We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

3 reasons I’d ditch a Cash ISA and buy FTSE 100 shares right now

I think a Cash ISA lacks appeal compared to buying a diverse range of FTSE 100 (INDEXFTSE:UKX) stocks.

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.

Cash ISAs continue to be significantly more popular than Stocks and Shares ISAs, with a larger number of the former being opened each year compared to the latter.

However, the returns available on a Cash ISA are much lower than for the FTSE 100. Furthermore, the tax benefits of having a Cash ISA have been diluted in recent years so that a savings account may be a better option for most people.

XXX

While risks are greater when investing in FTSE 100 shares versus a Cash ISA, in the long run the stock market has always recovered from its downturns to post higher highs. As such, now could be the right time to pivot from a Cash ISA to FTSE 100 shares.

Tax changes

Tax changes mean that the first £1,000 of interest income per year is now tax-free for many savers. This means that the previous tax advantages of having a Cash ISA versus a bog-standard savings account have disappeared.

Since interest rates are relatively low, the best savings rates are around 1.5% at present. This means an individual would need to have around £67,000 in savings in order to generate over £1,000 in interest a year.

Therefore, unless you have such a high amount of cash, there’s no benefit to having a Cash ISA versus a savings account. In other words, tax will not be payable on the interest received from either type of account – unless you have over £67,000 in a cash savings account.

Moreover, the tax benefits of investing in FTSE 100 shares could be significantly greater. The lead index, for example, yields over 4% at the present time. Since no tax is payable on capital held within a Stocks and Shares ISA, you can net a significantly higher sum of money from using your annual ISA allowance to purchase FTSE 100 shares.

Returns

The return prospects for the FTSE 100 continue to be relatively high. Since around two-thirds of the index is focused on international economies, it may benefit from the continued rapid growth rate of emerging economies.

The track record of the index shows it’s possible to generate high-single digit annualised total returns over the long run. In fact, since its inception in 1984, the FTSE 100 has recorded a total return of around 9% per year. Even though interest rates could rise and lead to improving returns on Cash ISAs in the coming years, they’re unlikely to deliver the same level of returns as the FTSE 100.

Risks

While investing in FTSE 100 shares is riskier than having a Cash ISA, the latter’s negative real-term returns mean the spending power of cash could fall over the long run. Therefore, there may not be a risk of capital loss with a Cash ISA, but over time it could lead to disappointment for savers who are aiming to build a retirement nest egg, or simply improve their financial standing.

The FTSE 100’s risks can be reduced through diversifying among a number of companies. This could also provide higher growth rates through accessing businesses that operate in a variety of regions and industries, thereby providing a more attractive risk/reward ratio versus a Cash ISA.

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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »