UK ISA Allowance & Tax Calculator 2026/27
Check your 2026/27 ISA subscriptions against the £20,000 overall allowance and understand the Cash ISA reform that starts from 6 April 2027.
ISA Allowance & Allocation Tool
Check 2026/27 ISA subscriptions against the current £20,000 annual allowance.
2026/27 ISA Allowance Status
2026/27 ISA Types & Limits
The ISA tax year runs from 6 April to 5 April. For 2026/27, the overall annual subscription limit is £20,000. The government has announced a new Cash ISA limit for investors under 65 from 6 April 2027, but that reform is not part of the 2026/27 allowance.
| ISA Type | 2026/27 Limit | Key Rule |
|---|---|---|
| Cash ISA | Up to £20,000 within the overall ISA allowance | No £12,000 under-65 cap until 2027/28 |
| Stocks & Shares ISA | Uses the £20,000 overall allowance | Investments and income/gains inside the ISA receive UK ISA tax treatment |
| Innovative Finance ISA | Uses the £20,000 overall allowance | Subject to its own permitted-investment rules |
| Lifetime ISA | £4,000 | Counts towards the £20,000 overall allowance |
| Junior ISA | £9,000 | Separate child allowance |
Cash ISA Reform from 6 April 2027
| Investor | Cash ISA annual limit from 6 April 2027 | Overall ISA limit |
|---|---|---|
| Under 65 | £12,000 | £20,000 |
| 65 or over | £20,000 | £20,000 |
The new under-65 Cash ISA limit starts on 6 April 2027. Therefore, an under-65 saver can still use up to the full £20,000 overall allowance for Cash ISA subscriptions during 2026/27, subject to the normal ISA rules.
Multiple ISAs in the Same Tax Year
Since 6 April 2024, investors can subscribe to multiple ISAs of the same type during a tax year, provided they remain within the applicable annual subscription limits.
- You can subscribe to more than one Cash ISA in the same tax year.
- You can subscribe to more than one Stocks & Shares ISA in the same tax year.
- You can split the £20,000 annual allowance across different ISA types.
- Lifetime ISA subscriptions remain subject to the one-LISA subscription rule per tax year.
- Junior ISA rules are separate and the child can have one Cash JISA, one Stocks & Shares JISA, or both.
Lifetime ISA and Junior ISA
Lifetime ISA
- Maximum contribution: £4,000 per tax year.
- Government bonus: 25%, up to £1,000 per year.
- The £4,000 counts towards the £20,000 overall ISA allowance.
- First payment must be made before age 40; contributions can continue until age 50.
Junior ISA
- 2026/27 limit: £9,000 per child.
- The allowance is separate from the adult £20,000 ISA allowance.
- A child can have both a Cash JISA and Stocks & Shares JISA.
- The child normally takes control at 16 but cannot withdraw until age 18.
Moving Abroad and UK ISAs
If you become non-UK resident after opening a UK ISA, you can normally keep the ISA open and retain the UK tax advantages on money and investments already held in it.
You normally cannot make new ISA subscriptions while non-UK resident, except for specified Crown servant, armed-forces and qualifying spouse/civil-partner situations. You should also check whether your new country of residence recognises the UK ISA tax shelter.
Frequently Asked Questions (6)
2026/27 ISA Quick Reference
International Money Transfer & FX Rates
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Important
This calculator checks subscription amounts only. It does not determine your tax residence, foreign tax liability or whether a specific investment is a permitted ISA investment.