The government has announced an interest rate cap for some student loans. However, the reality of this protection is not all it seems.
Following Easter, the Department for Education (DfE) announced a 6% interest rate cap on Plan 2 and Plan 3 student loans. The DfE press release confidently read: “Interest rate cap introduced to protect Plan 2 borrowers.” As it turns out, this was a somewhat creative interpretation of the policy’s actual impact.
Understanding the Arcane World of Plan 2 Loans
To see why the announcement is misleading, you need to delve into the complex mechanics of Plan 2 student loans. These were loans made for undergraduate courses starting between 1 September 2012 and 31 July 2023 in England, and they are still being issued in Wales.
The loan ‘interest’ charged is directly linked to the Retail Price Index (RPI) inflation rate from March of each year, which is then applied from the subsequent 1 September:
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During Study: Until the April after graduation, interest is charged at a flat rate of RPI + 3%. At present, this sits at 6.2% (based on the March 2025 RPI of 3.2%).
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After Graduation: For graduates—who make up the vast bulk of Plan 2 borrowers now—the interest rate varies on a sliding scale between RPI and RPI + 3%, completely dependent upon income.
Thresholds and the Payment Illusion
For the 2026/27 academic year, the lower interest threshold applies the base RPI rate to graduates with an income up to £29,385. The maximum rate of RPI + 3% applies if an individual’s income reaches £52,885 or more.
Crucially, the interest rate itself has no bearing on how much a graduate actually pays each month; it only dictates how long they must make payments. This is subject to a maximum of 30 years, after which any outstanding debt is completely written off.
The actual monthly payment level is fixed at 9% of any income earned over £29,385—a figure that the last Budget froze until April 2030.
The Real Motivation Behind the 6% Cap
The DfE made its defensive announcement just ahead of the official RPI figure release for March 2026. At the time, inflation was widely expected to jump from February’s 3.0% due to the geopolitical tensions and conflict in Iran. Facing growing criticism over the frozen Budget repayment threshold, the DfE rolled out the temporary 6% interest cap (for one year only) to preempt further public discontent.
Ultimately, the March RPI turned out to be 3.3%. This means the minimum interest rate for the year will be 3.3% and the maximum capped at 6%. Because of how the sliding scale is calculated, only graduates with incomes above £50,535, alongside the few individuals still studying, will actually benefit from the cap at all.
With over £260 billion of outstanding student debt across the UK, the hard financial truth is clear: your student loan is simply another area of your personal finances where you cannot look to the state for meaningful support.
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