Glossary · Savings

ISA allowance

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Content updated: 26 May 2026

By the Money Guide editorial team · Editorial responsibility: Kaiser Khan, Editorial Director · How we check facts

Definition: The maximum you can pay into your adult ISAs each tax year — £20,000 for 2026/27.

Junior ISAs have a separate £9,000 allowance per child. Lifetime ISA contributions of up to £4,000 count towards the £20,000 adult limit. Allowances do not roll over to the next tax year if unused.

Primary source: gov.uk/individual-savings-accounts

More Savings terms

AER (Annual Equivalent Rate)
Cash ISA
ISA (Individual Savings Account)
Junior ISA
Lifetime ISA (LISA)
NS&I (National Savings & Investments)

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