LONDON, August 14 — The UK’s Personal Savings Allowance, once a reliable shield for millions of savers, is now leaving a growing number exposed to unexpected tax bills as interest rates climb and tax thresholds remain frozen. The allowance, introduced in April 2016, lets basic-rate taxpayers earn up to £1,000 in savings interest per tax year tax-free, while higher-rate taxpayers have a £500 limit and additional-rate taxpayers receive no allowance at all. But a dramatic shift in the savings landscape has upended those protections.
In 2016, most easy-access savings accounts offered interest rates of 1% or less. Today, the majority pay 3% or more.
That change, combined with inflation and frozen tax thresholds, has triggered a 1,047% increase in the number of non-ISA savings accounts projected to earn over £1,000 in interest annually. In January 2018, only 462,000 accounts were forecast to exceed the basic-rate threshold. By 2024, that number had risen to 5.3 million.
Any interest earned above the PSA limits is taxed at the saver’s standard income tax rate.
The mechanics of the allowance
The Personal Savings Allowance was designed to simplify taxation on savings income. Basic-rate taxpayers benefit from the full £1,000 allowance. Higher-rate taxpayers have a reduced £500 limit.
Additional-rate taxpayers receive no allowance. When the policy launched, low interest rates meant most savers never approached their allowance limits.
But as rates rose, the real-world value of the allowance eroded. Savers who once earned minimal interest now find themselves crossing the threshold, triggering tax liabilities they may not have anticipated.
A perfect storm of economic factors
The surge in savings interest rates is only part of the story. Inflation has also played a role, reducing the purchasing power of the fixed allowance limits. At the same time, frozen tax thresholds mean more people are being pushed into higher tax brackets, further squeezing their savings returns.
Analysis by Yorkshire Building Society underscores how these structural factors have combined to diminish the effectiveness of the PSA. The result is a system where savers, particularly those with modest balances in high-interest accounts, are increasingly likely to owe tax on their savings income.
What happens next
With interest rates remaining elevated and no immediate sign of tax thresholds being adjusted, the number of savers affected is expected to keep rising. For those approaching or exceeding their allowance limits, the message is clear: what was once tax-free income may now be subject to a bill. The question now is whether policymakers will revisit the allowance’s design—or if savers will need to adapt their strategies to avoid unexpected tax liabilities in the years ahead.
