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Cash ISA

A tax-free cash savings account for UK adults. All interest earned inside a Cash ISA is completely free of income tax, making it the simplest tax shelter available.

Key Facts

Annual limit: £20,000 (shared across all ISA types)
Tax on interest: None — completely tax-free
Access: Instant — withdraw anytime
Age requirement: 18+

How It Works

You open a Cash ISA with a bank or building society and deposit up to £20,000 per tax year. The interest you earn is completely tax-free. You can withdraw money at any time. Your ISA allowance resets every 6 April.

Tax Treatment

Interest earned is entirely free of UK income tax. Does not count towards the Personal Savings Allowance.

Tax Advantages

  • All interest is free of income tax regardless of your tax band
  • Does not use your Personal Savings Allowance
  • No need to declare ISA interest on your tax return

Who Is This Suitable For?

Anyone who wants a risk-free, tax-free home for cash savings. Particularly useful for higher rate taxpayers.

See Your Full Extraction Plan

Use our free calculator to see how Cash ISA fits into your overall tax-efficient extraction strategy.

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Frequently Asked Questions

Can I have more than one Cash ISA?

Yes, since April 2024 you can open multiple ISAs of the same type, as long as total contributions across all ISAs do not exceed £20,000.

What happens to my ISA if I die?

Your spouse or civil partner can inherit an additional ISA allowance equal to the value of your ISA through the Additional Permitted Subscription (APS) rules.

Can I transfer my Cash ISA to a Stocks & Shares ISA?

Yes, you can transfer between ISA types without it counting towards your annual allowance. The transfer must be done through the new provider.

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