When approaching a new tax year, or even right in the middle of it, it’s always important to know where your ISA stands and when your ISA allowance will reset.
In short: your ISA allowance resets at the very start of each new UK tax year. The 2026/27 allowance ends at 23:59 on 5th April 2027, and a fresh £20,000 allowance begins at 00:00 on 6th April 2027.
Depending on the type of ISA, for example, a stocks and shares ISA or Lifetime ISA, things differ by what you can contribute in a tax year.
So why is it important to know all about your type of ISA, and what else do I need to know about when it resets?
Table of Contents
When does the ISA allowance reset?
Your ISA allowance resets at the start of each new UK tax year. The current year’s allowance ends at midnight (23:59) on 5th April, and a fresh allowance begins at 00:00 on 6th April. For the 2026/27 tax year, that means it resets on 6th April 2027.
If you max out your tax-free contributions, you will not be liable for any capital gains or income tax on the money inside your ISA, including any profits from your investments.
The overall ISA allowance is £20,000 per tax year, and the Government has confirmed it stays frozen at £20,000 until 2030.
From 6 April 2027, the amount under-65s can pay into a cash ISA each year is being cut from £20,000 to £12,000, although the overall £20,000 ISA allowance stays the same. The full £20,000 cash limit still applies from the start of the tax year in which you turn 65.
From the same date, the Government also plans to charge 22% on any interest earned on cash held inside a non-cash ISA (a stocks and shares, Lifetime or innovative finance ISA). Your investments stay tax-free and money market funds are exempt. Under-65s also will not be able to transfer money from a non-cash ISA into a cash ISA, though the reverse is still allowed. These plans were confirmed on 23 June 2026 and are still subject to consultation.
Can I pay into different ISAs as part of my allowance?
Yes, you certainly can. Your allowance can be split across several different ISAs however the final amount must always add up to £20,000 to receive your tax-free benefits.
Types of ISAs you can pay into include stocks and shares ISAs, Junior ISAs, Cash ISAs, Lifetime ISAs and Innovative Finance ISAs.
Remember, if you transfer an ISA it still has contributed to your tax allocation that year. Therefore if you’re planning on removing funds for a short period, it might be worth speaking to your provider to assess the best option.
Do I get £20,000 per ISA?
This is often where people think they should open all different types of ISA, but unfortunately, it’s £20,000 whether you have one or four accounts.
This means if you were to invest in a lump sum into your Cash ISA and Lifetime ISA at the start of the year and regular contributions to your Stocks and Shares ISA throughout the year, you cannot exceed the £20,000 limit.
It’s also worth checking the rules per type of ISA you have as a Lifetime ISA only allows £4,000 worth of contribution per annum to receive the 25% government bonus.
It’s also worth considering how many stocks and shares ISAs you can have as some are restricting.
What happens if I reach the £20,000 limit?
Your provider often will be able to let you know, or they’ll have a section of the app which will show you.
If you overpay into an ISA and go above your contribution, then you won’t receive any tax benefits on those contributions.
There is no penalty or anything like that, but it’s important to note you’ll need to declare any extra payments to the tax man.
If you do not use all of your ISA allowances, they do not carry over into a new tax year. Remember, once the new tax year begins on 6th April, your used allowance resets to zero and you start fresh with a new £20,000 (any unused allowance from the year before is gone for good).
If I already have an ISA, can I transfer it?
Transferring an ISA is not complicated; you can move providers quickly (most are within 30 days), but it can be much faster in some cases.
You’ll often need to submit an ISA transfer form or go directly to your providers and ask them to start the process. Each provider is different.
If you want to transfer within a current tax year, then your total tax year contributions should be moved to keep things simple.
The money you’ve built up from previous tax years can also be moved over, but the amount you wish to move is up to you.
For example, if you had saved £10,000 this tax year, you would need to move the full £10k over.
Then if you had £50,000 saved from previous tax years, you could decide only to move half of that or whatever amount you choose. That’s entirely up to you.
How to make the most of my ISA allowance?
If you can’t reach the £20,000, then fear not. It doesn’t matter if you put £10 in a year. Essentially any contribution is better than none.
You can look at re-budgeting if you’re looking for ways to maximise your allowance in the lead-up to a new tax year.
If you’re keen to reach the limit but are just going to miss out, why not challenge yourself to make a more significant contribution each week or month to see if you can get there?
There’s no badge or medal for reaching the limit, so be sure that whatever you commit is something you can afford.
If you’re doing things super last minute (we all do it), remember you have until 23:59 on 5th April 2027 to pay money in.
Be sure, if you’re going to make that last-minute payment, contact your bank to confirm it was in before the new tax year starts.
Conclusion
If you’re worried about anything at all, the best solution is to call your provider and discuss your options. Lots of them have fantastic tools and ideas to help you maximise contributions.
If you’ve managed to max out your tax allowance this year, then fantastic; now you know when my ISA allowance resets each year.
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Disclaimer: Content on this page is for informational purposes and does not constitute financial advice. Always do your own research before making a financially related decision.
