Whether you’re saving for a home, retirement or another goal, ISAs offer a flexible, tax-efficient way to grow your money. Here’s a quick look at why they’re so useful.
Tax-free growth
Inside an ISA, interest, dividends and capital gains are free of UK income tax and capital gains tax — so your money compounds without tax dragging on it. As the separate allowances outside ISAs have shrunk, that shelter has become more valuable.
A range of options
- Cash ISA — lower-risk savings with tax-free interest.
- Stocks & Shares ISA — invest for potentially higher long-term returns, with investment risk.
- Innovative Finance ISA — peer-to-peer lending; higher risk.
- Lifetime ISA — a first home or later-life saving, with a government bonus.
Compare the costs
Fees matter, and ISA providers generally set them out clearly. Always compare platform and fund charges before choosing, since low costs help your returns over time. (For more detail, see our guide to ISA fee models.)
With tax-free growth, a choice of account types and transparent costs, ISAs are a strong foundation for building wealth. The £20,000 allowance for 2026/27 can be split across types to suit you. This is general information, not a recommendation of any particular product or provider.