Millions of savers across the UK are being warned about an impending tax shock as the Personal Savings Allowance (PSA) reaches its 10-year anniversary without any update, leaving it branded as 'outdated' by financial experts. The allowance, which was introduced to protect savings interest from tax, has remained static while salaries and interest rates have risen, a phenomenon known as fiscal drag.
The Impact of Fiscal Drag on Savers
According to analysis from Moneyfactscompare.co.uk, fiscal drag is pushing more people into higher tax brackets, where the PSA is significantly reduced. For basic-rate taxpayers, the allowance stands at £1,000, but for those dragged into the higher-rate band at 40%, it is halved to just £500. This means that even individuals saving for major life events, such as a house deposit, could face tax bills on their savings if they are not held within an ISA wrapper.
Real-World Examples Highlight the Issue
A stark example illustrates the problem: a saver who invested £20,000 in the top one-year bond a year ago, offering 4.58% interest, would have earned £916 in annual interest. This amount breaches the £500 PSA for higher-rate taxpayers and is perilously close to the £1,000 limit for basic-rate taxpayers. In contrast, the same sum in a top one-year ISA at 4.45% would yield £890 entirely tax-free, underscoring the advantage of using ISAs.
Rachel Springall, a finance expert at Moneyfactscompare.co.uk, emphasised the urgency of the situation. "Cash ISAs have proven their worth to savers over many years, especially as fiscal drag causes millions to breach their Personal Savings Allowance," she said. "April marks the 10-year anniversary of the PSA, and while it protected savings interest from tax when it was launched for many, it's outdated and needs to change."
Lack of Awareness Compounds the Problem
Compounding the issue is a widespread lack of awareness about the PSA. A survey conducted by Yorkshire Building Society revealed that more than a third of consumers had never heard of the allowance. Over the past decade, this ignorance has cost basic-rate taxpayers over £4.7 billion in tax on their savings interest, highlighting how the PSA has failed to evolve with changing economic conditions.
The Role of ISAs in Tax-Efficient Saving
With interest rates higher than when the PSA was introduced, more savers are expected to see their savings income taxed in the coming years. Springall advised that individuals who have or are about to move up an income tax band should prioritise using their cash ISA allowance, which resets on April 6. "Cash ISAs don't tend to pay rates too dissimilar to non-ISAs at this time of year, because of the big push to improve deals during ISA season," she noted. "So really, someone who has or is about to move up an income tax band would be wise to use up their cash ISA allowance, or lose it."
Broader Economic Context and Savings Trends
The importance of building a healthy nest egg has been underscored over the past decade, with households increasing their savings ratio. According to the Office for National Statistics, the savings ratio was 10.2% during Q2 2025, up from 6.8% in Q2 2016. This growth in savings necessitates careful placement to ensure tax efficiency.
Springall concluded with a call to action: "Those extra savings need to be put into the right place, so it is wise to seek advice to make sure any interest earned from pots is as tax-efficient as possible." The ongoing failure to update the PSA means that without proactive steps, many savers will continue to face unexpected tax bills, eroding their hard-earned savings.
