The Government has announced changes to Cash ISA subscription limits that are expected to take effect from 6 April 2027, subject to legislation and ISA rules. For many savers, these changes may affect how much they can pay into a Cash ISA in future tax years.

Understanding what is changing, who may be affected and what remains the same can help you make informed decisions about your savings.

What is changing?

From 6 April 2027, the Government intends to reduce the Cash ISA subscription limit for investors under age 65 from £20,000 to £12,000 per tax year. However, the overall ISA allowance is expected to remain £20,000.

This means some savers may have greater flexibility to place part of their annual ISA allowance into other ISA types, while the amount that can be subscribed to a Cash ISA may be lower than under current rules. [

What is staying the same?

While the proposed changes affect Cash ISA subscription limits, several key features of ISAs are expected to remain unchanged:

The overall ISA allowance remains £20,000 per tax year.
Existing ISA savings are unaffected by the planned changes.
Interest earned within a Cash ISA remains tax-free under current ISA rules.
ISA allowances will continue to reset at the start of each tax year.

Who could be affected?

The proposed changes are expected to affect ISA savers under the age of 65 who regularly subscribe more than £12,000 into Cash ISAs during a tax year.

Savers who contribute less than £12,000 to Cash ISAs each tax year may see little or no practical difference, depending on their individual circumstances.

What about savers aged 65 and over?

The Government has announced that investors aged 65 and over will retain a Cash ISA subscription limit of £20,000 per tax year.

As with all ISA rules, this remains subject to legislation and any future Government announcements.

Do I need to do anything now?

For many savers, there is no immediate action required.

The proposed changes are not due to take effect until 6 April 2027, and current ISA allowances and subscription limits remain in place until then.

However, some savers may wish to familiarise themselves with the planned changes and consider how they could affect future saving arrangements.

Where can I find the latest information?

Government policy and ISA rules can change over time.

For the latest updates, visit the Government's guide to ISAs and official announcements on GOV.UK

You can also keep up to date through Hanley Economics’ ISA Help Hub, where we'll continue to explain any significant developments affecting ISA savers.

Frequently asked questions

Are the changes already in force?

No. The proposed changes are expected to take effect from 6 April 2027. Current Cash ISA limits remain unchanged until then.

Will my existing ISA be affected?

The Government's announcement relates to future subscriptions. Existing ISA balances remain protected within the ISA wrapper.

Is the overall ISA allowance changing?

No. The overall ISA allowance is expected to remain £20,000 per tax year.

Can ISA rules change again?

Yes. ISA rules are set by the Government and may change in future tax years. Savers should always check the latest guidance before making decisions.

Information correct at the time of publication

This article is intended as a guide only and reflects Government announcements and ISA rules available at the time of publication. ISA rules, allowances and eligibility criteria may change in future. For the latest information, please refer to the official gov.uk website: https://www.gov.uk/individual-savings-accounts

In summary

The Government has announced plans to reduce the Cash ISA subscription limit for savers under age 65 from 6 April 2027, while retaining the overall ISA allowance of £20,000. While the changes may not affect all savers, understanding how the new rules could apply to you can help you stay informed and plan ahead.

Explore our ISA options

Whether you're opening your first ISA, making use of your annual allowance or reviewing your savings arrangements ahead of future changes, understanding your options is an important first step.

At Hanley Economic Building Society, we offer a range of ISA savings accounts designed to help members save tax-efficiently. Explore our ISA products, learn more about how ISAs work and speak to our Savings Team if you have any questions about our accounts.

Please read the relevant product terms and conditions before applying, as eligibility, account features and access requirements may vary between products.

Upcoming ISA changes explained