We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

How much passive income could I earn by investing £100 a month in UK shares?

With just a £100 monthly investment in UK dividend shares, I could achieve a decent passive income stream of over £13,000 a year.

| More on:
Young Caucasian woman with pink her studying from her laptop screen

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.

The idea of passive income is what first attracted me to investing. But what put me off was the impression that I needed a lot of money. It felt like there was no point in starting unless I had at least £10,000.

Now I realise the absurdity of that thought process. I could have started at any time with as little as £100 a month (or less). The key factor was time, not money. The sooner I began, the better. Looking back, I now see how much I could have been earning had I just put £100 a month into dividend stocks.

XXX

But which stocks are best?

Knowing what I know now, the first thing I’d have looked at was the dividend yields of popular FTSE 100 shares.

The table below shows the top five companies with the highest yields currently.

FTSE 100 Dividend yields
Data from dividenddata.co.uk

My initial reaction would be to invest in Phoenix Group, the highest-paying dividend stock. But will it stay that way?

Building passive income takes time, so I need to think long-term. Looking at its history, the company’s been paying a dividend since 2010 but, for much of that time, the yield was between 6% and 7%.

The volatility makes it unreliable. 

Next on the list, Vodafone, recently cut its dividend so it won’t be 10.34% for much longer. Until recently, British American Tobacco was only paying 6% and before 2018, it was only 3%. And M&G has only been paying a dividend for four years.

Which takes me to Legal & General (LSE: LGEN). L&G’s been paying a consistent and reliable dividend for 24 years. In that time, it’s steadily risen from 3% to 8%. When it comes to passive income, consistency and reliability are the key factors I’m looking for. 

Legal & General Group Dividend Yield History

Legal and General dividend data
Graph from dividenddata.co.uk

Yes, it’s had ups and downs so it might dip back below 7% for short periods. But in the long term, I’d expect it to keep growing.

Of course, there are some risks. Profit margins are down to 3.6% from 6.4% last year, so performance is slipping. I also see that earnings per share (EPS) is only 7p, while dividends are currently 20p. That makes the payout ratio well over 200%, meaning dividends could be cut if earnings don’t improve soon. And with a price-to-earnings (P/E) ratio more than double the industry average, the share price could be overvalued.

But it isn’t a growth share so that’s not unusual. The share price is only up 176% in the past 20 years. This equates to annualised returns of 5.22%, which is a fairly acceptable rate for an income share. 

Taking these figures into account and averaging a 2% annual yield increase, I can calculate my potential passive income. By reinvesting the dividends and compounding the returns over 10 years, my pot could grow to £23,642, paying annual dividends of £1,953.

If I continued investing £100 a month for a further 10 years, the total could grow to around £132,149, paying annual dividends of £13,700. That’s a decent £1,141 a month in passive income.

Of course, these are just projections based on the past performance of one stock. Ideally, I would diversify my investment over several reliable dividend stocks to safeguard against a single failure.

Mark Hartley has positions in Legal & General Group Plc. The Motley Fool UK has recommended British American Tobacco P.l.c., M&g Plc, and Vodafone Group Public. 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 and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

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

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »