Why I wouldn’t bother with a cash ISA after the FTSE 100’s recent stock market crash

The FTSE 100 (INDEXFTSE:UKX) could offer significantly better risk/return opportunities than a cash ISA.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

With interest rates expected to increase over the next few years, the pressure which savers have felt could begin to ease. Of course, there is no guarantee that this will take place, with Brexit offering a potential ‘curveball’ when it comes to future interest rate rises. But after a decade of pain, the interest income on cash is forecast to improve.

Of course, one way of boosting cash returns has been through opening a cash ISA. It is now possible to obtain 1.5% from a cash ISA, which is significantly higher than the 0.6% average return on a savings account. However, on a relative basis, even a 1.5% return is relatively low. The FTSE 100’s recent fall means that it offers three times that amount in dividends per year, and could therefore deliver significant outperformance of cash ISAs in the long run.

Risk/reward

Clearly, the FTSE 100 is riskier than a cash ISA. While the latter does not come with the potential for any capital loss (provided the amount invested is within the regulatory compensation scheme), the former could exhibit increasing volatility in future. After a decade-long bull market, the FTSE 100 has experienced a sharp decline since May, and this trend may continue in future. As such, there is a real risk of capital loss which may mean that the 4.5% dividend yield on offer is wiped out in a relatively short space of time.

Countering this risk, though, is the potential return which is on offer. The FTSE 100 has historically always recovered from its downturns, and has been able to generate a total return which is in the high-single-digits on an annualised basis. Therefore, for investors who are able to tie-up their cash for a number of years, it could offer a significantly better risk/reward opportunity than a cash ISA. Although there may be periods of paper losses in the medium term, in the long run it is likely that even a rising interest rate would not allow a cash ISA to deliver higher returns than the FTSE 100 in the long run.

Accessibility

One reason for the popularity of cash ISAs has been their accessibility. It is straightforward for anyone to open one, with it being very similar to opening a savings account. The process of paying money in and out is straightforward, and the returns are simply added to the account each year.

Investing in the FTSE 100, though, is no more challenging than opening a cash ISA. Products such as a Lifetime ISA or a stocks and shares one are straightforward to open, with purchasing shares being as easy as a couple of clicks online. And with dealing charges having fallen in recent years, it is possible for small investors to gain access to the FTSE 100. As a result, the appeal of the FTSE 100 versus a cash ISA seems to be increasing.

Peter Stephens has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Investing Articles

ChatGPT thinks these are the 5 best FTSE stocks to consider buying for 2026!

Can the AI bot come up trumps when asked to select the best FTSE stocks to buy as we enter…

Read more »

Investing For Beginners

How much do you need in an ISA to make the average UK salary in passive income?

Jon Smith runs through how an ISA can help to yield substantial income for a patient long-term investor, and includes…

Read more »

Investing Articles

3 FTSE 250 shares to consider for income, growth, and value in 2026!

As the dawn of a new year in the stock market approaches, our writer eyes a trio of FTSE 250…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Want to be a hit in the stock market? Here are 3 things super-successful investors do

Dreaming of strong performance when investing in the stock market? Christopher Ruane shares a trio of approaches used by some…

Read more »

Two white male workmen working on site at an oil rig
Investing Articles

The BP share price has been on a roller coaster, but where will it go next?

Analysts remain upbeat about 2026 prospects for the BP share price, even as an oil glut threatens and the price…

Read more »

Investing Articles

Prediction: move over Rolls-Royce, the BAE share price could climb another 45% in 2026

The BAE Systems share price has had a cracking run in 2025, but might the optimism be starting to slip…

Read more »

Tesla car at super charger station
Investing Articles

Will 2026 be make-or-break for the Tesla share price?

So what about the Tesla share price: does it indicate a long-term must-buy tech marvel, or a money pit for…

Read more »

Portrait of elderly man wearing white denim shirt and glasses looking up with hand on chin. Thoughtful senior entrepreneur, studio shot against grey background.
Investing Articles

Apple CEO Tim Cook just put $3m into this S&P 500 stock! Time to buy?

One household-name S&P 500 stock has crashed 65% inside five years. Yet Apple's billionaire CEO sees value and has been…

Read more »