Last updated: 30 March 2026

The ISA allowance deadline falls on 5 April every year, and once it passes, any unused portion of your £20,000 tax-free allowance is gone for good. Whether you are looking at a Stocks and Shares ISA, a Cash ISA, or a personal pension, the clock is ticking on the 2025/26 tax year.

This year, there are extra reasons to pay attention. Dividend tax rates are rising from 6 April 2026, and the Cash ISA allowance is being cut from 2027. Here is how to make the most of your allowance before the reset.

Disclaimer: This is not financial advice. Investing involves risk and you can lose money. Always do your own research or speak to a qualified financial adviser before making decisions about your money.

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