How to choose between a Cash ISA and a Stocks & Shares ISA for the 2026/27 tax year, and why the right answer depends on your timeframe.
Cash ISA
Your money sits in cash, earning interest, entirely tax-free, with no risk of the balance falling — the natural choice for money you might need within the next few years, or simply don’t want at risk.
Stocks & Shares ISA
Your money is invested in the markets — genuine potential for higher long-term growth than cash, but with real short-term volatility, meaning the balance can fall as well as rise, particularly over shorter periods.
The honest rule of thumb
Money you’ll need within roughly 5 years generally belongs in cash. Money you can genuinely leave untouched for longer has more scope to ride out stock market volatility and benefit from long-term growth.
Compare your annual ISA allowance usage with the Payslp Budget Planner.
A middle-ground option worth knowing about
You’re not limited to choosing one exclusively — many people split their annual ISA allowance between both, keeping a cash buffer for shorter-term needs while investing the rest for longer-term growth.
Frequently asked questions
Can I hold both types of ISA at the same time?
Yes, and many people do — your total annual allowance can be split across different ISA types in whatever combination suits your circumstances.