The UK government has introduced a temporary cap on student loan interest rates, setting a maximum of 6% for the 2026-27 academic year. This measure aims to provide relief for some borrowers, but experts warn that many students and graduates in England and Wales could still see their debt burdens increase from this autumn due to escalating inflation driven by the Iran war.
Government Intervention and Its Limitations
This week, ministers announced that the interest rate on plan 2 student loans, taken out by English students from September 2012 to July 2023 and Welsh students since September 2012, will be capped at 6% from 1 September until 31 August 2027. The cap also applies to postgraduate plan 3 loans for master's or doctoral courses in England and Wales.
While higher earners are set to benefit from this cap, many others may face higher interest charges than currently applied. The decision stems from concerns that the Iran war will push up inflation, making student loans more expensive. Monthly repayments, based on a percentage of earnings over specific thresholds, remain unchanged, but the interest added to the debt is what will fluctuate.
How Interest Rates Are Determined
Annually, the government revises student loan interest rates using the Retail Prices Index (RPI) measure of inflation for March. Currently, the RPI rate is 3.2%, with up to 3% added for some borrowers. For plan 2 students, the interest rate during studies is 6.2%, and after graduation, it varies by income:
- Earners below £29,385 pay 3.2%.
- Earners above £52,885 pay the maximum of 6.2%.
- Those in between pay a sliding scale from 3.2% to 6.2%.
Postgraduate loan holders are charged 6.2%. However, from September, no one will pay more than 6% due to the new cap.
Inflation Projections and Economic Impact
The RPI figure for March 2026 will be published on 22 April, with most experts predicting it will exceed last year's 3.2% due to the Iran war. In February, the rate was 3.6%, and it was expected to decline before US airstrikes on Iran altered price trajectories.
Sanjay Raja, chief UK economist at Deutsche Bank, told the Guardian that his firm forecasts the March RPI inflation figure at 3.88%, while the wider market predicts 4.08%. If the RPI reaches 4%, low-income plan 2 borrowers (earning less than £29,385) will see their interest rise from 3.2% to 4%. In contrast, high earners (above £52,885) will pay slightly less—0.2 percentage points lower—than the current 6.2%, as without the cap, they would have faced 7%.
Financial Implications for Borrowers
The Institute for Fiscal Studies estimates that in this scenario, the cap could reduce total expected lifetime loan repayments for a high-earning plan 2 holder by about £500 in today's prices. For those earning between the thresholds, most would pay more with RPI at 4%, but a few might pay slightly less due to the cap.
Tom Allingham, a student loans expert from Save the Student, notes that the interest rate does not affect monthly repayments, which are solely salary-dependent. He explains, "The interest only affects how quickly your balance grows—and as most plan 2 borrowers won't repay their loans in full before they're cancelled, this cap will only have a material financial impact on the highest earners, who will now clear their debts slightly earlier."
This development highlights the ongoing challenges in student finance, where policy adjustments intersect with global economic pressures, leaving many graduates navigating uncertain debt landscapes.
