top of page
  • Writer's pictureJordan White DipPFS

What happens to your ISA at the end of the 2023-24 tax year?

Updated: May 14

One of the fundamentals of good financial planning is to make use of your annual ISA allowance.

Thanks to its status as a tax-efficient product, funnelling money into an ISA protects your cash from tax, helping it grow faster and giving you more back when you want to withdraw your money.

If this is your first year holding an ISA, you might be wondering what happens when the tax year ends.

The ISA Basics

  • You have an annual ISA allowance of £20,000.

  • If you don’t use up all your allowance by the end of the tax year, you lose it.

  • Your £20,000 allowance can be spread across the 4 types of ISAs; Cash ISA, Stocks and Shares (Investment) ISA, Innovative Finance ISA and Lifetime ISA (LISA)

  • You can only pay into one of each type of ISA each tax year. From April 6th 2024, you will be able to pay into more than one of each type of ISA.

  • On April 6th, your ISA annual allowance resets and you get £20,000 to use again.

  • The tax year runs from April 6th to April 5th the following year.

Most people will have a Cash ISA or a Stocks and Shares ISA. If you’re specifically saving to buy a home, then you might have a Lifetime ISA.

What happens at the end of the tax year?

Think of each tax year as a countdown clock. When the tax year ends, the clock simply resets. The new tax year starts the day after, and you can start using a new £20,000 allowance right through to April 5th the following year.

Your ISA that was ‘active’ - the one you were paying money into - on April 5TH is still open. It doesn’t just close. There is no ‘maturity’ date unless you’re using a fixed rate Cash ISA.

The tax benefits of your ISA continue for as long as your ISA is open, beyond the end of the tax year.

ISA Options at the start of a new tax year

Continue paying into your ISA

If you’re happy to continue putting money into it, this becomes your ISA for the current tax year. It simply rolls over. There’s nothing to approve or sign. As soon as you make a payment into it, you’ve assigned it as your ISA for the tax year.

Open a new ISA

Your alternative option is to basically put that ISA aside and open a new ISA with a different provider.

Let’s use an example to demonstrate:

In the current tax year, you have a Stocks and Shares ISA and you’ve contributed £5000 of your annual £20,000 allowance to it.

The new tax year starts. You decide you want to open a new ISA with a different provider. That new ISA becomes your ‘active’ ISA that you can pay in to.

You can no longer pay into your ISA from the previous year. If you do, you may face a penalty charge.

Your old ISA is still open and able to benefit from growth. You are also allowed to withdraw money from it whenever you like. If your particular ISA pays you dividends, these will continue to be paid to you.

Does transferring an ISA use up my annual allowance?

If you open a new ISA, you can transfer your previous ISA(s) to your new ISA without your current annual allowance being reduced.

Usually, transferring old ISAs keeps things simple as opposed to the admin of keeping an eye on various different ISAs over the years.

Transferring an ISA should usually be free but always check with your provider.

Let’s say you had an ISA last year with a value of £5,000.

You open a new ISA this year and start contributing money. At the same time, you decide to transfer last year’s ISA to this new ISA. That £5,000 does not reduce your £20,000 allowance by £5,000.

It’s simply taking your previous yearly contributions and consolidating them.

Can I transfer between a Cash ISA and a Stocks and Shares ISA?

Yes, you can transfer funds from a cash ISA to a stocks and shares ISA, and vice versa.

If you transfer an ISA that you have paid into during the current tax year to a new provider, you must transfer the whole balance. If you're transferring money from an ISA opened in a previous tax year, you can do a full transfer or a partial transfer.

If you're thinking of transferring funds from a stocks and shares ISA to a cash ISA, remember that you can typically hold cash within a stocks and shares ISA. Check the interest rate though as it may not be as good as a standard cash ISA.

Make sure that you follow the correct procedure for transferring. It's important that you don't withdraw funds as this will mean you lose the ISA allowance benefits. For example, if you want to transfer £5,000 and you withdraw it to your bank and then paid it into another ISA, this would use up £5,000 of your annual allowance.

Can I transfer my Cash ISA to a new provider and open up another Cash ISA too?

The rule is you can open as many Cash ISAs as you like in one tax year. But you can only subscribe (pay money in) to one Cash ISA each tax year. Transferring an ISA counts as opening a new ISA.

So in the the new tax year, you could transfer your current ISA to a new provider (opening) and subscribe to another Cash ISA (pay money into it) too.


I have a Cash ISA with £10,000 in it, but I'm not happy with the interest rate on it.

I decide to switch it to a new provider to get a better interest rate. But I don't put anymore money into it.

During the same tax year that I transfer the ISA, I also open another ISA with a different provider. I pay money into this ISA within my annual allowance. I can't pay into any other ISAs for the rest of the tax year.


When we're thinking of saving or investing, making use of our ISA annual allowance is good financial planning.

Regarding the end of the tax year, the main thing to think about is maximising your contributions within your allowance before the tax year ends, otherwise you'll lose it.

There's no need to do anything else in terms of admin.


Recent Posts

See All

1 bình luận

Jittawat Boonchuay
Jittawat Boonchuay
27 thg 11, 2023

SLOT TRUE WALLET เว็บตรง สล็อตอัพเดทใหม่ มาแรงในปี 2023

เว็บสล็อตออนไลน์มาแรงในเอเชีย มาพร้อมกับระบบ SLOT TRUE WALLET รองรับผู้เล่นทุกวัย RUAYJING168 มีระบบ Auto สล็อตวอเลทเว็บตรง ที่มีความรวดเร็วทันใจ ทำรายการเพียง 5 วินาทีเท่านั้น ไม่ต้องรอนานอีกต่อไป ตอบโจทย์สำหรับนักปั่นสล็อตทุกท่าน SLOT TRUE WALLET สมัครสมาชิกไม่มีขั้นต่ำ ไม่ว่าจะเพียง 1 บาทก็สามารถสมัครสมาชิกได้แล้ววันนี้ตลอด 24 ชั่วโมง

<a href="เว็บสล็อต-api/">เว็บสล็อต api</a>

bottom of page