Most UK banks now pay savings interest without deducting any tax. This leads many savers to assume their interest is tax-free. In reality, tax on savings still applies once your interest passes certain allowances. The good news is that most people pay nothing at all. The UK offers a generous set of tax-free bands for savers. In this guide, we explain exactly how the UK taxes savings interest. You will learn about the personal savings allowance, the starting rate for savings, how HMRC collects the tax, and how ISAs fit in. We also include worked examples with real numbers.
How Is Tax on Savings Charged in the UK?
Savings interest counts as income for tax purposes. HMRC adds it to your other income, such as wages or a pension. Your total income then decides your tax band. However, several allowances can reduce the tax on your savings to zero. The main ones are the personal allowance of £12,570, the starting rate for savings of up to £5,000 at 0%, and the personal savings allowance. Interest inside an ISA is completely tax-free and sits outside all of these calculations. Since April 2016, banks and building societies have paid interest gross, with no tax deducted. As a result, HMRC collects any tax you owe through your tax code or a Self Assessment return. Most basic-rate taxpayers with modest savings never owe a penny.
The Personal Savings Allowance by Tax Band
The personal savings allowance lets you earn a set amount of interest tax-free each year. The amount depends on your income tax band. It applies per person, not per account. Therefore, you must add together the interest from all your non-ISA accounts. Once your total interest passes your allowance, you pay tax on the excess at your marginal rate.
Basic-Rate Taxpayers: £1,000 Tax-Free
If your total income is between £12,571 and £50,270, you are a basic-rate taxpayer. You can earn up to £1,000 of savings interest per tax year without paying tax. For example, if your accounts pay £800 in interest, you owe nothing. If they pay £1,400, only the extra £400 is taxable. You would pay 20% tax on that £400, costing you £80. Because the allowance is generous, most basic-rate savers never pay tax on their interest.
Higher-Rate Taxpayers: £500 Tax-Free
If your income is between £50,271 and £125,140, you pay tax at the higher rate. Your personal savings allowance drops to £500. You pay 40% tax on interest above £500. For example, £900 of interest leaves £400 taxable, costing £160 in tax. Be careful near the threshold. A small pay rise that pushes you from £50,200 to £50,300 cuts your allowance from £1,000 to £500 overnight. Your tax band is set by your total income including the interest itself. As a result, a large interest payment can tip you into the higher band.
Additional-Rate Taxpayers: No Allowance
If your income exceeds £125,140, you pay the additional rate of 45%. You get no personal savings allowance at all. Every pound of savings interest outside an ISA is taxable at 45%. For savers in this position, ISAs become especially valuable. Sheltering money in cash or stocks and shares ISAs is often the simplest way to cut the bill. Pension contributions can also help, because they may bring your taxable income back below the threshold.
The Starting Rate for Savings: Up to £5,000 at 0%
There is a lesser-known relief called the starting rate for savings. It can make up to £5,000 of interest tax-free at a 0% rate. However, it only helps people with low non-savings income. To get the full £5,000, your wages, pension and other non-savings income must be below £17,570. This figure is the £12,570 personal allowance plus the £5,000 starting-rate band. Every £1 of non-savings income above £12,570 reduces the band by £1. For example, someone with £14,570 of pension income gets a £3,000 starting-rate band. Someone with £18,000 of other income gets nothing. This relief is especially useful for retirees living partly on savings, part-time workers and people taking a career break. It sits alongside your personal savings allowance. Therefore, a low earner could potentially receive over £18,000 of interest tax-free by combining all three allowances.
How Banks Report Your Interest to HMRC
You do not need to report interest yourself in most cases. Banks and building societies send HMRC details of the interest they pay you each year. HMRC then works out whether you owe any tax. If you do, it collects the money automatically in most cases. The process suits ordinary savers, who rarely need to take action. Nevertheless, it helps to understand how the process works.
Tax Collected Through Your Tax Code
For most employees and pensioners, HMRC adjusts your PAYE tax code. If you owe £80 of tax on savings interest, HMRC simply reduces your tax-free pay by the matching amount. You will notice a small change in your monthly take-home pay. This usually happens in the tax year after the interest was paid. You do not need to contact HMRC for this to happen. However, it is worth checking your tax code notice each year. Mistakes are rare, but they do happen, and an error could mean you pay too much or too little.
When You Must Use Self Assessment
Some savers need to declare interest through a Self Assessment tax return. You must do this if you earn more than £10,000 in savings interest outside an ISA in a tax year. You also need Self Assessment if you are already filing a return for another reason, such as self-employment. In that case, you add your savings interest to the return. The deadline for online returns is 31 January following the tax year. If HMRC has under-collected tax through your code, it may also ask you to complete a return. When in doubt, a quick call to HMRC can confirm what you need to do.
