When Is Savings Interest Taxable?
Interest earned on ordinary savings can form part of your taxable income. This can include interest from bank accounts, building society accounts and other forms of taxable savings income.
However, earning taxable savings interest does not automatically mean that you will have tax to pay. Several parts of the Income Tax system can allow savings interest to be received without a tax charge.
For the 2026/27 tax year, the three main amounts to understand are any unused Personal Allowance, the Starting Rate for Savings and the Personal Savings Allowance.
What Determines Whether Savings Interest Is Taxed?
Whether tax is payable depends on more than simply how much interest your savings account pays.
Your savings interest
Relevant taxable savings interest is considered as part of your overall income for the tax year.
Your other income
Income such as wages and pensions can affect whether the Starting Rate for Savings is available and which Personal Savings Allowance applies.
Your available tax-free amounts
Unused Personal Allowance, the Starting Rate for Savings and the Personal Savings Allowance can potentially prevent some or all of your savings interest from creating a tax charge.
Where the savings are held
Eligible interest earned within a Cash ISA is sheltered from UK Income Tax and is treated differently from ordinary taxable savings interest.
How Much Savings Interest Can You Earn Tax-Free?
There is no single amount of savings interest that everyone can receive without paying tax. The answer depends on your other income and which allowances or 0% tax bands are available to you.
If your Personal Allowance has not already been fully used by wages, pension income or other taxable income, the unused amount can potentially cover savings interest. The standard Personal Allowance is £12,570 for the 2026/27 tax year, although the amount available can differ in some circumstances.
After considering the Personal Allowance, the Starting Rate for Savings and Personal Savings Allowance can also potentially allow savings income to be taxed at 0%.
This is why the frequently quoted figure of £1,000 of tax-free savings interest should not be treated as a universal limit. Some people can receive more than this without paying tax, while others have a smaller Personal Savings Allowance or no Personal Savings Allowance at all.
How Does the Starting Rate for Savings Work?
The Starting Rate for Savings is a 0% Income Tax band specifically for savings income. For the 2026/27 tax year, the maximum Starting Rate band is £5,000.
It is mainly relevant to people with relatively low levels of other income. If your other income is no more than your Personal Allowance, you can potentially have the full £5,000 Starting Rate band available.
Once relevant other income exceeds the Personal Allowance, the available Starting Rate band reduces by £1 for every additional £1 of that income. Using the standard £12,570 Personal Allowance, it has therefore been completely removed once relevant other income reaches £17,570.
This example shows how the £5,000 maximum Starting Rate band can reduce as other income rises above the standard Personal Allowance. The example assumes the standard Personal Allowance and does not cover circumstances in which the Personal Allowance or wider tax calculation differs.How Other Income Can Reduce the Starting Rate for Savings
What Is the Personal Savings Allowance?
The Personal Savings Allowance is another 0% tax band for qualifying savings income. The amount available depends on your overall Income Tax position.
For the 2026/27 tax year, a basic-rate taxpayer can have a Personal Savings Allowance of £1,000, while a higher-rate taxpayer can have an allowance of £500. Additional-rate taxpayers do not receive a Personal Savings Allowance.
The amount available depends on your overall Income Tax position. Basic-rate taxpayer £1,000 Higher-rate taxpayer £500 Additional-rate taxpayer £0 The £1,000 Personal Savings Allowance is not available to everyone. The amount depends on your overall Income Tax position. Figures shown are for the 2026/27 tax year.Personal Savings Allowance for 2026/27
Basic rate
Higher rate
Additional rate
Savings interest itself can affect your overall Income Tax position, so you cannot always determine your Personal Savings Allowance simply by looking at your salary or pension before the interest is included.
Relevant interest across your taxable savings accounts is also considered together rather than each account receiving its own allowance. How the Personal Savings Allowance Works explains these rules in more detail.
Can You Use the Starting Rate and Personal Savings Allowance Together?
Yes. The Starting Rate for Savings and the Personal Savings Allowance are separate 0% tax bands, so someone who qualifies can potentially benefit from both.
For example, consider someone with £16,000 of wages or pension income and the standard £12,570 Personal Allowance. As shown earlier, £3,430 of their other income sits above the Personal Allowance, reducing the maximum £5,000 Starting Rate for Savings to £1,570.
If that person remains a basic-rate taxpayer and is entitled to the £1,000 Personal Savings Allowance, they could potentially have £2,570 of savings income covered by those two 0% bands combined.
