The average Plan 2 student loan balance is around £43,000. Under the newer Plan 5, the expected average is closer to £54,000. Those numbers look terrifying, but understanding how student loans actually work changes the perspective entirely.
Student loans in the UK are not like other debts. You do not need to pay them back until you earn above a certain threshold, and if you do not ever earn above that threshold, you never pay them back. There is no credit check. They do not require security. You cannot be pursued for arrears in the traditional sense. For most young people, a student loan is less a debt you must repay and more a tax on earnings above a certain level.
But there are choices to make about repayment, and the maths around early repayment are counterintuitive. Here is what actually matters.
The Three Plans
If you started university before September 2012, you are on Plan 1 (£27,000 tuition cap, lower interest rates, repay for longer).
If you started between September 2012 and July 2023, you are on Plan 2 (£9,000 then £9,250 tuition fee, 3% interest above RPI inflation, 30-year write-off).
If you started university in August 2023 onwards, you are on Plan 5 (£9,250 tuition fee, RPI inflation only, 40-year write-off but lower threshold to start repayment).
That last bit is crucial. Plan 5 has a higher maximum repayment because you start repaying at lower incomes, but the interest is purely inflationary. Most Plan 2 borrowers will never repay their loan in full. Most Plan 5 borrowers probably will.
How Repayment Works
You only make payments if you earn above the repayment threshold. In April 2024:
Plan 1: £12,538 per year (£1,045 per month). 9% of everything above that.
Plan 2: £27,627 per year (£2,302 per month). 9% of everything above that.
Plan 5: £22,015 per year (£1,835 per month). 9% of everything above that.
For someone earning £35,000 a year:
Plan 1: £35,000 – £12,538 = £22,462. 9% of that = £2,021 per year (£168 per month).
Plan 2: £35,000 – £27,627 = £7,373. 9% of that = £663 per year (£55 per month).
Plan 5: £35,000 – £22,015 = £12,985. 9% of that = £1,169 per year (£97 per month).
Student loan repayments are taken via PAYE (Pay As You Earn). Your employer handles it. You do not see the money.
Interest and Writeoff
Student loans accrue interest. For Plan 2, that is RPI (Retail Price Index) inflation plus 3%. On a £43,000 loan, with average earnings growth, interest will continue building faster than repayments reduce the balance, especially in the early years.
But here is the thing that changes the calculation: if you do not fully repay your loan, it is written off after a set period. For Plan 2, that is 30 years from graduation. For Plan 5, it is 40 years.
For most people, especially women (who statistically earn less over a lifetime), the loan will be written off rather than repaid.
This fundamentally changes whether early repayment makes sense.
Should You Repay Early?
This is where the counterintuition kicks in.
If you have extra cash and are considering paying off your student loan, ask yourself: “Will I definitely earn enough over my remaining repayment years to repay the full balance anyway?”
If the answer is no, paying it off early does not make financial sense. You are paying money today to clear a debt that might never be repaid anyway. You are trading money now for an unclearness in the future.
If the answer is yes, and you are certain of sustained high earnings, it can make sense depending on interest rates and opportunity cost.
The key insight: the loan is not a moral obligation to repay. It is a conditional financial arrangement. Repay if it makes financial sense. Do not repay if it does not.
Tax and Benefits
Student loan repayments are not tax deductible. You pay tax on your gross income, then your student loan repayment comes out of your net pay.
Student loans do not count towards benefits eligibility in most cases. Income-based benefits like Universal Credit are assessed on your earnings, not your loan repayments.
However, if you take a student loan without student support, it may not be counted against your eligibility for other support.
The Psychology of Student Debt
The biggest challenge with student loans is psychological. A balance of £43,000 or £54,000 feels enormous. It creates anxiety. Young graduates see the number and feel burdened.
But if you understand that you only pay when you earn, that the repayment is automatic, that it is written off eventually, and that you might never actually repay it, the anxiety diminishes. The loan is not a judgment. It is a tool that funded your education when you could not afford it upfront.
Some graduates prioritise paying off their loan ahead of schedule because it feels better emotionally. That is a valid choice. But it should be a conscious choice, not a default assumption that you must repay it.
Before You Accept a Loan
If you have not yet gone to university, understand that borrowing £40,000+ to fund a degree is a significant decision. The question is not “Can I afford this?” (the loan makes it affordable upfront). The question is “Is this degree worth the investment and the conditional repayment obligation?”
A degree is valuable not just for immediate earning potential but for career flexibility, earning potential over your lifetime, and personal development. But it is worth being honest about whether a particular degree in a particular subject at a particular university will deliver a return on investment.
If you already have a student loan, stop worrying about the balance and focus on what you are earning now and what your career trajectory looks like. The loan will take care of itself.
This article is part of the Money Sorted series on moneysorted.money. For a detailed guide to student finance planning, see the Student Finance eBook (included with Money Sorted’s comprehensive financial planning course).