Latest News About HMRC's 2027 ISA cash tax crackdown starts April

The UK tax authority HMRC will apply a new charge when the rule comes into effect in April 2027. Cash kept inside stocks and shares ISAs will incur a 22% tax on any interest earned. The measure focuses on savers who keep cash in these tax‑free wrappers. It seeks to stop the practice of using ISAs to protect interest without investment risk. Existing cash balances will be liable for the charge from the start date. The change will hit new and existing accounts alike.

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