Could I use a stock market crash to turn £20k into half a mil in just over a decade?

A stock market crash might sound terrifying to some but it can also present a once-in-a-lifetime opportunity to accumulate generational wealth.

| More on:

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.

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

Image source: Getty Images

While I wouldn’t wish a stock market crash on anyone, savvy investors know a good opportunity when they see one. The trick to making the most of such an opportunity is being prepared.

As the saying goes: failing to prepare is preparing to fail. 

Nobody knows for sure when the next crash will come so it’s critical to keep some savings aside. With enough cash on hand, a cunning investor can grab the right stocks at the right time!

However, it’s important to understand the psychology of market downturns and have a strategy for taking advantage of lower prices. Turning £20k into half a million pounds is no easy feat – and involves some risk!

Here’s a breakdown of how I’d try to do it.

Maximise my ISA potential

Twenty grand is a fair bit of money so I’d need to spend some time saving to start with. It’s also the ideal amount to fill a Stocks and Shares ISA with the full yearly allowance. Using an ISA would help reduce any capital gains tax I pay on my returns.

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.

Smart investors know that a market crash isn’t a reflection of individual companies’ long-term value. Many solid businesses experience temporary price drops simply because of market-wide panic. During a crash, well-established and financially sound companies often become available at a discount. 

So it’s important to identify which stocks have high intrinsic value but have been pulled down by the broader market.

Identifying quality stocks

Consider a stock like British American Tobacco. It’s provided annualised returns of 6% over the past 30 years. Certainly, there’s been some ups and downs in that time but overall, it’s proven a steady gainer. 

Currently, the dividend yield‘s over 8% but on average it’s stood around 5% for the past few decades.

Assuming those averages held, £20k invested would grow to almost £470,000 in 30 years, with dividends reinvested. Buying at the bottom of a crash would likely deliver even greater returns.

Don’t like tobacco? Let’s consider Legal & General (LSE: LGEN), the well-established £13bn UK insurance provider. Its annual dividend has increased at a rate of 13.3% a year since 2008, rising from 4p per share to 20p. 

However, it holds substantial liabilities tied to long-term policies, making it vulnerable to adverse market conditions that can affect its ability to generate returns on reserves.

That may be one reason the price is down 11% this year.

Looking long-term however, its 30-year annualised returns are also around 6%. The yield’s currently at 9.3% but on average it’s been around 6.5% since 2014. With those averages, £20k could grow to half a million in just 27 years.

Looking back to the 2008 financial crisis, the stock fell 75% that year. That would be like today’s 220p price falling to 55p. But in the 10 years following the crash, the price recovered at an annualised rate of almost 22% a year. 

If that happened again, a £20k investment could balloon to over £500,000 in less than 13 years! 

I wouldn’t put everything in one stock though. Rather, I’d aim for similar average returns by diversifying my investment across a portfolio of stocks. This helps to reduce exposure to industry- or company-specific risks.

Mark Hartley has positions in British American Tobacco P.l.c. and Legal & General Group Plc. The Motley Fool UK has recommended British American Tobacco P.l.c. 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

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

As Diageo shares sink, this ‘opposite’ stock in the FTSE 250 is soaring 

Diageo shares are falling due to lower demand for alcohol. But this backdrop is boosting other stocks such as this…

Read more »

Chalkboard representation of risk versus reward on a pair of scales
Investing Articles

Is BAE Systems the FTSE 100’s newest AI stock?

Defence stock BAE Systems has proved a good buy for investors of late, but could it get a further boost…

Read more »

Female Tesco employee holding produce crate
Investing Articles

Under £5 now! Here’s why I think Tesco’s share price should be trading closer to £7

Tesco’s share price looks too cheap to me for a business growing profits, boosting cash flow and undertaking buybacks at…

Read more »

A row of satellite radars at night
Investing Articles

Could the SpaceX IPO make Barclays shares this year’s top FTSE 100 idea?

Barclays is the exclusive regional lead for the UK in the upcoming SpaceX IPO, but its shares still trade at…

Read more »

A young Asian woman holding up her index finger
Investing Articles

This FTSE 100 dividend hero once again tops AJ Bell’s most-bought list

After more than four decades of rewarding shareholders, Legal & General remains one of the most bought FTSE 100 stocks…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

£20,000 invested in BT shares 2 years ago is today worth…

BT shares have doubled in price over two years — yet the valuation still looks low. Here’s why the next…

Read more »

Middle-aged white man pulling an aggrieved face while looking at a screen
Investing Articles

Down 5.5%, why is the Rolls-Royce share price slipping this week?

The Rolls-Royce share price was one of the FTSE 100’s biggest fallers as markets opened this week. Mark Hartley examines…

Read more »

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

Is this household name now the FTSE 100’s best bargain stock?

This FTSE 100 firm is having a torrid time. But Paul Summers wonders whether now is exactly when buyers should…

Read more »