How I’d invest £350 a month in a Stocks and Shares ISA to aim for a million

Targeting a £1m Stocks and Shares ISA, our writer looks at what it would take to reach this goal if he invested regularly.

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 young Asian woman holding up her index finger

Image source: Getty Images

Recession risks are rising, borrowing costs are soaring and investors are nervous amid market turmoil. So why should I invest in a Stocks and Shares ISA right now?

Times of crisis can often create opportunities. Share prices can fall in the short term due to temporary factors. But as a long-term investor, I can somewhat ignore near-term price swings.

Timing the market and trying to buy at the bottom is notoriously difficult. One of the golden rules of long-term investing is said to be, “time in the market beats timing the market”.

It suggests that investing consistently for many years should give a better return than selling in times of crisis with the hoping of buying back later.

If I had the spare cash and wanted to start investing in a Stocks and Shares ISA today, here’s what I’d do.

Aiming for a £1m Stocks and Shares ISA

First, I’d invest consistently and regularly. That way, even if share prices fall in the near term, I can rest assured that my automated plan is picking up cheap shares.

History shows that over long periods, average stock market returns have been around 8%-10% a year. Although future returns aren’t guaranteed, I’d use this figure as an estimate.

I’d like to aim for a £1m Stocks and Shares ISA. But to do so, I’d need to invest for many years. I calculate that if I invest £350 every month for 35 years, I could have a pot worth around £1.1m.

What to invest in?

I could invest in a FTSE 100 or S&P500 index fund. They would track the largest UK and US stocks.

Alternatively, I could pick and choose my own shares. Many have achieved a far greater than average return over the years.

With some reading and research, I’d look for shares that could perform well over the coming years and decades.

More specifically, I’d look for high-quality businesses that offer strong profit margins and a solid competitive advantage. This could be in the form of patents, customer relationships or a brand.

I’d look for a double-digit return on capital employed. That’s a key measure of a quality business, in my opinion. It demonstrates how efficiently a company uses its capital.

Next, I’d like to own a mixture of stocks that span growth, value, and income. Over time, one category might perform better than another. For instance, this year, value stocks have performed far better than growth stocks. But that won’t always be the case.

Top picks

Right now, the FTSE 100 includes several of the shares that I’d buy if I had £350 a month to add to my ISA. These include analytics business RELX, equipment rental company Ashtead, and defence leader BAE Systems.

On average, these three shares offer a return on capital employed of 16%, and a tasty 20% profit margin. Their performances over the past decade have been remarkable. If I’d bought all three shares exactly 10 years ago, I’d have achieved a return of 19% a year.

Although the result could be very different over the coming decades, if I can consistently find such gems, I could potentially achieve my £1m goal much earlier than planned.

Harshil Patel has no position in any of the shares mentioned. The Motley Fool UK has recommended RELX. 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

Suddenly investors can’t get enough of GSK shares! What’s going on?

After years in the doldrums, GSK shares are suddenly the most bought stock on the entire FTSE 100. Harvey Jones…

Read more »

'2024' art concept overlaid on a stock screener
Investing Articles

£5,000 invested in Greggs shares in October 2024 is now worth…

Despite facing a multitude of challenges today, might Greggs' stock be worth a look after losing well over a third…

Read more »

Investor looking at stock graph on a tablet with their finger hovering over the Buy button
Investing Articles

Where will Rolls-Royce shares go next? Let’s ask the experts

Rolls-Royce shares have wobbled as aviation uncertainty grows. But can the City's glowing forecasts help get the price climbing again?

Read more »

Two female adult friends walking through the city streets at Christmas. They are talking and smiling as they do some Christmas shopping.
Investing Articles

No savings at 45? Here’s how investors could still build a £17,360 second income

It’s never too late to start investing, and with compounding working over time, Andrew Mackie shows how investors could still…

Read more »

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

How to invest £10,000 to aim for a £6,108 annual passive income

UK REITs have been getting a lot of attention. But our author thinks they're still the place to look for…

Read more »

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.
Investing Articles

What sort of passive income stream could you build for a fiver a day?

Think a few pounds a day might not go far? In fact, that could be the basis of some pleasing…

Read more »

British Isles on nautical map
Investing Articles

I sense a potential opportunity if the FTSE 100 loses this quality growth stock…

Rightmove falling out of the FTSE 100 might have been unthinkable a year ago. But that's the reality investors are…

Read more »

The flag of the United States of America flying in front of the Capitol building
Investing Articles

The largest S&P 500 holding in my ISA is…

Edward Sheldon's making a large bet on this S&P 500 stock. Because he sees the long-term risk/reward proposition very attractive.

Read more »