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Over 5,000 ISA Millionaires as 2026 ISA Contribution Deadline Approaches

Thursday, March 5, 2026 isa millionaires hmrc investing savings finance compounding allowance tax deadline

In 2023, more than 5,000 individuals had amassed ISA pots worth over £1 million, according to data obtained by money app Plum through a Freedom of Information request to HM Revenue and Customs (HMRC). This milestone highlights the growing number of savers benefiting from tax-free wealth accumulation through ISAs. HMRC’s data revealed that by April 2023, approximately 5,070 ISA holders had pots exceeding £1 million. Additionally, in the 2022-23 tax year, 1,240 ISA investors had accounts valued between £950,000 and £999,999, while another 1,530 held pots worth £900,000 to £949,999.