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If you have moved cash into a higher-paying savings account over the last couple of years, you are far from alone.
With interest rates climbing, savers have been chasing better returns. The problem is that many are now being caught by an unexpected tax bill they did not see coming.
Recent figures suggest the average savings tax bill for higher-rate taxpayers has now reached more than £2,300 a year, with HMRC quietly clawing back tax through PAYE coding adjustments.
For additional rate taxpayers the figure is closer to £7,000. And changes to ISAs on the horizon are likely to make things worse.
Understanding the Personal Savings Allowance
The Personal Savings Allowance (PSA) lets you earn a certain amount of interest each year without paying tax. The thresholds are:
- £1,000 for basic-rate taxpayers
- £500 for higher-rate taxpayers
- £0 for additional-rate taxpayers
With a five per cent easy-access savings account, a basic-rate taxpayer hits the PSA limit on around £20,000 of savings. A higher-rate taxpayer hits theirs on just £10,000.
Beyond those points, every additional pound of interest is taxed at your usual Income Tax rate of 20, 40 or 45 per cent.
Why so many people are being caught out
There are three reasons for the rise in unexpected tax bills.
First, interest rates have climbed sharply since 2022, while the PSA has stayed frozen since it was introduced in 2016.
Second, frozen Income Tax thresholds mean more people are now in the higher-rate band, where the PSA is halved or removed entirely.
Third, HMRC collects the tax automatically for most savers by adjusting their PAYE tax code. The first many people know about it is when their pay packet shrinks the following year.
If you complete a Self-Assessment return, the obligation is on you to declare interest from all your accounts each year.
The looming ISA changes
ISAs remain the simplest defence against savings tax. Interest earned within an ISA is tax-free, does not count towards your PSA and does not need to be declared.
Proposed changes would reduce the annual Cash ISA limit from £20,000 to £12,000 for under-65s from 2027, with the difference only available through Stocks and Shares ISAs.
HMRC has also announced a new 22 per cent tax rate on uninvested cash in Stocks and Shares ISAs.
For younger savers building a cash buffer, that is a significant tightening. It is likely to push more people into taxable savings accounts and increase the number caught out by the PSA.
What you can do
A few sensible steps will go a long way:
- Use your full ISA allowance as early in the tax year as possible
- For couples, make sure you are using both partners’ PSAs through individual accounts
- Consider whether NS&I Premium Bonds, gilts or other tax-efficient products might suit
- Keep a running record of interest earned each year so nothing surprises you
For savers approaching or already in higher-rate territory, professional advice can make a meaningful difference to your net returns.
If you are worried about an unexpected savings tax bill or want to make sure your savings strategy is as tax-efficient as possible, get in touch with our team. We will help you protect more of what you have worked hard to save.
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