How I’d invest £10k in a Stocks and Shares ISA to aim for a million

Getting a Stocks and Shares ISA to £1m sounds daunting. Our writer considers what it would take and which shares he’d consider to reach the goal.

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.

Warren Buffett at a Berkshire Hathaway AGM

Image source: The Motley Fool

I’m looking at the best ways to invest £10,000 in my Stocks and Shares ISA. With thousands of shares to choose from, where do I start?

Before looking at which shares to buy, I’d consider what it would take to grow £10,000 to £1m. It sounds quite far-fetched. And it is if I’m trying to reach this goal within just a few years.

But as a long-term investor, it’s a target that becomes much more realistic.

Building a £1m Stocks and Shares ISA

Let me explain. If I want to hit my goal in 10 years, I calculate that I’d need to earn a return of 58% per year. Without taking significant risks, that doesn’t sound likely to me.

But if I allow myself a much longer timeframe, like 35 years, I’d need to earn a more down-to-earth 14% a year.

Bear in mind that the long-term FTSE 100 return has been around 8% a year. So I’d need to try to beat that. And I’d aim to do so by picking some of the best shares I can find.

So how would I invest £10,000 to aim for a million? I’d split my investment equally across a basket of diversified shares. By that I mean that I’d pick several shares from a few different sectors.

Winning characteristics

There are some characteristics that I’d look for to hopefully find the winners of the future. Many of the features I’d go for are popular with legendary investors like Warren Buffett and Terry Smith.

For instance, I like high-quality companies as measured by return on capital employed (ROCE). In particular, I prefer to invest in companies that have a double-digit ROCE.

I also like to see profitable companies with plenty of cash flow, earnings growth and a solid balance sheet.

Buffett uses the word ‘moat’ to mean a sustainable competitive advantage. It’s something that the best companies have, in my opinion. It can come in many forms like a strong brand, a unique product, or a patent that leaves competitors standing.

I’d also aim to pick some large and some smaller companies. The larger firms could be less volatile, but the smaller ones might grow faster.

Top picks

Right now, there are many shares that tick my boxes. Here are seven that I’d happily buy today for my ISA: Astrazeneca, Howden Joinery, RELX, Diageo, Ashtead, Games Workshop and Rightmove.

On average they have a ROCE of 49%, and an operating profit margin of 34%. My basket also provides a 2.5% dividend. They each display many of the qualities noted above.

Bear in mind that much can change over a long timeframe. I’d need to continue to follow these companies over the years to ensure it still makes sense to own them. Despite current strength, new technology or competitors could dent my stocks in the future.

That said, I’m comfortable that these seven shares could help me reach my £1m target.

Harshil Patel has no position in any of the shares mentioned. The Motley Fool UK has recommended Diageo, Games Workshop, Howden Joinery Group, RELX, and Rightmove. 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

Front view of aircraft in flight.
Investing Articles

Is it game over for the BP share price rally?

The BP share price has looked like a one-way bet in recent weeks as oil and gas prices soar but…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

Amid geopolitical and AI risks, here’s how I’m positioning my ISA and SIPP in 2026

Edward Sheldon explains how he's allocating capital within his investment accounts and SIPP amid the various risks to the market.

Read more »

Young mixed-race woman looking out of the window with a look of consternation on her face
Investing Articles

My game plan for the next stock market crash

Markets have been surprisingly resilient during the recent Middle East conflict but we still cannot rule out a stock market…

Read more »

Concept of two young professional men looking at a screen in a technological data centre
Investing Articles

1 top growth stock to consider buying after it crashed 59%

This S&P 500 growth stock has fallen off a cliff lately due to AI software fears. Our writer thinks this…

Read more »

A mature woman help a senior woman out of a car as she takes her to the shops.
Investing Articles

Here’s how a 35-year-old putting £15 a day into an ISA could end up earning £18k+ of passive income annually!

A 35-year-old with no ISA but a willingness to invest relatively small sums could one day be earning many thousands…

Read more »

Young black colleagues high-fiving each other at work
Investing Articles

With the potential to double in 10 years, this could be a dividend stock to consider buying

With a yield of 7.2%, income investors might consider buying this stock. But reinvesting the dividends could deliver even more…

Read more »

Happy couple showing relief at news
Investing Articles

How much would someone need to invest in the stock market to target a £1,250 monthly second income?

Investing in the stock market can help deliver long-term wealth. But James Beard says it can also be a way…

Read more »

happy senior couple using a laptop in their living room to look at their financial budgets
Investing Articles

How much would someone need in an ISA to aim to treble the current State Pension?

Experts say the State Pension isn’t generous enough to provide a comfortable retirement. James Beard says the stock market could…

Read more »