How I’d invest in a Stocks and Shares ISA to try and double my money

Our writer thinks reinvesting dividends could unlock powerful growth in his Stocks and Shares ISA. This is why.

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.

I see a Stocks and Shares ISA as a long-term investment vehicle. That is why I sometimes think about my ISA with a very expansive mindset.

For example, I think it is possible to aim and double the money in my ISA, if I am willing to be patient. Here is how I would go about it.

Dividends and compounding

My approach would be to invest in shares with big dividend payouts. Dividends are never guaranteed and shares that have high yields often have notable risks. That can be why the yields are unusually high. So I would be sure to diversify my portfolio across a number of different dividend shares in various industries.

Then, instead of withdrawing the dividends when they are paid, I would reinvest them in the same shares. This is what is known as compounding.

For a year or two, the growth in my ISA may not seem remarkable. But the more years I reinvest dividends, the bigger my ISA should get – generating even larger dividends in future. This is a kind of snowball effect — as the snowball goes downhill, it picks up more snow that, in turn, also starts to do the same. I can hopefully see my funds grow as they benefit from compounding.

Aiming to double my money

But although they grow, why would my funds double? It may be easiest to illustrate with an example. If I invest my Stocks and Shares ISA in shares with an average yield of 8%, after nine years I should have £1,999. The following year, my ISA should be worth £2,159. That is more than double what I invested in it, just due to compounding dividends.

This example assumes share prices and dividends will remain the same. That might not happen in practice. Higher share prices or dividend cuts could mean it takes me longer to see my funds double. Then again, if share prices fall or dividends increase, I might actually double my money faster.

Dividend shares for a Stocks and Shares ISA

So much for the theory – what about the practice? After all, are 8%-yielding dividend shares easy to find? Actually, quite a few shares offer an 8% dividend yield at the moment without even needing to look outside the FTSE 100. These include tobacco maker Imperial Brands, housebuilder Persimmon, miner Rio Tinto, fund manager M&G and insurer Phoenix.

If I split my Stocks and Shares ISA evenly between those five names, my prospective yield overall would be over 8%. That could change over time – falling metal prices could hurt Rio Tinto or a housing market downturn might lead Persimmon to cut its dividend, for example.

No dividend is ever guaranteed. But actually even those 8%+ dividends could grow. Persimmon was the only one of those five shares not to grow its dividend last year.

Christopher Ruane owns shares in Imperial Brands and M&G. The Motley Fool UK has recommended Imperial Brands. 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

ISA coins
Investing Articles

1 mighty FTSE dividend stock I’m considering for my ISA

A new ISA allowance has Paul Summers searching for strong and stable dividend stocks to add to his portfolio.

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Are Rolls-Royce shares’ best days behind them?

Rolls-Royce shares have had a stellar few years. So far in 2026, though, they slightly lag the FTSE 100 blue-chip…

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

Buying £20k of Lloyds shares could give me an £851 income this year!

Lloyds has been one of the FTSE 100's hottest dividend growth shares in recent years. But do current risks make…

Read more »

Picturesque Cotswold village of Castle Combe, England
Investing Articles

ISA or SIPP? Some key differences to know

Ever wondered what some of the differences are between investing for retirement in a SIPP and in an ISA? Here…

Read more »

Young woman working at modern office. Technical price graph and indicator, red and green candlestick chart and stock trading computer screen background.
Investing Articles

2 world-class S&P 500 stocks down 11% and 32% to consider buying

Searching for stocks to buy for an ISA in April? Our writher thinks these excellent growth shares are worth a…

Read more »

View over Old Man Of Storr, Isle Of Skye, Scotland
Investing Articles

How much do you need in a Stocks and Shares ISA to aim for an annual income of £39,477?

Harvey Jones shows how ordinary investors can use their Stocks and Shares ISA allowance to build a generous passive income…

Read more »

British flag, Big Ben, Houses of Parliament and British flag composition
Investing Articles

Wise: a hidden gem in the UK stock market

You won’t find Wise on the list of most popular shares in the British stock market. But Edward Sheldon believes…

Read more »

Rear view image depicting a senior man in his 70s sitting on a bench leading down to the iconic Seven Sisters cliffs on the coastline of East Sussex, UK. The man is wearing casual clothing - blue denim jeans, a red checked shirt, navy blue gilet. The man is having a rest from hiking and his hiking pole is leaning up against the bench.
Investing Articles

Is a £100,000 SIPP big enough to retire on?

Harvey Jones looks at how much money investors need in a SIPP to fund a decent standard of living after…

Read more »