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How much can I contribute to an ISA each tax year? / what is the ISA allowance?
The ISA allowance is the maximum amount you are allowed to contribute across all your ISAs during a single tax year. The UK tax year runs from 6 April to 5 April of the following year.
For the 2025/26 tax year, the ISA allowance is £20,000 per person. You can divide this allowance across different types of ISAs, as long as you subscribe to only one of each type within the same tax year.
Any unused allowance does not carry over to the next tax year.
Important Information:
If you already subscribed to a Stocks and Shares ISA with another provider during the current tax year, you cannot also subscribe to a MEXEM UK Stocks and Shares ISA in that same year.
To view how much you have contributed to your MEXEM UK Stocks and Shares ISA and the remaining allowance available you can check this in your Client portal Transfer & Pay > Deposit page . Note, this assumes you havent subscribed to any ISAs elsewhere.
For more information, visit the HMRC ISA allowance guidance
