

AI and the broken exam

Grade inflation was already a problem before generative AI arrived and made it worse. A PLOS ONE study found that ChatGPT exam answers went undetected 94% of the time and scored higher than real students. An estimated 88% of students now use AI for assessments. Essay mills were criminalised in June 2022, but universities still logged nearly 7,000 AI misconduct cases in 2023-24.

The three-year, essay-based assessment model was built for a world where producing a passable essay required effort. That world no longer exists, and universities have not adapted to the one that replaced it.

Sources: PLOS ONE, June 2024 (detection study). HEPI/Jisc survey 2024 (88% usage). QAA 2024 (misconduct cases).

The international fee dependency

What follows is about university management, not about the students themselves. International students respond to the incentives on offer; anyone would. The question is why institutions built a financial model so fragile that a single policy change could wreck it.

International student fees now account for £11.8 billion, or 23% of all university income. One in six universities draws more than a third of its revenue from overseas. When the government tightened visa rules in 2024, 45% of universities went into deficit.

International student fee income (£bn)
2010
£4.7bn
2016
£5.2bn
2019
£7.5bn
2022
£10.0bn
2023
£11.8bn
Fee income from non-UK students more than doubled in 13 years. Source: HESA Finance Data.

Investing in domestic skills

International students who meet genuine language standards and pay for a genuine education are an asset. They contribute £41.9 billion to the UK economy. The problem is a system that treats them as revenue and domestic students as collateral.

IELTS 6.0 is the stated minimum for admission. The BBC, HEPI and university staff describe it as routinely gamed. The HEPI report "Hidden in Plain Sight" is a qualitative study based on anonymous academics; its findings are corroborated by the BBC's investigation and QAA misconduct data.

A university sector that collapses when visa rules change was running on borrowed time, and the bill came due in 2024. If the government is serious about sustainability it could start with apprenticeships, trades and decent career advice for the 18-year-old in Sunderland who currently gets told university is the only respectable option.

The median vice-chancellor earns £340,901. In 2024-25, universities cut 13,300 jobs while spending £303.3 million on severance packages. Across the sector, 10,447 staff earn over £100,000. Whether this represents value for money is a question the sector prefers not to ask in public.

Sources: THE VC pay survey 2023-24. OfS Financial Sustainability report, November 2025. HESA Finance 2022-23 (international fees).


The recruitment pipeline

The system enables a pathway. We don't know how many follow it end to end, because the Home Office doesn't publish that data. But each step is documented and each incentive points the same direction.

A foreign student is recruited with IELTS 6.0 (component scores of 5.5 accepted at many institutions). They graduate with an inflated degree from a system where nearly a third of awards are firsts. They move into care work, which sits on the shortage occupation list, and remain in the UK. After five years they qualify for Indefinite Leave to Remain. At pension age, Pension Credit provides £11,809 per year after £18,600 in National Insurance contributions.

Pension Credit is means-tested. Not every ILR holder will claim it. But for those who do, the arithmetic stands.

The domestic graduate who funded this system through 35 years of NI contributions totalling £220,000 receives a state pension of £11,973. That is 8% of the contributions for 98.6% of the pension.

35 years of NI. £220,000 paid. Pension: £11,973.
Five years of NI. £18,600 paid. Pension Credit: £11,809.
The gap is £164 per year.

HMRC NI rates / DWP Pension Credit 2025-26

Everyone in this chain gets what they need except the domestic student. Universities bank the fees. Care homes fill their rotas without raising wages. The Treasury avoids spending on apprenticeships. And the 22-year-old from Middlesbrough who took on £50,000 of debt on the strength of a prospectus? They're still repaying it at 40.

A median electrician, incidentally, earns £39,039 a year with no student debt at all. Schools don't tend to bring this up at careers day.

Source: ONS Annual Survey of Hours and Earnings 2025.

An 18-year-old deserves this information before they sign. Most don't get it.

GBTT · Data changes arguments

Sources

Student Loans Company
Institute for Fiscal Studies
  • IFS Report R167, "The impact of undergraduate degrees on lifetime earnings" (2020): subject-level returns, creative arts figure. ifs.org.uk
  • IFS 2021 briefing: proportion of graduates with negative returns.
Office for Students
  • OfS, "Analysis of degree classifications over time" (January 2026): firsts 15.8% to 28.8%, unexplained grade inflation. officeforstudents.org.uk
  • OfS, "Grade inflation and entry qualifications" (September 2024): DDD-to-first progression, 264% increase.
  • OfS, "Financial Sustainability of the HE Sector" (November 2025): 45% in deficit, job losses, severance costs.
HESA / Higher Education Statistics Agency
  • HESA Graduate Outcomes 2022/23: median salary by subject at 15 months. hesa.ac.uk
  • HESA Finance Data 2022-23: international fee income £11.8bn, 23% of total. hesa.ac.uk/finances
HMRC
  • HMRC Income Tax rates and thresholds 2026-27: personal allowance taper, NI rates. gov.uk/income-tax-rates
  • HMRC NI contribution rates: used for pension pipeline calculations.
DWP
  • DWP Pension Credit rates 2025-26: £11,809/year guarantee credit for single person. Pension Credit is means-tested; not all eligible individuals claim.
  • State Pension full rate 2025-26: £11,973/year (new state pension).
ONS
  • Annual Survey of Hours and Earnings 2025: median electrician salary £39,039. ons.gov.uk
Royal London
  • Royal London FOI analysis (June 2025): 150,450 borrowers owing £100k+, 33% increase in 6 months.
HEPI / Academic Research
  • PLOS ONE, June 2024: ChatGPT exam answers undetected 94% of the time. plos.org
  • HEPI/Jisc Student Academic Experience Survey 2024: 88% AI usage in assessments.
  • QAA Academic Integrity Advisory 2024: ~7,000 AI misconduct cases in 2023-24.
  • HEPI, "Hidden in Plain Sight": qualitative report based on anonymous academics, corroborated by the BBC investigation and QAA misconduct data.
DfE / Department for Education
  • DfE Student Loan Forecasts 2024-25: 32p RAB charge (resource accounting and budgeting). gov.uk
  • DfE: projected debt stock peak £492 billion.
Parliamentary / Other
  • Browne Review, "Securing a Sustainable Future for Higher Education" (2010): RPI + 2.2% recommendation with rebates. gov.uk
  • Times Higher Education VC Pay Survey 2023-24: median £340,901, 10,447 staff earning £100k+. timeshighereducation.com
  • UCAS / Universities UK: international student economic contribution £41.9bn.
  • BBC investigation into English language standards at UK universities.