Key Takeaways
- Basic-rate taxpayers can earn up to £1,000 in savings interest tax-free per year (Personal Savings Allowance).
- Higher-rate taxpayers receive only £500; additional-rate (45%) taxpayers receive no allowance.
- Starting rate for savings: Low earners may be eligible for an additional £5,000 of tax-free savings interest.
What Is the Personal Savings Allowance?
The Personal Savings Allowance (PSA) was introduced by HMRC in April 2016 and allows UK taxpayers to earn a set amount of interest on their savings without paying income tax. The allowance applies to interest from bank accounts, building society accounts, cash ISAs (separately), credit unions, and peer-to-peer lending.
The PSA is separate from your ISA allowance. Interest earned inside a Cash ISA does not count against your PSA — it is always tax-free regardless of how much you earn.
| Tax Band (2025/26) | Income Range | Personal Savings Allowance |
|---|---|---|
| Basic rate (20%) | Up to £50,270 | £1,000 |
| Higher rate (40%) | £50,271 – £125,140 | £500 |
| Additional rate (45%) | Over £125,140 | £0 |
How Much Do You Need Saved Before Tax Applies?
At current interest rates, the PSA is reached earlier than many savers expect. At 4.85% AER — the current best easy-access rate — a basic-rate taxpayer would begin paying tax on savings interest once their total savings balance exceeds approximately £20,600. A higher-rate taxpayer reaches their £500 limit at just £10,300.
Quick Calculation
PSA ÷ AER = Balance at which tax kicks in
Basic rate: £1,000 ÷ 4.85% = ~£20,619
Higher rate: £500 ÷ 4.85% = ~£10,309
Five years ago, with savings rates near 0.1%, these thresholds were almost theoretical. With the Bank of England base rate having at 3.75% as of April 2026 and competitive savings rates above 4.5%, the PSA is now a real consideration for millions of UK savers who have never previously paid tax on savings interest.
The Starting Rate for Savings
There is an additional relief that many savers overlook: the starting rate for savings. If your non-savings income (salary, pension, self-employment) is below £17,570 in 2025/26, you may be eligible for up to £5,000 of additional tax-free savings interest.
The starting-rate band is reduced by £1 for every £1 of non-savings income above the personal allowance (£12,570). For example, if you earn £15,000 in employment income, your starting-rate band is £17,570 − £15,000 = £2,570. This is on top of your Personal Savings Allowance.
This relief is particularly relevant for retirees living on relatively modest pensions or part-time workers who have accumulated significant savings.
When Do You Need to Tell HMRC?
UK banks and building societies report interest paid to HMRC automatically. If your savings interest exceeds your PSA, HMRC will typically adjust your tax code to collect the tax — you will not receive a bill in most cases. However, if you are self-employed or already complete a Self Assessment tax return, you must declare all savings interest received, including amounts within your PSA.
Don't Ignore Interest Above Your PSA
If your savings interest exceeds your PSA and HMRC does not adjust your tax code (for example, if you have recently retired or changed jobs), you may need to pay the tax via Self Assessment. HMRC can charge penalties and interest on underpaid tax, so if in doubt, use GOV.UK's online tools or consult an accountant.
Strategies to Reduce Your Tax on Savings Interest
1. Use Your ISA Allowance First
The most effective way to shield savings interest from tax is to hold savings inside a Cash ISA. The annual ISA allowance for 2025/26 is £20,000. Interest inside an ISA is completely tax-free and does not count against your PSA. With the best Cash ISA rates currently at 4.65% AER, this is a highly efficient option for higher-rate taxpayers.
2. Split Savings Between Partners
Each individual has their own PSA. A married couple or civil partners can each hold savings independently, effectively doubling the household PSA to £2,000 (two basic-rate taxpayers) or £1,500 (one basic-rate, one higher-rate). Ensure accounts are genuinely in each person's name and that interest is paid to the correct individual.
3. Use Fixed-Rate Bonds Strategically
If you are approaching your PSA limit mid-year, a fixed-rate bond that pays interest at maturity (rather than annually) can be used to defer taxable interest into the next tax year — useful if your income or tax rate is expected to change.
Summary
With savings rates above 4% AER, the Personal Savings Allowance is now relevant for savers with balances above roughly £10,000–£20,000. Prioritising your Cash ISA allowance, splitting savings with a partner, and understanding the starting rate for savings are the most practical tools available to minimise your tax bill on savings interest in 2026.
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Important: SavingsAI is not regulated by the Financial Conduct Authority (FCA). This tool provides factual rate comparisons for educational purposes only and does not constitute personalised financial advice. Always verify rates directly with your bank before opening an account.