What is the ISA limit?

The exceptions to that are:

• Currently you can only pay £4,000 a year into a Lifetime ISA or £9,000 a year into a Junior ISA.
• From April 2027, if you’re 64 or under you’ll only be able to pay £12,000 a year into Cash ISAs.

Once you’ve reached these specific ISA limits, you can put any remaining money into any other type of ISA. So, for example, if you put £4,000 into a Lifetime ISA and £9,000 into a stocks and shares ISA, you’d be able to put £7,000 into any other type of ISA during the same tax year.

The ISA limit resets every tax year. You can’t carry any of it over into the next tax year or share it with anyone else – even a partner or a spouse.

What's the stocks and shares ISA limit?

The stocks and shares ISA yearly limit is £20,000. Unlike the Cash ISA one, it’s not going to change in April 2027. You can learn more about these changes in our article on the Autumn Budget.

What happens if you go over your £20k ISA limit?

Going over your £20,000 ISA limit is not a good idea. That’s because any income you earn on any money over that limit will be taxable. You may have to pay income tax or capital gains tax on any profits you earn on it.

If you do invest more than £20,000 in one or more ISAs during a single year, you should pull that extra money back out as soon as possible. If you don’t, HMRC will spot it after the tax year’s end on 5 April. They’ll work out how much tax you owe and tell your provider to return the extra money to you.  

Is there a maximum amount you can have in an ISA?

There’s no maximum amount you can have in an ISA. There’s also no limit on the number of ISAs you can take out. There are some limits on how many you can pay into in any one year – for example, you can only pay into one Lifetime ISA each year. And some providers might limit the number of ISAs you can have with them.