How I’d invest £300 a month to earn a passive income

Regular monthly investing could be the simplest path to living off a passive income. Here is a look at how I would start.

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.

When investing, your capital is at risk. The value of your investments can go down as well as up and you may get back less than you put in.

Read More

The content of this article is provided for information purposes only and is not intended to be, nor does it constitute, any form of personal advice. Investments in a currency other than sterling are exposed to currency exchange risk. Currency exchange rates are constantly changing, which may affect the value of the investment in sterling terms. You could lose money in sterling even if the stock price rises in the currency of origin. Stocks listed on overseas exchanges may be subject to additional dealing and exchange rate charges, and may have other tax implications, and may not provide the same, or any, regulatory protection as in the UK.

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.

sdf

Stock market investors can create a passive income starting with relatively modest amounts and investing for the long term. It’s possible to set up an automated investment process that is simple to understand and that has a high probability of success over the long run. However, returns are never certain. So, as an investor I try to mitigate risks by diversifying my investments.

History shows that the long-run average annual return on the S&P 500 index is around 10%. This is despite several wars, the great depression of the 1920s, and the 2008 global financial crisis. Although future returns are not guaranteed, the long history of the S&P 500 can provide some guidance to past returns.

Start early for a bigger passive income

By investing £300 a month in an index tracker or diversified fund, it’s possible to build a substantial pot with enough time. The key is to start investing early. The earlier an investor starts, the more time investments have to compound.

For example, a 25 year-old investor who invests £300 per month in an S&P 500 index tracker for 30 years could build a pot of £678,000. This assumes a long-run average annual return of 10%. In the investment management industry, a widely used annual withdrawal rate is 4%. This is an estimation of how much an investor could withdraw without running out of money. So, in this example, the investor could receive a passive income of £27,000 per year.

This method of investing can provide a passive income for this investor by the age of 55. Now, if the investor starts investing 10 years later, at the age of 35 instead, the total investment pot could grow to £228,000. Again, this assumes an average return of 10%. This is not guaranteed and the total investment could be lower if the average return was lower. At a 4% withdrawal rate, this smaller pot would provide the investor a much lower passive income of £9,120.

The lesson from this example is to start investing as early as possible. It could significantly boost your passive income in later years.

Regular investments can smooth volatility

At times of crisis, investors have been known to panic. The 2020 Covid-19 crash is a recent example of investor panic and uncertainty. In February and March 2020, the S&P 500 index fell by approximately 35% from peak to trough.

At the time, there was much uncertainty about the effects of the coronavirus on the economy and companies. Such moments can be excellent opportunities to buy cheaper stocks. Of course, there’s a risk that cheap stocks can decline further. So, instead of trying to time the market, I’d set up a regular monthly investment plan. As the old investment adage goes: “Time in the market beats timing the market”. Trying to time the market can be a costly mistake for many investors, in my opinion. Instead, I think greater passive income can be achieved by holding good quality stocks for a long time.

An alternative to investing in the S&P 500 index is to choose a good quality global fund or investment trust. I particularly like Fundsmith Equity fund. It is a concentrated and global fund focused on long-term investing in high-quality companies.

Should you invest, the value of your investment may rise or fall and your capital is at risk. Before investing, your individual circumstances should be assessed. Consider taking independent financial advice.

Harshil Patel owns units in Fundsmith Equity Fund. 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

Number three written on white chat bubble on blue background
Investing Articles

Just released: the 3 best growth-focused stocks to consider buying in July [PREMIUM PICKS]

Our goal here is to highlight some of our past recommendations that we think are of particular interest today, due…

Read more »

Portrait of a boy with the map of the world painted on his face.
Investing Articles

Warren Buffett’s Berkshire Hathaway dumped this growth stock. Here’s why I won’t

Eyebrows were raised when Warren Buffett's company invested in this Latin American fintech disruptor a few years ago. But now…

Read more »

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

£15k to spend? 3 UK shares, investment trusts and ETFs to consider for a £1,185 second income

By harnessing a range of different dividend stocks, I'm confident this mini portfolio might pay a large long-term second income.

Read more »

Portrait of elderly man wearing white denim shirt and glasses looking up with hand on chin. Thoughtful senior entrepreneur, studio shot against grey background.
Investing Articles

Is Tesla stock about to crash?

Tesla stock was on the slide today, shedding around $80bn in market value. What's going on with the electric vehicle…

Read more »

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

Should British investors consider buying Apple stock while it’s down 14% in 2025?

Apple stock has underperformed in 2025, falling more than 10%. Is this the buying opportunity UK investors have been waiting…

Read more »

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

2 AI growth shares that I think are still undervalued

Jon Smith flags up two AI growth shares that aren't as overhyped as some peers, making them appealing for him…

Read more »

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

Where is the next Nvidia stock right now?

Nvidia stock has delivered jaw-dropping gains. Here are 10 growth shares that have the potential to also produce big returns…

Read more »

Young female business analyst looking at a graph chart while working from home
Investing Articles

Could these FTSE 100 stocks explode in July?

Looking for FTSE stocks that could catch fire this month? Here are the share price prospects of two popular London…

Read more »