UK ISA 22% Tax on Cash Interest: The Compliance Nightmare Hiding Inside a Savings Policy
June 30, 2026
UK ISA 22% tax on cash interest is now official. The government confirmed on June 23, 2026, through an HMRC factsheet, that interest earned on cash held inside Stocks and Shares ISAs will face a 22% charge from April 2027. In plain terms, you could get a tax bill on money sitting in your Stocks