Most basic-rate taxpayers can earn up to £1,000 of interest a year without paying tax on it. Here is exactly how the Personal Savings Allowance works, who qualifies, and how HMRC collects any tax due.
If you have ever opened a savings account and wondered why the interest landed in your account without any tax being deducted, the answer is the Personal Savings Allowance. Introduced in April 2016, it lets the vast majority of UK savers earn interest without paying a penny of income tax on it. With interest rates higher than they were for most of the 2010s, the allowance matters more than it used to: a modest pot can now generate enough interest to brush up against the limit, especially for higher-rate taxpayers whose allowance is only £500.
The Personal Savings Allowance is not a separate pot of money you apply for. It is a slice of your savings interest that is simply taxed at 0 per cent. Because banks stopped deducting tax at source in 2016, your interest now arrives gross (untaxed), and HMRC reconciles any tax due after the year ends. Understanding where your allowance starts and stops is the difference between a clean tax position and an unexpected adjustment to your tax code a year later.
The Personal Savings Allowance is a nil-rate band that applies specifically to savings income. Savings income means interest, not dividends or rental income. It includes interest from bank and building society accounts, credit unions, most fixed-rate and easy-access savings bonds, government gilts, corporate bonds, peer-to-peer lending platforms, and even the interest element of some life annuity payments.
The key word is interest. Dividends from shares have their own separate Dividend Allowance (£500 for 2025/26), and that is a different calculation entirely. If you mix the two up, you can easily overstate how much tax-free income you are entitled to.
Crucially, interest covered by the allowance is still part of your total taxable income. It is taxed at 0 per cent, but it still counts when HMRC decides whether you are a basic, higher or additional-rate taxpayer. That subtlety catches people out: a basic-rate taxpayer sitting close to the higher-rate threshold can have savings interest tip them over, which then shrinks their own allowance from £1,000 to £500.
The amount of Personal Savings Allowance you get is fixed by your highest marginal rate of income tax. These numbers have not changed since the allowance launched in 2016.
| Your income tax band | Taxable income (England, Wales, NI) | Personal Savings Allowance |
|---|---|---|
| Basic rate (20%) | Up to £50,270 | £1,000 |
| Higher rate (40%) | £50,271 to £125,140 | £500 |
| Additional rate (45%) | Over £125,140 | £0 |
Scotland complicates the picture slightly. Scottish taxpayers pay Scottish income tax rates on their non-savings income, but savings interest is taxed using the UK-wide rates and bands, not the Scottish ones. For the purposes of working out your Personal Savings Allowance, HMRC looks at the UK rate that would apply, so a Scottish saver whose total income falls in the UK higher-rate band gets the £500 allowance. The Scottish starter, basic, intermediate, higher, advanced and top rates affect your salary, not your savings allowance band.
You get the £1,000 allowance if all your income, including the savings interest itself, keeps you within the basic-rate band. You drop to £500 the moment any of your income is taxed at the higher rate. And you lose the allowance entirely once you are an additional-rate taxpayer with income over £125,140. There is no taper or sliding scale; it is a cliff edge at each threshold.
You do not need to do anything to claim the Personal Savings Allowance. It is automatic. Here is the chain of events:
This automatic system works smoothly until interest rates rise and balances grow. If your circumstances change, for example you move from basic to higher-rate pay, it is worth checking that the interest HMRC has on record is accurate. You can model your overall position with the salary tax calculator to see which band you fall into, and then use the savings interest calculator to estimate the tax due on interest above your allowance.
Priya is a marketing manager earning £62,000 a year, putting her firmly in the higher-rate band. She has £30,000 in an easy-access savings account paying 4.2 per cent, earning roughly £1,260 of interest in the year. She also has £15,000 in a cash ISA paying similar interest.
The ISA interest is irrelevant here. It is tax-free and never touches her Personal Savings Allowance. Only the £1,260 from the easy-access account counts.
As a higher-rate taxpayer, Priya's allowance is £500. The first £500 of her £1,260 interest is taxed at 0 per cent. The remaining £760 is taxed at her marginal rate of 40 per cent.
Tax due on her savings interest: £760 x 40% = £304.
HMRC will typically collect this £304 by reducing her tax code allowance in a later year, so she sees a slightly higher PAYE deduction from her salary rather than a separate bill. Had Priya moved more of that cash into her ISA before the year started, she could have sheltered the interest entirely.
The Personal Savings Allowance does not exist in isolation. Three other reliefs sit alongside it and the order in which they apply can change your tax bill significantly.
Before your Personal Savings Allowance is even touched, low earners may qualify for the starting rate for savings, a separate 0 per cent band worth up to £5,000 of interest. The catch is that it is reduced pound-for-pound by any non-savings income (such as wages or a pension) above your £12,570 Personal Allowance. Someone whose only income is a small pension plus savings interest can shelter a remarkable amount tax-free: up to £12,570 of Personal Allowance, then up to £5,000 of starting-rate band, then £1,000 of Personal Savings Allowance. Where both apply, the starting rate is used first.
Your £12,570 Personal Allowance is used against your income in a set order, with non-savings income (wages, self-employment, pensions) generally taken first, then savings, then dividends. If your earned income is below £12,570, the unused part of the Personal Allowance covers your savings interest before either the starting rate or the PSA is needed, which is why very low earners pay no tax on substantial interest.
Dividends are taxed under a completely separate £500 Dividend Allowance and at different rates. They do not draw on your Personal Savings Allowance, and savings interest does not draw on the Dividend Allowance. If you have both, treat them as two parallel calculations that nonetheless both feed into your total income for band purposes.
The most common surprise is the band-tipping effect. Because savings interest counts toward total income, a basic-rate taxpayer with significant interest can find that the interest itself pushes part of their income into the higher-rate band. That has two consequences: the part of the interest in the higher band is taxed at 40 per cent, and the higher-rate status shrinks the allowance from £1,000 to £500. In a high-interest-rate environment this is no longer a fringe scenario, and it is one of the strongest arguments for using ISAs to keep interest off your taxable income entirely.
The Personal Savings Allowance quietly does its job for most savers, but the moment your interest grows or your income nudges into the next band, the maths changes fast. Knowing your number before April beats finding out from a tax code adjustment in arrears.
Because the allowance is applied automatically and any tax is collected after the year closes, the time to act is before 5 April, not after. If you are close to your limit, moving cash into an ISA, splitting savings with a lower-earning spouse, or timing a fixed-bond maturity can keep more of your interest tax-free. Run your numbers through the savings calculator to see whether you are likely to breach your allowance, and check which band you sit in so you know whether you are working with £1,000, £500 or £0.
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