The Treasury announced that the Lifetime ISA is being replaced with a new, simpler ISA designed to help first-time buyers only. In November, Chancellor Rachel Reeves announced further ISA changes designed to encourage more savers to invest, according to Alice Haine, Personal Finance Analyst at Bestinvest by Evelyn Partners. It has been reported that the new first-time buyer-only ISA could launch in 2028. Rules governing cash savings in Individual Savings Accounts are set to change from April 2027, Haine noted in her research.
Specific changes will see the cash ISA allowance drop to £12,000 for under-65s from April 2027 under changes announced by chancellor Rachel Reeves at last year’s Budget. Savers aged 65 and over will be exempt from the new cash ISA limit reduction and retain the current allowance, according to multiple reports. From April 2027, you will only be able to use up to £12,000 of the ISA allowance as you choose, while the remaining £8,000 will have to be used for investment-based accounts, multiple reports indicate. Additional measures are planned to deter holding cash balances within Stocks & Shares ISAs from April 2027, though final details are still being ironed out, according to Haine's research.
Lifetime ISA holders will be able to keep using their account. According to the most recent official data, the number of live Lifetime ISA accounts is almost a million, with 964,000 in 2023-24. There have been estimates that up to 45% of Lifetime ISA holders are using the account to save for retirement. Subscriptions made in the 2025-26 or 2026-27 financial years still fall under the existing ISA framework, Haine's research indicates, providing a transition period.
The new tax year started on April 6, 2026, according to multiple reports. ISA allowances must be used by midnight on April 5 each year and cannot be carried forward, Haine noted in her research. Unused ISA allowance does not roll over to the next tax year. The 2021-22 tax year will be closed for backdated claims after April 5, 2026, multiple reports indicate, creating deadline pressures for those seeking to rectify past filings.
Broader ISA usage statistics show there are around 10 million cash ISAs and 4 million stocks and shares ISAs in the UK, according to multiple reports. New research from HSBC has revealed that 39% of UK adults do not have an ISA. HSBC's nationally representative study found 44% of UK adults hold a cash ISA, 21% hold a stocks and shares ISA, and 12% contribute to both. HSBC revealed that only 23% of ISA holders anticipate using their full £20,000 allowance this tax year.
Financial incentives remain strong, with Martin Lewis highlighting that Trading 212 offers a 4.68% rate on its Cash ISA for new customers. Multiple reports indicate HSBC offers a 4.5% interest rate on its Fixed Rate Cash ISA. Analysis reveals that investing early in the tax year can deliver a £25,000 boost over time compared to investing at the last minute. These product examples come amid what Haine described as a focus on using the current £20,000 ISA allowance.
Related tax changes affecting savings and investments include basic rate taxpayers being able to earn up to £1,000 in interest tax-free outside ISAs, higher rate taxpayers £500, and additional rate taxpayers £0, according to multiple reports. The Capital Gains Tax allowance is £3,000 for the 2025/26 tax year, multiple reports indicate. The Dividend Allowance is £500 for the 2025/26 tax year, according to multiple reports. Chancellor Rachel Reeves extended the freeze on income tax thresholds until April 2031 in the recent Autumn Budget, Haine noted in her research. Tax rates on dividends will increase by 2 percentage points from April 2026, according to Haine's research.
Marriage allowance and pension contribution rules offer additional tax planning opportunities. Antonia Medlicott said the marriage allowance allows transferring up to £1,260 of personal allowance between spouses if one earns below £12,570 and the other is a basic rate taxpayer. It's estimated that around two million couples are not claiming the marriage allowance despite being eligible. Medlicott also said the pension contribution limit is £60,000 per tax year with tax relief. The current uptake rate of the marriage allowance among eligible couples remains unclear.
Expert analysis emphasizes that ISAs allow savers to grow wealth and generate income without a punitive tax bill, according to Haine's research. There is still time in the current financial year to maximise ISA allowances and move assets across before tax hikes on dividends and interest come in, Haine noted in her research. Money or investments held within an ISA are sheltered from tax on income and capital gains year after year, Haine's research indicates. This strategic timing is crucial as Haine warned that the move against cash savings in ISAs has attracted widespread criticism for increasing complexity without delivering a meaningful boost to long-term investing.
Historical context shows ISAs were launched in April 1999 and have undergone repeated tweaks, according to Haine's research. Subscriptions made in the 2025-26 or 2026-27 financial years still fall under the existing ISA framework, Haine noted, indicating ongoing policy development. The official Treasury timeline for finalizing and announcing the details of the new ISA rules has not been specified.
Key uncertainties remain about what specific additional measures will be implemented to deter holding cash balances within Stocks & Shares ISAs from April 2027. The exact launch date for the new first-time buyer-only ISA is also not confirmed. How the replacement of the Lifetime ISA will affect existing holders' benefits and withdrawal rules is another pending detail. Martin Lewis warned that millions of tax codes are wrong each year, adding to administrative challenges facing savers navigating these changes.