Are Cash ISAs still worth it?

If you’ve been saving money into a Cash ISA, you’re not alone. In fact, 40% of UK adults use one as their go-to savings account. It’s simple, it’s tax-free, and until now, it’s felt like a reliable way to tuck money away for the future.

But with over £300 billion sitting in low-interest Cash ISAs  and inflation eating into real-world value, it’s time to ask: are Cash ISAs still worth it in 2025?

Certainly Chancellor Rachel Reeves seems to think it’s time for a change in how we view savings: for months, rumours have been circulating about proposed ISA reforms designed to shake up how we save and invest in the UK.

As financial planners in Cirencester working with professionals, retirees and business owners across the Cotswolds, we’ve seen how Cash ISAs have become the ‘safe’ option for many. Safety matters, but so does growth.

Below, we’ll look at when Cash ISAs work well, where they can fall short over time, and what other options could help longer‑term money keep pace.

What are the changes to the Cash ISA?

When the Treasury first mooted the idea that it was looking at options to reform Cash ISAs, it was to “encourage investing, not raise revenue”. Reeves believes consumers should be encouraged to take more informed risks and that reforming Cash ISAs – and lowering the tax-free amount that could be saved – was the solution.

However, the government has taken a different approach to persuading people to switch their savings from Cash Isas to Stocks and Shares. Instead of the proposed reforms to Cash ISAs, the government is launching an advertising campaign to promote the opportunities provided by investing in equities.

The new campaign has the backing of financial institutions and banks will directly promote investment opportunities to people with cash sitting at low-interest rates. To help people make more informed decisions, the Treasury has said there will be a review of “risk warnings on investment products” .

Why do our attitudes to saving matter?

The government’s message is clear: it’s time to think more carefully about how we manage our savings.

Keeping large sums in cash has been the easy default for many of us. The trade‑off is that meaningful long‑term growth typically involves investing—and with it, some risk.

The government’s view extends beyond individual savers: ministers hope that directing more cash savings into investments will channel more capital to UK companies, thereby helping to support the wider economy.

For more smart ways to invest, take a look at our blog on 3 Common Investing Mistakes.

What does this mean for Cash ISA savers?

For now, Cash ISAs aren’t going anywhere. But Rachel Reeves has certainly started the conversation. As a result, interest in Stocks & Shares ISAs will inevitably grow, and we may see a shift in where people choose to keep their money.

Currently, only 21% of adults have Stocks & Shares ISAs with 40% of adults choosing to save in a Cash ISA . However, if attitudes to risk start to shift, this figure may change, with investing becoming more mainstream.

For context, around 60% of adults in the United States already own shares, either in their own name or via workplace pension funds. It shows just how much room there is for investing to move into the British mainstream once attitudes to risk soften. (Gallup April 2025; Federal Reserve Survey of Consumer Finances 2022 family‑level estimate.) 

Certainly, it’s something the Treasury will keep looking at as it “continues to consider reforms to Isas and savings to achieve the right balance between cash savings and investments”.
So, if you’re someone who’s always preferred a Cash ISA for its simplicity and safety, you might be wondering if you’re missing out. And honestly? You might be.

So, are Cash ISAs still worth it?

Cash ISAs will always have a place – for the right purpose. However, if you’re sitting on a large Cash ISA, it might be time to ask: what’s this money for? If it’s for something five, ten or twenty years away, you could be missing an opportunity to grow it more effectively.

Cash ISAs are useful for:

• Emergency funds
• Short-term saving goals (like a house deposit)

But there are some downsides worth thinking about:

• Interest rates are often lower than inflation
• Your money isn’t compounding in the way investments can
• Over time, you may lose out on real buying power

Can you transfer a Cash ISA to a Stocks & Shares ISA?

Yes, absolutely. And for many people, that’s a great first step toward building a more balanced savings and investment strategy.

Persuading people to switch their savings from Cash Isas to Stocks and Shares is a key message in the Chancellor’s new campaign. By doing this, Reeves hopes, the availability of capital to growing companies will increase and returns for savers will be boosted.

At Abode Financial Planning in Cirencester, we constantly help clients explore options like these.

If you’re holding cash for the long term, the question you need to ask isn’t “is it safe?”- it’s “is it working?” Often, a higher risk, longer term financial strategy is the best route to creating financial security that reflects your goals and your time-frame.

Invest smarter with financial planning

Confidence comes from knowledge. And at Abode Financial Planning, we take time to walk clients through the options, explain the risks, and show how different ISA choices can support different goals.

Whether you want to explore transferring a Cash ISA, dip a toe into investing, or build a broader plan, we’re here to help. Speak to us today to review your current ISA strategy and we’ll make sure your money is working as hard as it should.