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 I’d earn passive income for £100 a month

With £100 a month to generate passive income, Christopher Ruane shares his plan to earn money from shares without having to work for it.

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.

Passive income is exactly what it sounds like. Money that comes in – without having work for it.

That might sound too good to be true. But examples of passive income abound, from inheritance trusts to people who rent out their empty parking places.

XXX

Here is my plan to earn passive income by putting aside just £100 a month.

Shares as passive income ideas

With £100 a month, I’d start saving regularly in a Stocks and Shares ISA. £100 a month might not sound that much. But it adds up to a four figure sum each year. That’s enough for me to start generating passive income streams.

Just putting money away wouldn’t earn me passive income, though. That’s why I’d start to invest in shares. To maximise my passive income streams, I would look for high yielding shares. These are stocks where the dividend is large relative to the share price.

Passive income example

For example, today I could buy a share of British American Tobacco for around £28.32. This year its dividend payout is 215.6p. That equates to a dividend yield of 7.6%.

In other words, if I put £100 into BAT shares this month, I would expect to receive £7.60 over the coming year. I’d also receive any dividends declared in future after that. I’d still own the shares. I could sell them in future if I wanted, though might not recoup my purchase price.

Risks

But things might not work out that way. For example, BAT has paid out a growing dividend since the turn of the millennium – but that is no guarantee of future dividends. Dividends are funded by cash flows. While BAT’s brands such as Lucky Strike allow it to generate meaty cash flows, smoking is declining in many markets. BAT also has a lot of debt it needs to service, eating into free cash flows.

To help lower risk in my passive income plan, I’d diversify. That involves spreading my risk by investing in different shares, across a range of sectors.

Identifying high yield shares

How can I discover high yield shares?

A lot of information sources publish historical share yields. But to generate passive income my interest is in what a share’s future dividends might be. Past dividends are not a reliable guide to future ones.

Take GlaxoSmithKline, for example. The pharma company currently yields 5.8%. For a blue chip name that is attractive. But a little research reveals that GSK has already indicated a likely reduction in its overall dividend level when it splits into two companies soon.

I try to avoid what might be a ‘value trap’. A value trap can be dangerous for unwary investors. Historical data can make it look attractive, but future prospects can be sharply different. That is why I always research my income picks, to try and identify any signs of a possible value trap. I focus on future passive income prospects, not purely historical data.

Compound effect and passive income

Over time, if I keep putting £100 each month into new passive income ideas, I will add more shares to my portfolio. But I would also hope for regular dividends.

Instead of spending this income, I could combine it with my monthly £100 when buying more shares. That compound effect should help my portfolio grow over time – and the passive income will hopefully also increase.

christopherruane owns shares of British American Tobacco. The Motley Fool UK has recommended GlaxoSmithKline. 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 »