Want to become a stock market millionaire? Here’s what NOT to do

You need to avoid these mistakes if you want to become rich.

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.

Making a million in the stock market might seem like an impossible task at first. But, if you have a regular savings plan in place and invest your money sensibly, it is entirely possible to retire with a £1m pension pot.

For example, to build a pot of £1.1m all you need to do is put away £400 a month for 40 years and achieve an average annual return on investment of 7% (slightly below the FTSE 250 annual return for the past decade).

However, most investors fail to make the most of the opportunities offered to them by the market because they make a few critical mistakes.

So, if you want to retire a millionaire, here is what NOT to do with your money.

What NOT to do

In reality, there are only two things we can control as investors. When we buy and sell, and fees. We have no control over the global economy or day-to-day market movements. With this being the case, we have to make the most of what we can control.  

The simplest way to improve returns is to cut costs. Even though there has been an enormous shift away from high-cost investment funds over the past 10 years, there are still some investment managers out there who believe they can get away with charging 2% a year or more to look after your money — nothing short of daylight robbery.

The numbers say a thousand words. If you invest £10,000 of your hard earned cash into an FTSE 250 tracker fund with an expense ratio of 0.2%, assuming an average annual return of 7%, over an investment horizon of four decades, this initial £10,000 investment will grow to £145,000 including fees. 

In the same scenario where fees are 2% per annum rather than 0.2%, after 40 years compounding, the end value is only £72,000. A staggering difference of £73,000.

So, the first step to becoming a millionaire retiree is to search around for the cheapest funds and broker accounts.

You can’t control the market 

Tip number two is harder to implement. Most investors over trade, and not only does this increase your average cost, but studies have shown that overtrading usually results in investors missing the majority of market gains. 

Indeed, studies show that if investors try to time the market, 99% of the time they get out too soon or too late and don’t buy back in until the bottom has well and truly passed.

The best tactic to ensure you don’t make the same mistake, is to ignore the market on a day-to-day basis. Warren Buffett has always said he makes investments based on the assumption that the market will close tomorrow and not open again for another 10 years. If you are saving for retirement, it might be best to employ the same tactic.

These aren’t the only common mistakes investors make, but they are the easiest to prevent. Ignoring day-to-day market movements and finding the cheapest investment offerings will put you on the right track to making a million.

Rupert Hargreaves owns no share mentioned. The Motley Fool UK has no position in any of the shares mentioned. 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

Mature black woman at home texting on her cell phone while sitting on the couch
Investing Articles

Could this cheap FTSE 100 stock be the next Rolls-Royce?

Paul Summers casts his eye over a battered-but-high-quality FTSE 100 stock. Is this the next top-tier company to stage a…

Read more »

ISA Individual Savings Account
Investing Articles

Hesitant over a Stocks and Shares ISA? Here’s a way to deal with scary markets

Volatile stock markets are scaring potential investors away from getting started with their first Stocks and Shares ISA in 2026.

Read more »

This way, That way, The other way - pointing in different directions
Market Movers

Standard Life’s announced a £2bn deal but its share price is largely unchanged. Why?

James Beard considers why the Standard Life share price didn’t take off today (15 April) after the group announced it…

Read more »

Happy parents playing with little kids riding in box
Investing Articles

Up 12% in a month, Hollywood Bowl is a UK dividend stock on a roll

This 5%-yielding dividend stock was one of the top performers in the FTSE 250 index today. What sent it flying…

Read more »

Close-up of children holding a planet at the beach
Investing Articles

Young investors are taking the stock market on a rollercoaster ride. Here’s how retirees can buckle up

Mark Hartley reveals the volatile impact that younger investors are having on the stock market and how UK retirees can…

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

£7,500 invested in Aviva shares 5 years ago is now worth…

A lump sum pumped into Aviva shares half a decade ago has grown a lot. Andrew Mackie looks at the…

Read more »

Young female hand showing five fingers.
Investing Articles

Could £20,000 invested in these 5 dividend shares produce £14,760 of passive income over the next 10 years?

James Beard considers the potential of dividend shares to deliver amazing levels of passive income. Here are five that have…

Read more »

Workers at Whiting refinery, US
Investing Articles

At 570p, is it too late to consider buying BP shares?

Since the end of February, when the conflict in the Middle East started, BP shares have soared nearly 20%. But…

Read more »