Forget a cash ISA! A SIPP could help you retire wealthy

Here’s why a SIPP could be a better option 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.

A self-invested personal pension (SIPP) may sound like a relatively complicated financial product. However, the reality is that it is now easier than ever to set one up and manage it online, with the cost of doing so being relatively low.

Certainly, a number of individuals may feel as though investing in the FTSE 100 and other shares through a SIPP may be a riskier move than having savings in a cash ISA. While there is a risk of loss with shares, the reality is that over the long run they are much more likely to provide a nest egg large enough to provide a financially-secure retirement.

Return potential

While there are a range of assets which can be held within a SIPP, including commercial property, shares could offer the simplest and most effective means of building-up retirement savings.

Contributions made into a SIPP benefit from favourable tax treatment. This means that for every 80p invested in a SIPP from after-tax earnings, the government will ‘top-up’ the amount with 20p. Over time, this can lead to a much larger nest egg. And with 25% of a SIPP being tax-free upon withdrawal from age 55, even if returns are minimal the product could be worth utilising for the tax benefits alone.

In contrast, the contributions made to a cash ISA are subject to income tax. This means that the amount invested is unlikely to grow as quickly as the contributions made into a SIPP.

Interest rates

When interest rates were relatively high and the interest received in savings accounts was subject to income tax, a cash ISA had some appeal. Generally, the rates offered were an improvement on the after-tax interest rate on savings accounts. Since interest rates were above 5% until the financial crisis, the overall return was relatively strong.

Now, though, low interest rates have meant that receiving much more than 1% from a cash ISA is challenging. This is well behind the current rate of inflation of 2.7%, and means that the real-terms value of contributions into a cash ISA are set to decline year-on-year. Similarly, with the first £1,000 of interest received each year now being tax free, the reality is that a bog-standard savings account may offer a higher return than a cash ISA.

In contrast, shares bought through a SIPP could offer much stronger return potential in the long run. For example, the FTSE 250 has recorded a total return of over 9% per annum in the last 20 years. Although there is no guarantee that this will be repeated in future, in the long run the returns from a diverse range of shares are very likely to beat the return on a cash ISA – even if interest rates rise over the medium term.

Outlook

While saving money for emergencies is always a good idea, having too much wealth in cash can lead to the erosion of spending power. As such, for individuals seeking to build a nest egg for retirement over the long run, a SIPP could be worth considering.

More on Investing Articles

Investing Articles

Where will Rolls-Royce shares go in 2026? Here’s what the experts say!

Rolls-Royce shares delivered a tremendous return for investors in 2025. Analysts expect next year to be positive, but slower.

Read more »

Emma Raducanu for Vodafone billboard animation at Piccadilly Circus, London
Investing Articles

Up 40% this year, can the Vodafone share price keep going?

Vodafone shareholders have been rewarded this year with a dividend increase on top of share price growth. Our writer weighs…

Read more »

Buffett at the BRK AGM
Investing Articles

Here’s why I like Tesco shares, but won’t be buying any!

Drawing inspiration from famed investor Warren Buffett's approach, our writer explains why Tesco shares aren't on his shopping list.

Read more »

Investing For Beginners

If the HSBC share price can clear these hurdles, it could fly in 2026

After a fantastic year, Jon Smith points out some of the potential road bumps for the HSBC share price, including…

Read more »

Investing Articles

I’m thrilled I bought Rolls-Royce shares in 2023. Will I buy more in 2026?

Rolls-Royce has become a superior company, with rising profits, buybacks, and shares now paying a dividend. So is the FTSE…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

With Warren Buffett about to step down, what can investors learn?

Legendary investor Warren Buffett is about to hand over the reins of Berkshire Hathaway after decades in charge. How might…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

I asked ChatGPT for the perfect passive income ISA and it said…

Which 10 passive income stocks did the world's most popular artificial intelligence chatbot pick for a Stocks and Shares ISA?

Read more »

Tŵr Mawr lighthouse (meaning "great tower" in Welsh), on Ynys Llanddwyn on Anglesey, Wales, marks the western entrance to the Menai Strait.
Investing Articles

How I generated a 66.6% return in my SIPP in 2025 (and my strategy for 2026!)

By focusing on undervalued, high-potential stocks, this writer achieved market-beating SIPP returns in 2025 – here’s how he aims to…

Read more »