What second income could I earn from investing £20 a week?

Christopher Ruane sets out how he would invest in dividend shares over the long term as he aims to build a second income on a budget.

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.

Middle-aged Caucasian woman deep in thought while looking out of the window

Image source: Getty Images

Work more hours to earn more money? I could do that, as a way to try and build a second income. But an alternative approach is to let others do the hard work while I benefit financially.

One way to try and achieve that is by investing in dividend-paying shares. Indeed, I use that approach at the moment, alongside millions of other investors.

One thing I like about this method is that I can match it to my own circumstances. Investing in shares does not require me to have a lot of money upfront, unlike some second income ideas. But if I only put aside, say £20 a week, how realistic is it that I could build a meaningful extra income stream?

Long-term investing

The answer is that it is realistic, but I need to be patient. This is a long-term project. Basically, my future returns from such an approach will boil down to three elements.

First, how much capital am I investing? Saving £20 a week adds up to £1,040 per year that I can put into the stock market.

Secondly, what is the average dividend yield of the shares I buy? Yield is the percentage of my cost I expect to get back each year in dividends, which will form the backbone of my second income.

Dividends are never guaranteed – Direct Line axed its shareholder payout altogether this year, for example. But if I invest £1,040 in shares that yield an average 5%, that ought to earn me £52 per year in dividends.

Finally, I also need to consider capital gain, or loss. In other words, if I buy shares at one price and later sell them at a higher price, I could make money on top of any dividends. If they fall in value, on the other hand, I may not get back all of the money I originally invested.

Building an investment strategy

That throws up a couple of considerations when building my investment strategy. For example, should I compound the dividends?

Compounding means reinvesting dividends, rather than taking them as cash. That would mean delaying my second income in the hope of making it bigger in future.

In my example, £1,040 invested at a 5% yield would earn me £52 per year. If I reinvest my dividends for a decade at a compound annual growth rate of 5%, after 10 years that same £1,040 ought to be earning me £85 per year.

Another point for me to consider is how to strike the right balance between yield and risk. Just because a share has a high yield now does not mean it will earn me more second income over the long run.

The dividend could be cut, or completely axed, like in the Direct Line example. That is why I diversify my portfolio across a number of shares. But it also explains why I do not choose shares just because of their yield. Instead, I aim to buy into high-quality businesses selling at attractive prices.

After a decade, investing £20 a week and compounding at 5% annually, I ought to be earning about £655 each year in dividends. That is closer to some handy extra cash than a substantial second income — but it could help me earn even more over time.

C Ruane has no position in any of the shares 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

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

Are Barclays shares trading at a 50% discount?

On some metrics, Barclays shares could be looked at as half price. Is this a fair way to look at…

Read more »

Landlady greets regular at real ale pub
Investing Articles

After toppling 11%, are Wetherspoons shares too cheap to miss?

Wetherspoons shares are sinking after a disappointing trading update on Friday (20 March). Is the FTSE 250 firm now a…

Read more »

The flag of the United States of America flying in front of the Capitol building
Investing Articles

2 S&P 500 tech titans to consider for a Stocks and Shares ISA 

Our writer sees a few blue chips from the S&P 500 that are worth considering for a Stocks and Shares…

Read more »

Group of young friends toasting each other with beers in a pub
Investing Articles

JD Wetherspoon’s share price takes a sobering 10% dip!

JD Wetherspoon's share price tanked today (20 March), after the pub chain published its latest results. James Beard reckons it’s…

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

I asked ChatGPT when the Taylor Wimpey shares turnaround is coming and it said…

Taylor Wimpey shares have fallen a long way from all-time highs. Might a stunning recovery be on the cards for…

Read more »

Long-term vs short-term investing concept on a staircase
Investing Articles

My JD Wetherspoon shares just fell 12% in a day! Here’s what I’m doing

JD Wetherspoon shares just fell sharply on news of lower profits. But are these short-term challenges or is there a…

Read more »

Santa Clara offices of NVIDIA
Investing Articles

Nvidia stock price forecast: could we see $300 in 2026?

Nvidia stock has paused for breath recently. However, Wall Street analysts seem to believe that it’s just a matter of…

Read more »

Older Man Reading From Tablet
Investing Articles

How to shelter a SIPP from a nasty stock market crash

Edward Sheldon outlines some simple strategies that could help SIPP investors protect their wealth against an equity market meltdown.

Read more »