How to make £29,800 in passive income by investing £500 a month in stocks

Consistently investing capital into the stock market can build a substantial passive income over time. Here’s how.

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.

A front-view shot of a multi-ethnic family with two children walking down a city street on a cold December night.

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.

Considering the ongoing stock market correction, investing in shares to build a passive income may seem like a crazy idea today. After all, the market capitalisations of many once-loved enterprises have been pummelled into the ground over the past year.

However, given time, plenty of these companies have the potential to bounce back and return to their former glories. Some may even soar higher than before, producing impressive capital gains to build a sizable nest egg for patient investors. So much so that withdrawing just a small piece each year could be enough to generate an impressive retirement income.

Capitalising on cheap stocks

Arguably one of the most lucrative and sustainable investing strategies around is to buy shares when they’re undervalued. Even non-investors know about the “buy low, sell high” rule. But that’s far easier said than done.

Determining whether a stock is undervalued isn’t exactly a simple process. In fact, corporate valuation is so tricky that even professionals trip up on it constantly. Fortunately, in 2022, finding cheap stocks has become far easier. After all, with everything seemingly in freefall, there are buying opportunities all around.

Does that mean investors should just buy every beaten-down income stock to build a passive income? Certainly not.

The macroeconomic environment created by rising inflation and interest rates places a lot of hurdles for businesses to overcome. And the additional uncertainty of activities in Eastern Europe, as well as global supply chain disruptions, doesn’t exactly help the situation.

But in the long run, these are ultimately short-term problems. And it’s likely that the firms with sufficient financial flexibility will weather this storm before eventually recovering.

What’s more, if these companies also have prudent leadership, they may be able to capitalise on the competitive opportunities created. And by investing in these businesses, an investor’s portfolio could grow substantially.

Building a £29,800 passive income

Being a successful stock picker takes a lot of practice and emotional discipline that, sadly, not everyone possesses. Fortunately, even those who don’t have the time to research which shares to buy can still capitalise on the opportunities created in this stock market correction.

How? By simply buying an index fund.

The FTSE 100 has historically yielded an average annual return of around 8%. Investing £500 a month into a low-cost index tracker to replicate this performance over 30 years would lead to a portfolio worth just over £745,000. And following the classic 4% withdrawal rule, investors could enjoy a steady passive income stream of £29,800 each year.

Of course, in practice, things are never this simple. Just because the FTSE 100 has delivered 8% historically doesn’t mean it will continue to do so moving forward. And the average return could be considerably lower over the next three decades.

Furthermore, as 2022 has abruptly reminded everyone, the stock market can be quite a volatile place. And it’s almost guaranteed that another crash or correction will happen again during this time period. Maybe even more than once.

Depending on these unknown factors, it’s possible to have a nest egg worth considerably less than expected. However, given the potential rewards, investing in shares to build a long-term passive income is worth the risks, in my opinion.

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

Sunrise over Earth
Investing Articles

Meet the ex-penny share up 109% that has topped Rolls-Royce and Nvidia in 2025

The share price of this investment trust has gone from pennies to above £1 over the past couple of years.…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

1 of the FTSE 100’s most reliable dividend stocks for me to buy now?

With most dividend stocks with 6.5% yields, there's a problem with the underlying business. But LondonMetric Property is a rare…

Read more »

Investing Articles

Is 2026 the year to consider buying oil stocks?

The time to buy cyclical stocks is when they're out of fashion with investors. And that looks to be the…

Read more »

ISA coins
Investing Articles

3 reasons I’m skipping a Cash ISA in 2026

Putting money into a Cash ISA can feel safe. But in 2026 and beyond, that comfort could come at a…

Read more »

US Stock

I asked ChatGPT if the Tesla share price could outperform Nvidia in 2026, with this result!

Jon Smith considers the performance of the Tesla share price against Nvidia stock and compares his view for next year…

Read more »

Investing Articles

Greggs: is this FTSE 250 stock about to crash again in 2026?

After this FTSE 250 stock crashed in 2025, our writer wonders if it will do the same in 2026. Or…

Read more »

Investing Articles

7%+ yields! Here are 3 major UK dividend share forecasts for 2026 and beyond

Mark Hartley checks forecasts and considers the long-term passive income potential of three of the UK's most popular dividend shares.

Read more »

Hand is turning a dice and changes the direction of an arrow symbolizing that the value of an ETF (Exchange Traded Fund) is going up (or vice versa)
Investing Articles

2 top ETFs to consider for an ISA in 2026

Here are two very different ETFs -- one set to ride the global robotics boom, the other offering a juicy…

Read more »