An ISA allowance is the maximum amount you can save or invest into an Individual Savings Account (ISA) each tax year without paying tax on the interest, dividends, or investment gains you earn. For the 2026/27 tax year, the annual ISA allowance remains £20,000 per individual.
This means you can save or invest up to £20,000 across different types of ISAs, including a Cash ISA, Stocks and Shares ISA, Lifetime ISA (LISA), and Innovative Finance ISA, while keeping the returns protected from Income Tax and Capital Gains Tax.
Understanding how the ISA allowance works can help you make better decisions about tax-efficient savings and long-term financial planning.
How Does the ISA Allowance Work?
The ISA allowance is a yearly limit set by the government that determines how much money you can contribute to your ISA accounts during a tax year.
For the 2026/27 tax year, which runs from 6 April 2026 to 5 April 2027, you can contribute up to:
£20,000 total across all your ISA accounts
You can choose to:
- Put the full £20,000 into one ISA account.
- Split your allowance between different ISA types.
- Combine cash savings and investments within your annual limit.
For example, you could invest:
- £10,000 into a Cash ISA.
- £6,000 into a Stocks and Shares ISA.
- £4,000 into a Lifetime ISA.
As long as your total contributions do not exceed £20,000, you will remain within your annual ISA allowance.
What Is the Current ISA Allowance in the UK?
The current UK ISA allowance for the 2026/27 tax year is £20,000.
This allowance applies to adults aged 18 or over who are eligible to open an ISA account. Any money placed into an ISA benefits from tax-free growth, meaning you do not pay tax on:
- Interest earned from savings.
- Dividends from investments.
- Capital gains made from investments.
However, the ISA allowance works on a use it or lose it basis. If you do not use your full allowance before the end of the tax year, you cannot normally carry the unused amount forward.
Your allowance resets on 6 April each year.
Types of ISA Accounts and Their Allowances
Different ISA products are designed for different financial goals. Each type has specific rules and limits.
Cash ISA Allowance
A Cash ISA allows you to save money while earning tax-free interest.
You can contribute up to your full £20,000 ISA allowance into a Cash ISA if you choose. It is generally considered a lower-risk option because your money is held as cash rather than invested in markets.
Cash ISAs are commonly used by people who want:
- Secure savings.
- Predictable interest returns.
- Protection from Income Tax on savings interest.
Stocks and Shares ISA Allowance
A Stocks and Shares ISA allows you to invest your money into assets such as:
- Shares.
- Investment funds.
- Bonds.
- Other approved investments.
Any investment growth, dividends, or capital gains generated within the ISA are protected from tax.
This option may be suitable for individuals looking for long-term growth, although investments can rise and fall in value.
Lifetime ISA (LISA) Allowance
A Lifetime ISA is designed to help people save towards:
- Buying their first home.
- Retirement planning.
The annual Lifetime ISA contribution limit is £4,000 per tax year.
This £4,000 forms part of your overall £20,000 ISA allowance.
The government adds a 25% bonus on eligible Lifetime ISA contributions, meaning you can receive up to £1,000 a year in government bonuses.
Junior ISA (JISA) Allowance
A Junior ISA allows parents or guardians to save money on behalf of a child.
For the 2026/27 tax year, the Junior ISA allowance is £9,000 per child.
The money belongs to the child and becomes accessible when they turn 18. At this point, the Junior ISA normally converts into an adult ISA.
The Junior ISA allowance does not reduce the parent’s personal ISA allowance.
Innovative Finance ISA Allowance
An Innovative Finance ISA allows investment through peer-to-peer lending platforms and other alternative finance arrangements.
Like other ISA types, contributions count towards your overall £20,000 annual ISA allowance.
How Many ISAs would I be able to have?
There’s no particular cutoff for the number of ISAs you can hold generally speaking – yet you can just compensate into one kind of each ISA in each duty year (we clarify this all the more completely beneath).
There are limits on certain sorts of ISAs, be that as it may. You can have a few cash ISAs, stocks and offers ISAs, creative money ISAs and lifetime ISAs, and just compensation into one every year – yet you can just have each Help to Buy ISA in turn.
What Number of Isas Would I Be Able to Pay in One Year?
As well as just having the option to pay in a specific measure of cash in each expense year, another limitation is that you can just compensate into one of every sort of ISA in a similar assessment year.
This implies you can just set aside new instalments into one cash ISA (on the off chance that you have a Help to Buy ISA this is considered to be your cash ISA alternative), one stock and offers ISA, one inventive money ISA and one Lifetime ISA.
If you’ve effectively paid into, say, a cash ISA and see a superior rate available, you might in any case have the option to exploit it by moving your ISA investment funds to the new supplier.
To move cash you’ve paid in the current expense year, you should move every last bit of it.
What Happens to Your ISA Allowance When You Die?
If you are married or in a civil partnership, your spouse or civil partner may receive an additional ISA allowance after your death.
This is known as an Additional Permitted Subscription (APS).
The APS allows your partner to inherit an allowance equal to the value of your ISA savings at the date of death, even though the ISA itself may pass to someone else.
This helps couples maintain the tax-efficient benefits of ISA savings.
How Accotax Can Help With Tax-Efficient Financial Planning
Understanding your ISA allowance is an important part of effective personal tax planning. At Accotax, our experienced UK tax advisers help individuals and businesses understand tax-efficient strategies, savings options, and financial decisions that align with their circumstances.
Whether you need guidance on personal tax planning, investment income, or managing your wider tax obligations, our team can provide professional support to help you make informed decisions.
Final Thoughts
The ISA allowance allows UK savers and investors to build wealth without paying tax on qualifying returns. With a current annual limit of £20,000, understanding ISA rules, contribution limits, and different account options can help you maximise your tax-free savings opportunities.
By using your allowance effectively each tax year and choosing the right ISA type for your goals, you can create a more efficient approach to saving and investing.
Disclaimer: The information about ISA Allowance, provided in this article including text and graphics. It does not intend to disregard any of the professional advice.
