The labyrinthine world of student finance has once again proven its capacity for administrative missteps, with HMRC now confirming errors that have led to hundreds of millions in overpayments. Over the past decade, a staggering £300 million has been collected in error from student loan borrowers, a sum that might prompt a raised eyebrow or two regarding the precision of our national tax collection.
The latest revelations highlight a persistent issue within the system, affecting a significant number of graduates. While the headline figure of 40,000 overcharged graduates has circulated, the underlying data reveals a more complex picture of multiple errors impacting various groups.
What Changed and By How Much
The primary culprit in one specific instance is an HMRC payroll software error. This flaw incorrectly included 'payrolled Benefits in Kind' (BIKs) – specifically those not subject to Class 1 National Insurance Contributions – in the PAYE income declared on self-assessment returns. The consequence? Higher student loan deductions than legally required. This particular error, affecting approximately 16,000 taxpayers, has been ongoing since April 6, 2016, when the payrolling of BIKs was introduced on a voluntary basis.
Beyond this specific BIK issue, other technical and reporting errors have compounded the problem. Around 71,000 Plan 2 student loan customers, representing about 1.3% of current Plan 2 borrowers, have been hit by incorrect interest calculations. This includes instances where the wrong income information was used for interest calculations, and an HMRC income reporting error affecting individuals who derive income from both PAYE and Self Assessment.
The scale of overpayments extends far beyond these specific groups. A Freedom of Information request revealed that over one million people overpaid on their student loans in 2023 alone. This broader issue has left over £28 million in unclaimed overpayments for more than 500,000 students with England-based loans.
Looking at the most recent tax year, 58,532 individuals over-repaid their loans in 2024-25. The legacy of these errors is substantial: as of March 2026, almost 80,000 customers are still awaiting £15 million in refunds, with 36,000 of these outstanding refunds stemming from the 2024-25 tax year.
Scenario: If You Have X This Means Y
- If you receive Benefits in Kind (BIKs) not subject to Class 1 NICs and also complete a Self Assessment tax return: There is a significant chance you have been overcharged on your student loan repayments since April 2016. Your PAYE income, as reported to the Student Loans Company, may have been artificially inflated, leading to higher deductions.
- If you have both PAYE and Self Assessment income and are on a Plan 2 loan: You may have been affected by recent technical issues leading to incorrect interest calculations or income reporting. This could mean you've paid more interest or higher repayments than necessary.
- If you've recently finished your student loan repayments: It is particularly common to overpay in the final months as deductions continue before the Student Loans Company processes the final balance. This is a separate, though equally frustrating, issue that contributes to the millions in overpayments.
What This Means for You
If you believe you might be among the tens of thousands affected by these HMRC errors, or indeed the broader issue of student loan overpayments, it is imperative to check your repayment history. Any refund received, particularly if it's a substantial sum, should be managed carefully. Consider utilising tax-efficient savings vehicles such as a Cash ISA, which allows you to save up to £20,000 per tax year completely free of tax on interest. For first-time buyers under 40, a Lifetime ISA could be an option, offering a 25% government bonus on contributions up to £4,000 per year, effectively adding up to £1,000 annually to your savings. For amounts held outside of ISAs, remember that interest earned on standard savings accounts may be subject to tax above your Personal Savings Allowance (£1,000 for basic rate taxpayers, £500 for higher rate taxpayers).
Step-by-Step: What to Do Right Now
- Review Your Repayment History: Access your online account with the Student Loans Company (SLC). Examine your annual statements and repayment history, paying close attention to the income figures used for calculation.
- Check Your Tax Records: If you complete Self Assessment, cross-reference the income figures reported to HMRC with your P60s and any BIK statements from your employer. Look for discrepancies, particularly regarding payrolled BIKs not subject to Class 1 NICs.
- Contact HMRC: If you suspect an error related to your reported income or BIKs, contact HMRC directly. They are responsible for the accuracy of the income figures they provide to the SLC.
- Contact the Student Loans Company: For any discrepancies in interest calculations or repayment amounts, contact the SLC. They can investigate your account and initiate a refund if an overpayment is confirmed.
- Be Patient: Resolving these issues can take time, given the complexity and the volume of affected individuals. Keep detailed records of all communications.
When Effective
The specific HMRC error regarding payrolled BIKs dates back to April 6, 2016. Other technical and reporting errors are more recent, affecting Plan 2 customers in particular. Overpayments can occur at any point in the repayment cycle, but are especially common towards the end of a loan term.
The Other Side: A System Under Strain
While the figures are stark, it is worth acknowledging the sheer scale of the student loan system. Managing millions of accounts, with varying repayment plans, income sources, and tax statuses, is an immense administrative challenge. HMRC and the Student Loans Company process vast amounts of data annually. However, this does not absolve them of the responsibility to ensure accuracy, particularly when it directly impacts the financial well-being of graduates. The recurring nature of these overpayment issues suggests systemic vulnerabilities that require more robust solutions than simply processing refunds after the fact.
Where to Get Help
- HMRC: For issues related to your reported income, PAYE, or Self Assessment, visit the HMRC website or contact their helpline.
- Student Loans Company (SLC): For queries regarding your loan balance, repayment history, or interest calculations, log into your online SLC account or contact their customer service.
- Citizens Advice: Offers free, independent advice on debt and financial matters.
- Independent Financial Adviser: For guidance on managing any significant refunds, particularly concerning savings and investments.
Sources
- HMRC — Information on payrolled Benefits in Kind error
- Student Loans Company — Data on Plan 2 technical issues
- Freedom of Information Request — Data on over one million overpayments in 2023
- The Telegraph — Coverage on overcharged graduates
This is not financial advice. Seek independent financial guidance. Interest on standard accounts may be subject to tax above your Personal Savings Allowance.