How I’d invest £300 a month in a Stocks & Shares ISA to aim for a million

Who wants to be a Stocks and Shares ISA millionaire? I do! Here’s how I’d plan to reach this goal starting with a modest sum.

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.

Young Black man sat in front of laptop while wearing headphones

Image source: Getty Images

When investing, your capital is at risk. The value of your investments can go down as well as up and you may get back less than you put in.

Read More

The content of this article is provided for information purposes only and is not intended to be, nor does it constitute, any form of personal advice. Investments in a currency other than sterling are exposed to currency exchange risk. Currency exchange rates are constantly changing, which may affect the value of the investment in sterling terms. You could lose money in sterling even if the stock price rises in the currency of origin. Stocks listed on overseas exchanges may be subject to additional dealing and exchange rate charges, and may have other tax implications, and may not provide the same, or any, regulatory protection as in the UK.

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 use a Stocks and Shares ISA as my preferred way to invest for the future. Although it’s usually possible to buy many financial instruments within this tax wrapper, I tend to focus on owning its namesakes, stocks and shares.

With thousands of shares available, which ones work best for my goal? That’s what I’d like to answer today.

Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, neither does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.

Should you invest £1,000 in Scottish Mortgage right now?

When investing expert Mark Rogers has a stock tip, it can pay to listen. After all, the flagship Motley Fool Share Advisor newsletter he has run for nearly a decade has provided thousands of paying members with top stock recommendations from the UK and US markets. And right now, Mark thinks there are 6 standout stocks that investors should consider buying. Want to see if Scottish Mortgage made the list?

See the 6 stocks

Stocks and Shares ISA millionaire?

A £1m Stocks and Shares ISA might seem like an unreachable goal. And if I wanted to get there by next year, it certainly would be.

But the key to successful investing is to focus on the long term, in my opinion. Having a sufficiently long time horizon would allow my shares to grow.

The average stock market return is around 8%-10% per year. That’s across many decades of history. Bear in mind that past returns can’t guarantee what it will be in the future, but I use it as an estimate.

When I crunch the numbers, I calculate that if I invest £300 a month, I should reach my £1m goal within 35 years. It might sound like a very long time, but there are several strategies I could use to shorten it.

Speeding up the process

First, I could increase my monthly investment. Doubling it to £600 a month could enable me to reach my goal seven years earlier.

Alternatively, I could try to earn more than the average stock market return. Looking at the FTSE 350 index, I note that 14 shares achieved at least a 20% annual return over the past decade.

If I can match that, I’d expect to reach £1m within 22 years. That’s 13 years earlier than the original estimate.

Finding the best shares

When looking at the top performing shares over the past decade, there are several features that many have in common.

First, I note that many exhibit a high return on capital employed. This measure looks at how efficiently a company uses its money, or capital. I’d look for figures over 15% to find high-quality companies.

Next, the best performing shares aren’t typically the largest companies. A decade ago, many would have been small or medium-sized businesses.

That makes sense, as smaller companies can often grow faster. A popular investor, Jim Slater once coined the phrase, “elephants don’t gallop” to highlight this phenomenon.

However, smaller companies can be more volatile and could have wider swings in share price. But as I have a long time horizon, I should be able to withstand this volatility.

Top stocks

So which shares meet these criteria? With this year’s stock market weakness depressing share prices, there are currently several potential candidates.

For a new long-term Stocks and Shares ISA right now, I’d buy Softcat, Plus500, Games Workshop, Big Yellow Group, and IG Group.

On average, these five shares offer a return on capital employed of 50%. They also all produce a double-digit profit margin. That all sounds mighty appealing to me.

Investing in AI: 3 Stocks with Huge Potential!

🤖 Are you fascinated by the potential of AI? 🤖

Imagine investing in cutting-edge technology just once, then watching as it evolves and grows, transforming industries and potentially even yielding substantial returns.

If the idea of being part of the AI revolution excites you, along with the prospect of significant potential gains on your initial investment…

Then you won't want to miss this special report inside Motley Fool Share Advisor – 'AI Front Runners: 3 Surprising Stocks Riding The AI Wave’!

And today, we're giving you exclusive access to ONE of these top AI stock picks, absolutely free!

Get your free AI stock pick

Should you invest, the value of your investment may rise or fall and your capital is at risk. Before investing, your individual circumstances should be assessed. Consider taking independent financial advice.

Harshil Patel has no position in any of the shares mentioned. The Motley Fool UK has recommended Games Workshop and Softcat. 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

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

4 stocks Fools have bought for growth and dividends

Sometimes, an investor doesn’t have to make the choice between buying a growth stock or dividend shares! Some investments offer…

Read more »

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

Is there no limit to how high Rolls-Royce shares might go?

Christopher Ruane sees some reasons Rolls-Royce shares could continue pushing upwards. But is he persuaded enough about the potential value…

Read more »

Businessman hand flipping wooden block cube from 2024 to 2025 on coins
Investing Articles

How much could £20k in a Stocks and Shares ISA be worth in 2030?

UK investors have enjoyed spectacular returns in their Stocks and Shares ISA's over the past five years. Would could the…

Read more »

Passive and Active: text from letters of the wooden alphabet on a green chalk board
Investing Articles

Is the FTSE 100 good for passive income?

Our writer considers whether investing in the UK’s largest listed companies could help generate generous levels of passive income.

Read more »

piggy bank, searching with binoculars
Investing Articles

Here’s the growth forecasts for International Consolidated Airlines (IAG) shares through to 2028!

Shares of International Consolidated Airlines (LSE: IAG) have risen following a strong set of first-quarter financials last week. Is the…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

These 10 FTSE income stocks could generate £33,137 a year in dividends

Our writer looks at the highest-yielding income stocks on the FTSE 350 and considers what level of return they might…

Read more »

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper
Investing Articles

What to do now before the next stock market crash

The recent stock market volatility seems to have subsided… for now. But that gives investors a chance to get ready…

Read more »

British Isles on nautical map
Investing Articles

Lower tariffs could be a game-changer for this FTSE 100 stock

Diageo shares have lagged the FTSE 100 badly over the last five years. But could lower tariffs on exports to…

Read more »