Confirmed: From 6 April 2027, under-65s will be able to contribute up to £12,000 a year to Cash ISAs, within the unchanged £20,000 overall annual ISA allowance. A typical split could be £12,000 in cash and £8,000 in stocks and shares. People aged 65 and over will retain the full £20,000 Cash ISA allowance from the start of the tax year in which they turn 65. From the same date, interest on cash held in a Stocks and Shares ISA will face a 22% charge. Under-65s will also be una