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.

Why a Stocks and Shares ISA will make you richer 98% of the time

If you invest in stocks and shares for the long term, Harvey Jones says the odds of winning are firmly in your favour.

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

I’m not a gambling man. I don’t like taking big risks with money, I like the odds to be in my favour. Yet I invest all my long-term retirement funds in stocks and shares.

Why would I do that? Stock markets are simply not as risky as you think, provided you give them time.

Should you buy Rolls Royce shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

Positive return

New analysis backs me up by showing if you invest in the stock market for at least 10 years you will generate a positive return 98% of the time. Now those are the type of odds I am willing to take a punt on.

Investment platform Willis Owen found that over the long term, a stock market index such as the FTSE 100 is nearly always a long-term winner. It looked at the total return of the FTSE 100 over 10 years on a rolling monthly basis since January 1986 and found investors would have made a profit in 275 out of 281 periods. They would have lost out in just six. Again, I like those odds.

The average total 10-year return with dividends reinvested was an impressive 139.36%, turning £10,000 into £23,936. The largest return was 433% while the biggest loss was 14.5%. 

Rotten timing

The only time you would have lost money since 1986 would be if you bought during the tech boom and sold during the financial crisis.

Investors who got caught up in dot.com euphoria and bought in the six months running from January to June 1999, then lost their nerve in the wake of the financial crisis and sold in the same six months a decade later in 2009, would have lost out.

That’s the only way you could have lost money over a 10-year term in the last 33 years. I can’t imagine many people actually did that. Since most people invest in dribs and drabs and take their money out in dribs and drabs, I would argue that the chances of making a profit over 10 years is actually greater than 98%.

Think long term

Over shorter periods, the stock market becomes more of a gamble. For example, if you had bought the FTSE 100 on 1 January 2017 and sold on 31 December that year, your total return would have been 11.9% with dividends reinvested. If you had bought on the same dates in 2018, you would have made a loss of 8.7%.

You shouldn’t invest in shares for just one year. Five years is the absolute minimum. Willis Owen’s analysis shows that investors received a positive return 88% of the time if they invested over that term.

Making a million

Shorter investment terms are riskier as you have less time to recover from any correction. If you are saving for retirement, you should ideally be putting money away for 20, 30 or 40 years, which is when stock markets really work their magic.

If you give it long enough, you could even make a million from a Stocks and Shares ISA. If you are wondering how to get started, here are some of the stocks that ISA millionaires have put their money on. It’s been a winning investment for them. And less of a gamble than you think.

Harvey Jones 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

Man putting his card into an ATM machine while his son sits in a stroller beside him.
Investing Articles

Barclays shares are 11% below their 52-week high. Could they be a bit of a bargain to consider?

Overpriced or one of the FTSE 100’s hidden gems? James Beard takes a closer look at how the market is…

Read more »

Stack of one pound coins falling over
Investing Articles

Down 65% but yielding 6.7% – is this beaten-down UK stock now a generational bargain?

Harvey Jones says this UK stock is one of the worst FTSE 100 performers but there are sound reasons to…

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

Is this FTSE stock really 46% undervalued?

Analysts reckon this FTSE stock should be worth nearly 50% more. James Beard considers why there’s so much positivity surrounding…

Read more »

Front view of a young couple walking down terraced Street in Whitley Bay in the north-east of England they are heading into the town centre and deciding which shops to go to they are also holding hands and carrying bags over their shoulders.
Investing Articles

How much is needed in an ISA for passive income that covers the UK’s monthly average rent of £1,381?

The UK’s monthly average rent for May 2026 is £1,381. Muhammad Cheema looks at how much is needed to aim…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Investing Articles

How have BAE Systems shares become a dividend powerhouse? 5 reasons why!

Dividends on BAE Systems shares have risen every year without fail since the early 2000s. So what's the FTSE 100…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

Want to retire early? Here’s how a weak stock market could actually help

Christopher Ruane demonstrates with a real-world example how a tumbling stock market could potentially help someone who wants to retire…

Read more »

Tanker coming in to dock in calm waters and a clear sunset
Investing Articles

BP shares: still priced as an oil major — but the market may be behind the curve

Andrew Mackie looks at BP shares and why investors may be underestimating the quality and concentration of its underlying asset…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Investing Articles

At 8.1%, are investors missing the bigger story behind Legal & General shares?

Andrew Mackie explores Legal & General shares and asks whether investors are still viewing it too narrowly as a yield…

Read more »