These new ISA changes could affect millions – here’s how to stay one step ahead
Vicky Parry
30 June 2026
Study Time: 5 minutes
For years, ISAs have been one of the easiest ways for ordinary people to protect their money from tax. Whether you’re using yours to save for a rainy day, a house deposit, retirement planning or long-term investing, the rules are easy to understand: you get an annual allowance, and anything inside the ISA wrapper is tax-sheltered.
But that ease is about to change.
The government has confirmed new ISA rules will come into effect 6 April 2027. These changes are aimed at encouraging more people to invest rather than keep large sums of money. But for millions of savers, especially those who rely on Cash ISAs for peace of mind, the announcement may feel confusing – and a little worrying.
The good news is that nothing is changing quickly. Savers still have time to understand the new rules, review where their money is held and make a plan before the changes come.
📌 Key take
Cash ISAs don’t go away. But from April 2027, under-65s will be able to put £12,000 a year into a Cash ISA. The full ISA allowance will remain at £20,000, but the rest will need to go into another type of ISA, such as a Stocks and Shares ISA.
What’s changing with Cash ISAs?
At the moment, most adults can tolerate it £20,000 a year in ISAs. That can be held in cash, invested, or split between different types of ISA.
From April 2027, the total ISA amount will be £20,000. However, if you are under the age of 65, only £12,000 that can go into a Cash ISA.
Adults 65 and above you will keep the full £20,000 Cash ISA allowance.
💷 Simple example
If you are under 65 and want to use your full ISA allowance from April 2027, you can deposit:
You will still be using the full grant of £20,000 – but not all of it would stay in the money.
What’s changing with Stocks and Shares ISAs?
The ISA limit for Shares and Shares is not cut. You will still be able to invest up to the annual ISA allowance.
However, there is an important change for anyone who leaves cash sitting within a Stocks and Dividends ISA.
From April 2027, interest earned on money held within a Stocks and Shares ISA will face a new charge of 22%.. This is designed to stop people using an investment ISA as a way to make up for the lower limit of a Cash ISA.
💬 Expert view
“The Stocks and Dividends ISA is still one of the most powerful tax-free accounts available, but it’s designed to invest money — not park large sums of money.”
“If you’re holding cash in your investment ISA while you decide what to do next, don’t panic. But make sure you have a plan. Cash can be useful in the short term, but in the long term savers should think carefully about whether that money should be invested, held in a Cash ISA, or held elsewhere depending on their goals and risk appetite.”
Ruby Layram, Investment Editor at MoneyMagpie
Should you rush into investing?
No. This is where conservationists need to be careful.
The government may want more people to invest, but investing is not right for everyone. Investments can go up and down, and you might get back less than you put in.
If you need your money soon – for example for bills, a house deposit, maintenance costs or an emergency fund – cash may still be the right place.
⚠️ Don’t panic invest money
- Keep an emergency fund in cash.
- It’s the only investment you can leave alone for a long time.
- Make sure you understand the risks before choosing an investment.
A wrong investment decision can cost more than a missed tax benefit.
What about ISA transfers?
There are also new money transfer rules coming.
From April 2027, under-65s will no longer be able to transfer money from a non-cash ISA, such as a Stock and Shares ISA, to a Cash ISA.
However, transfers from a Cash ISA to a stocks and shares ISA will still be allowed.
In plain English
If you are under 65, the Government wants to stop people withdrawing cash ISA investments to reach the new £12,000 Cash ISA limit.
Will existing ISA savings be affected?
The Cash ISA lower limit applies to new contributions from April 2027. Money already in ISAs must remain inside the ISA wrapper.
However, the changes may affect what you do with future contributions and how you manage cash within investment ISAs.
✅ What can savers do now
- Use your current ISA allowance if you can afford it.
- Review how much money you have in ISAs.
- Check if you have uninvested money sitting within a Stocks and Shares ISA.
- Think carefully before moving money between ISA types.
- Consider advice if you’re not sure what’s right for you.
How to protect your savings
The best way to protect your savings is to give each pot of money a clear job.
Emergency funds should generally be easy to access and low risk. Money for short-term goals may also be better kept in cash. But money you don’t need for several years may be worth investing in, depending on your circumstances.
If you usually use your full Cash ISA allowance, the new rules may mean you need to reconsider your approach before April 2027.
A quick checklist
- Do I need this money within five years?
- Is my emergency fund easy to access?
- Am I using my ISA money wisely?
- Do I understand the risks of investing?
- Am I leaving too much money in a Stocks and Shares ISA?
An important point
The ISA changes may sound scary, but they don’t mean that ISAs are no longer worth using.
Cash ISAs are still useful for short-term savings and emergency funds. Stocks and Shares ISAs are still one of the most tax-free ways to invest over the long term.
The important thing is not to panic. The rules are not due to change until April 2027, so savers have time to review their money and make informed decisions.
MoneyMagpie tip
If you are under 65 and regularly save large sums in Cash ISAs, now is a good time to review your options.
The goal is not to move money in a hurry. It’s to make sure your savings are in the right place before the rules change.
Frequently Asked Questions
When do the ISA rules change?
Changes must start from 6 April 2027.
What will the new Cash ISA limit be?
For under-65s, the Cash ISA limit will fall £12,000 a year. The total ISA allowance will remain at £20,000.
Will over-65s still get the full Cash ISA?
Yes. People aged 65 and over will still be able to put up to £20,000 a year into a Cash ISA.
What happens to money inside a Stocks and Shares ISA?
From April 2027, interest earned on money held within a Stocks and Shares ISA will be subject to 22%..
Should I transfer my ISA money now?
There is no need to panic. The changes don’t start until April 2027, but it’s wise to review your savings and investment plans ahead of time.
This article is for information only and does not constitute financial advice. Investments may go up and down, and you may return less than what you invested.
