Skip to main content
Newcastle Building Society - Home

We're sorry, but our website is not compatible with the browser you are using.

To get the best experience we would strongly advise using a more recent and compatible browser such as Google Chrome, Mozilla Firefox, Microsoft Edge or iOS Safari.

All the information you'll need on the ISA deadline 2024/2025, as well as your ISA allowance.

When is the ISA deadline?

The ISA deadline is at midnight on 5th April. 

Savers have until this time to add to their tax-free savings accounts. If savers miss this deadline, they lose any unused allowance for that tax year.

How does the ISA deadline work?

UK residents get an ISA allowance for each tax year. This dictates exactly how much you can save in a tax-free cash or investment ISA. At the end of each tax year, the ISA allowance is reset. 

This is why the end of each tax year is known as the ISA deadline. In the UK, the tax year runs from 6th April to midnight on 5th April.

Man and woman in living room smiling at each other.
What is my ISA allowance?

Every UK resident over the age of 18 has the same cash ISA allowance. The allowance for the tax year 2024/2025 is £20,000.

You can save up to £20,000, tax-free, into any combination of permitted ISAs. 

For example, you may choose to spread your savings across a cash ISA or stocks and shares. Any interest you earn on your savings doesn’t count towards your Personal Savings Allowance.

What is ISA flexibility?

Before April 2016, any money withdrawn from your ISA still counted towards your allowance, even if it was replaced. 

For example, if you were to deposit £15,000 into your ISA and then withdraw £4,000, the amount you could deposit into your account during that same tax year was only £5,000. 

This is because the £4,000, even though it’s been withdrawn, has swallowed up some of your tax-free allowance.

Fortunately, ISA flexibility introduced a little wiggle room. Now you can withdraw and replace money into your ISA without it counting towards your annual allowance. 

However, you should always consult your ISA provider to check that they offer flexibility, and whether they charge a fee for early withdrawals. This is often the case for fixed rate ISAs.

It is a condition that the money be reinvested with the same ISA provider and within the same tax year as the withdrawal.

If you have more questions about ISAs and a chat would help put your mind at rest, why not pop in to your local branch so we can talk you through your options? 

We’d love to see you and we’re always here to help you make the right decisions and connect you to a better financial future.

Branch colleague on Stokesley high street holding a coffee

Need some help?

Pop in to your local branch or give us a call, we're always happy to chat.

0345 734 4345

Our lines are open Monday to Friday from 8am - 6pm. We're closed on Saturdays, Sundays and bank holidays.

You might also be interested in:


Get a quick answer to all your ISA questions by viewing our frequently asked questions.

Find out more

Savings FAQs

Get a quick answer to all your savings questions by viewing our frequently asked questions.

Find out more

Cheque clearing system

Find the answers to our frequently asked questions about cheques.

Find out more