With the new financial year now underway, hundreds of thousands of UK savers are facing imminent tax bills from HMRC. An estimated 883,000 individuals with savings of £3,500 or more are expected to receive notifications in the coming weeks as the tax authority begins assessing what's owed for the 2025/26 tax period.
Who Will Be Affected by These Tax Bills?
The tax bills will primarily impact savers who have exceeded their personal savings allowance through interest earned on their accounts. According to recent estimates, approximately 2.79 million Brits will receive letters from HMRC, including 1.42 million basic rate taxpayers and around 900,000 higher rate taxpayers.
The situation has been exacerbated by several factors:
- Interest rates have been rising steadily for years
- Frozen tax thresholds mean 120,000 more people will have to pay tax in 2025/26
- The number of people being charged has increased dramatically since 2022/23
Understanding the Personal Savings Allowance
The amount of tax you'll pay depends entirely on your income tax band and the type of savings account you hold. Basic rate taxpayers (earning £12,571 to £50,270 annually) can earn £1,000 per year in tax-free interest, with anything above this amount charged at 20%.
Higher rate taxpayers (with incomes of £50,271 to £125,140) have a personal savings allowance of just £500, beyond which they face a 40% tax rate. Those earning above £125,140 have no personal savings allowance at all and must pay 45% tax on all savings interest.
How Much Could You Owe?
According to Paragon Bank, higher rate savers who have generated enough interest to incur a tax payment face an average bill of £2,030. Basic rate taxpayers earning less than £50,270 annually will face an average bill of £641.
The dramatic increase in affected savers represents a 128% rise for higher rate taxpayers and a 132% increase for basic rate taxpayers since 2022/23.
Why More Savers Are Being Affected
Andrew Wright, head of savings at Paragon Bank, explains that this trend is "likely being driven by retirees who have modest incomes but meaningful savings balances." He notes that many mature savers value the stability of cash and have saved prudently over many years to build financial resilience.
"With tax on savings income due to increase from April 2027, that pressure will only intensify at a time when households are still contending with the effects of inflation," Wright comments. "It's unfair they are being punished through a tax system not initially designed for them."
Account Types and Tax Implications
The type of savings account you hold significantly impacts when and how much tax you'll pay. According to Money Saving Expert, basic rate taxpayers would need approximately £22,000 in a top easy-access savings account to exceed their allowance at current rates. For higher rate taxpayers, this figure drops to just over £11,000.
However, fixed-rate accounts present a different scenario. Because you're taxed on savings interest in the tax year you can access it, those who opt for fixed-rate savings accounts longer than one year face particular challenges. When interest is paid at maturity, all the interest is counted toward the final year's personal savings allowance.
This means:
- Higher rate taxpayers who put as little as £3,500 into a three-year fixed rate account at 5% would earn £500 by the end of the term
- Basic rate taxpayers would need roughly £7,000 put away to reach the threshold
What Types of Savings Interest Are Taxable?
Your personal savings allowance applies to interest from various sources including bank and building society accounts, savings and credit union accounts, unit trusts, investment trusts, peer-to-peer lending, trust funds, government or company bonds, and some life insurance contracts.
It's important to note that savings in tax-free accounts like Individual Savings Accounts (ISAs) and some National Savings and Investments accounts do not count toward your allowance.
How Will You Know If You Owe Tax?
Banks notify HMRC of the interest each customer receives throughout the year. As Lloyds Bank explains: "HMRC will, in turn, complete any necessary calculations and changes." If HMRC determines you owe tax, you'll receive either a P800 letter or a Simple Assessment depending on your circumstances.
These letters explain how the money will be recouped, typically through a deduction in your personal allowance which will mean a change to your tax code. HMRC states these letters "can be sent at any time as information becomes available."
To determine whether you might be due a bill, estimates may be available through your Personal Tax Account on Gov.uk. Alternatively, your bank or building society should provide annual statements detailing how much interest you earned, with some including a breakdown of what's taxable.
With tax changes looming in 2027 and continued economic pressures, UK savers are advised to review their savings arrangements and understand their potential tax liabilities to avoid unexpected bills in the coming months.
