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.

I’d buy cheap FTSE 100 shares with £185 a month to aim for a million

A £1m Stocks and Shares ISA pot! Our writer considers how to use FTSE 100 shares to reach this milestone.

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop

Image source: Getty Images

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 using cheap FTSE 100 shares to target a £1m Stocks and Shares ISA. It might sound a tad ambitious, but I reckon it’s possible to achieve this goal, albeit with some caveats.

As a long-term investor, I have time on my side. And that’s a fundamental part of the equation to reach a million. If I wanted to get there within a few years, I’d have to take much greater risks than if I allow myself more 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.

For instance, let’s say I’m investing £185 a month. That’s £2,220 a year. If I wanted to build a pot worth £1m within a decade, I’d need to find shares that can grow by 80% a year. That sounds very unrealistic to me.

However, if I have 35 years to invest instead, it becomes a completely different proposition. I calculate that I’d need an annual stock market return of 12% to reach £1m.

Using FTSE 100 shares to reach £1m

Including dividends, the FTSE 100 has managed to achieve around 8% a year over several decades. But that would fall short of my target. That’s why I’d pick a few of the best shares that I can find.

Bear in mind that I wouldn’t need to find the very best performing stock every year. In fact, over the past decade, more than a third of FTSE 100 shares achieved an annual return of at least 12%.

So how can I find these stock market winners?

Finding the best shares

First, I’d look at the smaller companies. They might be able to grow much faster than larger and more mature giants. From the FTSE 100, I’d target those that have a market capitalisation of less than £5bn.

Next, I only want to invest in high-quality companies. But what does this mean? Popular investor Terry Smith describes them as businesses that have a high return on capital employed. It’s a measure of profitability and Smith regards it as the single most important indicator for a long-term investment.

I’d also like to see what Warren Buffett regards as a moat. That’s generally a competitive advantage like a strong brand or patents. These can prevent competitors from taking market share.

The strongest companies that I invest in should have double-digit profit margins, and strong balance sheets too.

Which stocks?

With so many criteria, are there any FTSE 100 shares that tick my boxes?

Sure, there are. UK housebuilder Barratt Developments, kitchen manufacturer Howden Joinery, and investment platform Hargreaves Lansdown all currently meet my criteria.

In addition, if I buy these three shares I’d receive around 5% a year in dividends too.

Bear in mind that much can change over such a long timeframe. So I’d need to keep an eye on my investments. New competitors might find a way to disrupt business models. The market environment could also make it harder for companies to operate.

I’d try to mitigate these points before I pick my shares, but there are no guarantees and things can change over time.

That said, all three companies have ample experience to be able to weather any storms and I’d certainly consider them for my ISA.

Harshil Patel has no position in any of the shares mentioned. The Motley Fool UK has recommended Hargreaves Lansdown and Howden Joinery Group. 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

Young brown woman delighted with what she sees on her screen
Investing Articles

Up 27.1% in 6 months: a FTSE 100 share paying out 2.8% a year!

This undervalued FTSE 100 share has suddenly soared in 2026. The stock still offers a decent cash yield, plus the…

Read more »

Investing Articles

Could now be the time to buy great UK shares at bargain prices?

Some UK shares have been trading exuberantly, with the FTSE 100 hitting hew highs in 2026. Does that mean there…

Read more »

piggy bank, searching with binoculars
Investing Articles

Prediction: this stock could surge 51% in my SIPP and ISA by 2027

Ben McPoland explains why he's bullish on this growth stock in his ISA and SIPP portfolios, despite it falling 25%…

Read more »

Satellite on planet background
Investing Articles

Is SpaceX on my list of shares to buy in July?

SpaceX shares have been falling. But the wait for a return from the business might be longer than the wait…

Read more »

ISA coins
Investing Articles

£10,000 put in a Cash ISA at the start of 2026 is now worth…

We're only halfway through the year, but has a Cash ISA beaten stock market returns so far? Our writer digs…

Read more »

Young woman carrying bottle of Energise Sport to the gym
Investing Articles

Still stubbornly in pennies, will the JD Sports share price hit £1 again?

Christopher Ruane reckons the JD Sports share price looks cheap but it's already been in pennies for many months. What's…

Read more »

Middle aged businesswoman using laptop while working from home
Investing Articles

Can an ISA outperform the stock market? Yes – here’s how!

Many investors dream of using their ISA to do better than the market overall. This writer knows it's possible --…

Read more »

Asian man looking concerned while studying paperwork at his desk in an office
Investing Articles

Dear SpaceX stock fans, mark your calendar for 7 July

SpaceX stock is getting fast-tracked into the world's leading technology index. Should I buy shares of the rocket maker before…

Read more »