How I’d invest £500 monthly to target a £56,400 second income for life

Consistently investing small sums of money in the stock market can lead to a substantial passive income. Dr James Fox explains how it can be done.

| 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.

Two female adult friends walking through the city streets at Christmas. They are talking and smiling as they do some Christmas shopping.

Image source: Getty Images

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.

Few things excite me more than the idea of a second income. However, for now, I’m very much in the building wealth phase, and recognise that I won’t be able to draw a second income for some time.

In the meantime, I’m focusing on smart investments and developing skills that will pave the way for future financial opportunities.

By prioritising my growth, I aim to create a solid foundation that will eventually lead to that coveted second income.

Playing it safe

There are many approaches to investing in the stock market. Some novice investors may take too many risks, putting their money into a small number of stocks.

Others like to play it safe, investing in low-cost tracker funds as an entry point to this occasionally confusing world.

Personally, I prefer a balanced approach. I combine individual stock selections with exchange-traded funds (ETFs) and bonds to diversify my portfolio while still allowing for targeted investments in areas I believe have strong potential.

This strategy enables me to benefit from the stability and diversification of ETFs while also taking advantage of specific opportunities with individual stocks.

Big wealth with small investments

As such, if I were investing £500 a month, I may want to focus on building a small portfolio of funds, ETFs and stocks, and top up those positions when I have the funds available.

For context, the average annualised return of the FTSE 100 over the past decade is approximately 5.22%. But Brexit, Covid and the cost-of-living crisis have pulled it back.

Assuming investors can actualise an average return of 10% going forward, £500 a month could become £1.13m after 30 years. That’s enough to deliver at least £56,400 a year as a second income.

Tracker vs researched investments

Interestingly, over the past decade, an S&P 500 tracker would have delivered just over 10% annualised growth. And this is why it pays to have a diversified portfolio, even when we’re talking about index trackers.

However, I always believe that well-researched investments can beat the index. For example, I’ve doubled my money on several investments over the past year including Abercrombie & Fitch, AppLovin, Celestica, Nvidia, Powell Industries, and Rolls-Royce.

One for growth

As such, novice investors may want build a portfolio that leans on trackers and funds, but also leaves room for some growth-focused investments. One growth-oriented stock that continues to catch my eye at the moment is CRISPR Therapeutics (NASDAQ:CRSP).

I’ve owned shares in this Swiss gene-editing company for over a year, and it’s been pretty wild. Up 60% in January, I’m now back where I started despite no change in the company’s prospects.

CRISPR’s arguably the most advanced in this field of medicine, with world-first gene editing therapies now in use for the treatment of sickle cell disease (SCD) and beta-thalassemia.

Uptake’s likely to be start slowly, given the $2.2m price tag and the time it will take to set up of treatment centres. However, the therapy cost’s actually lower than the assumed lifetime cost of treating SCD and transfusion dependent beta-thalassemia.

It’s a stock I think should be on everyone’s watchlist, and with the price falling, I’m considering topping up my position. However, this is arguably the most speculative of my investments, given its in an early-sales phase.

James Fox has positions in AppLovin Corporation, Celestica Inc, CRISPR Therapeutics, Nvidia, Powell Industries, and Rolls-Royce Plc. The Motley Fool UK has recommended CRISPR Therapeutics, Nvidia, and Rolls-Royce Plc. 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

Investing Articles

I asked ChatGPT if the Rolls-Royce share price is still good value and wished I hadn’t…

Like many investors, Harvey Jones is wondering whether the Rolls-Royce share price can climb even higher in 2026. So he…

Read more »

Finger pressing a car ignition button with the text 2025 start.
Investing Articles

£5,000 invested in FTSE 100 star Fresnillo at the start of 2025 is now worth…

Paul Summers shows just how much those investing in the FTSE 100 miner could have made in a year when…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

Will a Bank of England interest rate cut light a rocket under this forgotten UK income stock?

Harvey Jones says this FTSE 100 income stock could get a real boost once the next interest rate cut lands.…

Read more »

Fireworks display in the shape of willow at Newcastle, Co. Down , Northern Ireland at Halloween.
Dividend Shares

Look what happened to Greggs shares after I said they were a bargain!

After a truly terrible year, Greggs shares collapsed to their 2025 low on 25 November. That very day, I said…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Dividend Shares

Will the Lloyds share price breach £1 in 2026?

After a terrific 2025, the Lloyds share price is trading at levels not seen since the global financial collapse in…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

New to investing in the stock market? Here’s how to try to beat the Martin Lewis method!

Martin Lewis is now talking about stock market investing. Index funds are great, but going beyond them can yield amazing…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

This superb passive income star now has a dividend yield of 10.4%!

This standout passive income gem now generates an annual dividend return higher than the ‘magic’ 10% figure, and consensus forecasts…

Read more »

Young woman working at modern office. Technical price graph and indicator, red and green candlestick chart and stock trading computer screen background.
Investing Articles

£5,000 invested in Tesco shares on 1 January 2025 is now worth…

Tesco shares proved a spectacular investment this year, rising 18.3% since New Year's Day. And the FTSE 100 stock isn't…

Read more »