Student Loan Interest Cap: Who Really Benefits?

Labour's proposed 6% interest rate cap on student loans will largely benefit higher-earning graduates, specifically those with an annual income exceeding £44,300. This finding highlights that the cap’s impact is constrained by the existing income-based interest structure already in place.

Initial Rationale for the Cap

The government initially presented the plan to cap the interest rate on Plan 2 student loans at 6 percent for one year, starting in September 2026, as a measure to help younger individuals manage potential cost increases linked to global events, such as the situation in Iran and associated inflation. However, the structure of student loan interest, tied to the Retail Price Index (RPI) and adjusted based on income, limits the scope of this benefit.

Impact Based on Income Levels

Low Earners (£29,385 or Less)

Graduates earning £29,385 or less will only accrue interest at the current RPI rate of 4.1 percent, established in March, and will not experience any reduction from the 6 percent cap. Individuals earning below £29,284, while not making repayments, will still accrue interest, and will see an increase compared to the previous year’s 3.2 percent RPI rate.

Mid-Range Earners (£29,386 - £52,884)

The benefit of the cap becomes apparent for those earning between £29,386 and £52,884, who pay RPI plus a sliding scale percentage. Only graduates earning above £44,300 would have exceeded the 6 percent threshold without the cap.

High Earners (£52,885 or More)

Those earning £52,885 or more, currently paying 7.1 percent (RPI plus 3 percent), will see their rate reduced to 6 percent. This disparity has fueled calls for broader reforms to Plan 2 student loans, with concerns about escalating interest outpacing repayment ability.

Impact on Different Loan Plans

The cap applies to Plan 3 loans, covering postgraduate studies, offering similar benefits to eligible students. However, graduates on Plans 1, 4, and 5 will see their interest rates rise by 0.9 percent to 4.1 percent, as these plans are not subject to the cap.

Expert Analysis and Future Outlook

Save the Student emphasizes that while the cap provides some certainty, its impact is limited. They highlight that rising interest rates, coupled with fixed monthly repayments based on income, will likely lead to a larger overall debt burden for many graduates, making full repayment less probable. It’s crucial to understand that while interest accrues, monthly repayment amounts remain income-dependent.

The current cap is only confirmed for the academic year beginning in September 2026, with the Department of Education stating that future rates are under review. The student loan system functions more like a graduate tax, with repayments increasing alongside earnings, and is governed by five different repayment plans, the most recent being Plan 5, which applies to students starting after September 2023 and initiating repayments at an income of £25,000. Students in Scotland operate under Plan 4, with a repayment threshold of £32,745.