From 6 April 2027, the annual limit on the amount that can be paid into a cash ISA will be reduced to £12,000 for people aged under 65, down from the current £20,000 limit. The overall annual ISA allowance will stay at £20,000, meaning the remaining £8,000 can be used in other ISA types, like a stocks and shares ISA.
While this change is still some way off, it has already prompted many savers to rethink how they use cash and investments together.
New research from Barclays* suggests that rules alone do not change behaviour. Confidence, understanding, and planning still matter most.
What is changing with cash ISAs
At present, people can contribute up to the full ISA allowance into cash savings. From April 2027, the maximum that under‑65s can place into cash ISAs each year will reduce.
This does not remove cash ISAs or make cash saving ‘wrong’. Cash remains useful for short‑term needs and financial security. But the change highlights the importance of deciding what different pots of money are for.
How people say they might respond
According to the research, people who already invest are more likely to say they would consider investing any excess above the future cash limit. Among non‑investors, that intention is much lower.
This difference reinforces a wider finding from Barclays’ Investment Readiness Index: engagement and confidence, not just policy changes, shape how people use their money.
