How Many ISAs Can I Have? The UK Rules, Simply Explained

The short answer: you can hold as many ISAs as you like, and since the 2024/25 tax year you can even pay into more than one ISA of the same type in a single year. The catch is that your annual allowance is one shared pot across all of them. Here is what that means in practice.

How many ISAs can you have?

There is no limit on the total number of ISAs you can own. Over the years you might accumulate several cash ISAs, a few stocks and shares ISAs, a Lifetime ISA and an innovative finance ISA. They all keep their tax-free status for as long as you hold them.

What changed in April 2024 is that you can now open and pay into multiple ISAs of the same type in the same tax year. Previously you could only subscribe to one of each type per year. The one exception is the Lifetime ISA, where you can still only pay into one per year.

The one rule that actually matters: the £20,000 allowance

However many ISAs you hold, you can only pay in a total of £20,000 across all of them in a tax year. The allowance is attached to you, not to each account. So you could put £10,000 in a cash ISA and £10,000 in a stocks and shares ISA, or split it across five accounts - but the total cannot exceed the limit.

If you are not sure how much room you have left, our ISA allowance calculator works it out, including the Lifetime ISA bonus.

The Lifetime ISA counts too

The Lifetime ISA has its own £4,000 yearly cap and earns a 25% government bonus, but anything you pay into it also uses up your overall £20,000 allowance. So a full £4,000 LISA contribution leaves £16,000 for your other ISAs. We cover how the LISA stacks up against other wrappers in ISA vs SIPP vs LISA.

Why hold more than one ISA?

• Different jobs for different money. A cash ISA for an emergency fund, a stocks and shares ISA for long-term growth.
• Better rates or lower fees. Since 2024 you can open a new same-type ISA mid-year to chase a better deal without closing the old one.
• Provider diversification. Some people prefer not to hold everything on a single platform.

When does the allowance reset?

Your ISA allowance resets at the start of each UK tax year, on 6 April. Any unused allowance does not roll over - if you do not use it by 5 April, it is gone. That makes the weeks before the deadline a good time to check your remaining room.

The bottom line

Have as many ISAs as suit you. Just remember the allowance is a single shared pot, the Lifetime ISA dips into it too, and it resets every 6 April. Keep within £20,000 across everything and you are following the rules.