Key changes at a glance
- The overall adult ISA subscription limit remains £20,000 and is expected to stay frozen until April 2031
- From 6 April 2027, the annual Cash ISA subscription limit will reduce to £12,000 for individuals under 65
- Individuals aged 65 and over will retain a £20,000 Cash ISA limit, with entitlement applying from the start of the tax year in which they turn 65
- Anti-circumvention rules will prevent clients from simply using Stocks and Shares ISAs or Innovative Finance ISAs as substitute Cash ISAs
- A 22% charge will apply to interest, or alternative finance returns, paid on cash held within non-Cash ISAs
- Transfers from non-Cash ISAs into Cash ISAs will be restricted for under-65s, while Cash ISA to non-Cash ISA transfers will remain possible
- Mandatory digital ISA reporting has been deferred until April 2028, one year after the Cash ISA reforms are due to begin
- Junior ISA and Child Trust Fund limits remain £9,000, and the Lifetime ISA limit remains £4,000
