Share your opinion and earn yourself a free Motley Fool premium report!

We are looking for Fools to join a 75 minute online independent market research forum on 15th / 16th December.

To find out more and express your interest please click here

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

Black woman using smartphone at home, watching stock charts.
US Stock

I asked ChatGPT for the juiciest growth share for 2026, and it said…

Jon Smith is rather unimpressed with the growth share that ChatGPT presents to him, and explains his reasons why in…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Dividend Shares

Here’s a stock lurking in the FTSE 100 with a 9% dividend yield forecast

Jon Smith highlights a FTSE 100 company that he thinks has been in the headlights for share price growth recently…

Read more »

Bus waiting in front of the London Stock Exchange on a sunny day.
Investing Articles

Could a 2026 stock market crash be on its way?

Will the stock market crash next year? Nobody knows for sure, including our writer. Here's what he's doing now to…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

How much do you need in an ISA to target a £5,555 monthly passive income?

Muhammad Cheema explains how an investor could target £5,555 in monthly passive income over time by making use of a…

Read more »

Little girl helping her Grandad plant tomatoes in a greenhouse in his garden.
Investing Articles

With single-digit P/E ratios, here are 3 of the FTSE 100’s cheapest-looking shares!

Only a few FTSE 100 shares are trading at single digit-multiples of earnings! And our Foolish author has highlighted what…

Read more »

Friends at the bay near the village of Diabaig on the side of Loch Torridon in Wester Ross, Scotland. They are taking a break from their bike ride to relax and chat. They are laughing together.
Investing Articles

How much do you need in an ISA to earn a £33,333 passive income?

Discover how to target a five-figure passive income in a Stocks and Shares ISA -- and a top 7.6%-yielding dividend…

Read more »

Tariffs and Global Economic Supply Chains
Investing Articles

Did Donald Trump just deliver fantastic news for Nvidia stock?

With artificial intelligence chip sales set to resume in China, is Nvidia stock worth looking at while it's trading under…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Market Movers

£20,000 of British American Tobacco shares could generate dividends of…

British American Tobacco shares are tipped to deliver more huge dividends over the next three years. Does this make them…

Read more »