Any unused Personal Allowance can also matter before these savings-specific 0% bands are considered. This is why the amount of savings interest you can receive without paying tax depends on your wider income rather than one universal allowance.
What Happens If Your Savings Interest Exceeds the Tax-Free Amounts?
If savings interest remains after the relevant Personal Allowance, Starting Rate for Savings and Personal Savings Allowance have been considered, the remaining amount can be subject to Income Tax.
For the 2026/27 tax year, the savings basic rate is 20%, the savings higher rate is 40% and the savings additional rate is 45%. The same amount of interest can therefore produce a different tax result depending on someone’s wider income and the tax-free amounts available to them.
These simplified examples assume there is no Starting Rate for Savings or unused Personal Allowance available. The amount of interest is identical, but the available Personal Savings Allowance and applicable savings-income rate can produce different tax outcomes. Simplified 2026/27 examples. An individual’s actual tax position depends on their total income and circumstances.How the Same Savings Interest Can Produce Different Tax
£1,300 savings interest
£1,300 savings interest
The savings-income tax rates are legislated to increase from 6 April 2027 to 22% at the basic rate, 42% at the higher rate and 47% at the additional rate. The tax year therefore matters when calculating tax on interest that is not covered by the relevant allowances or 0% bands.
Is Interest From a Cash ISA Taxable?
Eligible interest earned within a Cash ISA is not subject to UK Income Tax. It therefore does not need to use your Personal Savings Allowance or Starting Rate for Savings.
This is different from ordinary savings interest that falls within one of the 0% savings bands. That interest remains within the savings-income tax system even though it may ultimately be taxed at 0%.
Ordinary Savings Account
Interest can form part of your taxable savings income. Whether tax is actually payable depends on your wider income and the allowances or 0% bands available to you.
Cash ISA
Eligible interest earned within the ISA is sheltered from UK Income Tax and does not use your Personal Savings Allowance.
Both can result in no tax being paid on the interest, but they reach that outcome through different parts of the tax system.
ISA Tax Benefits Explained looks more broadly at how the ISA wrapper affects interest, investment income and capital gains.
When Does Savings Interest Count for Tax?
Savings interest is generally considered in the tax year in which it is received or made available to you. If interest is credited to an account and you are free to access it, it can therefore count as income for that tax year even if you choose to leave the money in the account.
Fixed-term savings can require closer attention to the account terms. If interest is credited during the term and is available to you, it can arise for tax purposes before the account matures. If the terms genuinely prevent you from accessing the interest until maturity, it may instead arise when it becomes available.
This can matter with multi-year fixed-rate accounts because several years of interest becoming available in one tax year can produce a different tax result from interest arising annually.
How Is Tax on Savings Interest Collected?
Interest from ordinary bank and building society accounts is generally paid without Income Tax being deducted first. This does not mean the interest is automatically tax-free.
Banks and building societies report interest information to HMRC. HMRC can use this information alongside details of your other income to determine whether tax is due and, depending on your circumstances, may collect it through PAYE, Simple Assessment or Self Assessment.
The way tax is collected is therefore separate from the question of whether the interest is taxable. The first step is to establish how much savings income you have and which allowances or 0% bands are available.
How Tax on Savings Interest Fits Together
The tax position becomes easier to understand when the available tax-free amounts are considered in sequence.
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Identify your relevant savings income
Bring together the taxable savings income arising during the tax year rather than considering each account in isolation.
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Consider your Personal Allowance
If your Personal Allowance has not already been fully used by other income, the unused amount can potentially cover savings interest.
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Check the Starting Rate for Savings
Depending on your other income, up to £5,000 of savings income can potentially fall within the 0% Starting Rate for Savings in 2026/27.
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Consider the Personal Savings Allowance
For 2026/27, this can provide a further 0% band of £1,000 for a basic-rate taxpayer or £500 for a higher-rate taxpayer. Additional-rate taxpayers receive no Personal Savings Allowance.
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Apply tax to anything remaining
Savings income remaining after the relevant allowances and 0% bands is charged at the applicable savings-income tax rate.
Savings interest can be taxable income without producing a tax bill. Your wider income determines which allowances and 0% savings bands are available.
Conclusion
Savings interest can form part of your taxable income without necessarily creating a tax bill. Any unused Personal Allowance, the Starting Rate for Savings and the Personal Savings Allowance can all affect how much ordinary savings interest is ultimately taxed.
The amount you can receive without paying tax therefore depends on your wider income and circumstances rather than one universal savings allowance. Eligible Cash ISA interest is treated differently because it is sheltered from UK Income Tax by the ISA wrapper.
