ISA allowance 2026/27: how much can you pay in?
You can save or invest up to £20,000 in ISAs in the 2026/27 tax year (6 April 2026 to 5 April 2027). Interest, dividends and gains inside an ISA are free of UK income tax and capital gains tax.
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How the £20,000 allowance works
The £20,000 limit is the total across all your ISAs in the tax year. You can put it all in one ISA or split it between cash, stocks and shares, Innovative Finance and Lifetime ISAs. Unused allowance cannot be carried over to the next year.
Rules and limits can change at Budgets, so check GOV.UK before you subscribe.
ISA limits
| ISA type | Yearly limit | Who can open one |
|---|---|---|
| Cash ISA | Within £20,000 | UK residents aged 16+ |
| Stocks and shares ISA | Within £20,000 | UK residents aged 18+ |
| Lifetime ISA | £4,000 (counts towards the £20,000) | Aged 18 to 39 |
| Junior ISA | £9,000 | Children under 18, opened by a parent or guardian |
What an ISA could save you
With £10,000 earning 4% a year, interest of £400 would be tax-free in an ISA. Outside an ISA a basic-rate taxpayer only pays tax on savings interest above the £1,000 Personal Savings Allowance (£500 for higher-rate taxpayers), so an ISA matters most for larger savings, higher earners and investments that grow a lot.
Sources and further reading
Questions people ask
How much can I put in an ISA in 2026/27?
Up to £20,000 across all your ISAs, and up to £9,000 for a Junior ISA.
Do I pay tax on ISA interest?
No. Interest, dividends and capital gains in an ISA are free of UK income tax and capital gains tax.
Results are estimates for information only, not financial advice. Read the full disclaimer.
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