ISAs Versus Taxable Savings Accounts
ISAs and ordinary savings accounts are taxed very differently. Interest inside a cash ISA is always tax-free, whatever your tax band. It does not use up your personal savings allowance. You also never need to declare it to HMRC. Each adult can pay up to £20,000 into ISAs per tax year.
In contrast, interest in an ordinary account counts towards your personal savings allowance. Once you exceed it, you pay tax on the rest. For basic-rate taxpayers with small balances, the difference may not matter. The £1,000 allowance covers a lot of interest. At a 4% rate, you would need £25,000 saved to earn £1,000 of interest. However, as balances grow, ISAs become more attractive. Higher-rate taxpayers benefit even sooner, because their allowance is only £500. A simple rule works well. Use your ISA allowance first for money you will not need soon. Then use ordinary accounts for the rest, staying within your personal savings allowance if you can.
Worked Examples: Tax on Savings in Real Numbers
Numbers make the rules much clearer. Here are three realistic examples for the 2026/27 tax year.
Example 1: Basic-rate taxpayer. Sarah earns £35,000 and her savings pay £1,400 in interest. Her personal savings allowance is £1,000. She pays 20% tax on the remaining £400. Her tax bill on savings is £80. She keeps £1,320 of the interest.
Example 2: Higher-rate taxpayer. David earns £60,000 and his savings pay £900 in interest. His allowance is £500. He pays 40% tax on the remaining £400. His tax bill is £160. If David moved his savings into a cash ISA, the whole £900 would be tax-free.
Example 3: Low income with the starting rate. Margaret has a pension of £11,000 and savings interest of £4,000. Her non-savings income is below £12,570, so she gets the full £5,000 starting-rate band. Her £4,000 of interest falls entirely within it. She also has her £1,000 personal savings allowance untouched. She pays no tax on savings at all. This shows why the starting rate matters so much for retirees.
How to Legally Reduce the Tax on Your Savings
You cannot avoid tax you legally owe, but you can arrange your savings wisely. These strategies are all fully legitimate:
- Use your ISA allowance first. Up to £20,000 per year grows free of UK tax. For most savers, this is the single most effective step.
- Share savings with your partner. Each person has their own personal savings allowance. A couple who are both basic-rate taxpayers can earn £2,000 of interest tax-free between them.
- Consider Premium Bonds. Prizes are completely tax-free and do not count towards your allowances. The prize rate is modest, but the tax treatment is unbeatable for higher earners.
- Time your withdrawals. If you are close to a tax-band threshold, realising interest in a lower-income year can cut the rate you pay.
- Top up your pension. Pension contributions reduce your taxable income. Dropping from higher-rate to basic-rate doubles your savings allowance from £500 to £1,000.
- Check the starting rate. If your non-savings income is under £17,570, you may qualify for up to £5,000 of interest at 0%. Many eligible savers never claim it.
Frequently Asked Questions
Do I pay tax on savings interest under £1,000?
Probably not, if you are a basic-rate taxpayer. Your personal savings allowance covers the first £1,000 of interest. The allowance covers higher-rate taxpayers up to £500. Remember that the allowance is per person across all accounts, so add up interest from every account.
Is ISA interest really completely tax-free?
Yes. Interest, dividends and investment growth inside an ISA are free of UK income tax and capital gains tax. You never need to declare ISA income to HMRC. This applies whatever your tax band, which makes ISAs especially valuable for higher and additional-rate taxpayers.
Do I need to tell HMRC about my savings interest?
Usually not. Banks report your interest to HMRC automatically. HMRC then adjusts your tax code to collect any tax due. You only need to take action if you earn over £10,000 in non-ISA interest, or if you already file a Self Assessment return.
What is the starting rate for savings?
It is a 0% tax band on up to £5,000 of savings interest. It is only available if your non-savings income, such as wages or pension, is below £17,570. The band shrinks by £1 for every £1 of other income above the £12,570 personal allowance.
Does the personal savings allowance apply in Scotland?
Yes. The UK applies UK-wide rates to savings income, even for Scottish taxpayers. Scotland sets its own rates for other income, but the personal savings allowance and the £1,000, £500 and £0 bands work the same across the whole UK.
Are Premium Bond prizes taxed?
No. Premium Bond prizes are completely tax-free in the UK. They do not count towards your personal savings allowance or need to be declared. Each person can hold up to £50,000 in Premium Bonds.
Key Takeaways and Next Steps
To sum up, most UK savers pay no tax on their interest at all. Basic-rate taxpayers get £1,000 tax-free, higher-rate taxpayers get £500, and additional-rate taxpayers get nothing. Low earners may also benefit from the £5,000 starting rate at 0%. Interest inside ISAs is always tax-free and never needs declaring. Banks report your interest to HMRC, which usually collects any tax through your tax code. As a next step, add up the interest from all your non-ISA accounts for this tax year. If it is close to your allowance, consider moving money into a cash ISA before 5 April. Finally, if your other income is under £17,570, check whether the starting rate could save you even more.
This article is for general information only and is not financial advice.
