How I’d start earning a passive income with £100 a month in 2021

I’m intending to start building a passive income stream in 2021. And I plan to begin with an investment of just £100 a month.

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.

I’m intending to start building a passive income stream in 2021. And I plan to start with an investment of just £100 a month.

Passive income stream

I reckon it’s relatively straightforward to build a passive income stream with a set investment plan and a little patience. I say ‘set investment’ plan because I think investing my money is the easiest way to build a passive income stream.

At present, the best savings account on the market offers an interest rate of less than 1% per annum. To generate a passive income of, say, £10,000 a year at this rate, I would need to put away £1m.

However, the FTSE 100 currently supports an average dividend yield of around 3.5%. According to my calculations, based on this rate of return, I’d need a savings pot of £285k to generate an annual passive income of £10k.

Setting up the plan

The first step on my journey is to set up a regular investment plan with an online stockbroker. Most online platforms now offer this service. It starts from as little as £25 a month and can be a great way to automate the investment process.

I think automating the process is the best strategy for me when building a passive income. Doing this will allow me to concentrate on my day-to-day work without having to spend time picking investments. It’s usually cheaper as well. Trading in and out of positions can quickly become expensive when taking into account all taxes and charges.

I plan to use a combination of the FTSE 100 and FTSE 250 to build my savings pot. The reason why I plan to use to lead index is that it’s stuffed full of blue-chip income stocks. These companies support desirable dividend yields, but their growth leaves much to be desired.

On the other hand, the smaller companies in the FTSE 250 tend to grow at a faster rate. Indeed, over the past three decades, the FTSE 250 has produced an average annual return for investors in the region of 12%. That’s compared to a return of 8% per annum for the FTSE 100.

Combined, I reckon it may be possible to achieve an annual return of around 10%.

Savings pot

Based on this projection, I think it’s possible to build a savings pot that has the potential to produce a passive income stream of £10,000 a year in two decades. This assumes my monthly contribution starts at £100 and increases at a rate of 15% a year.

Then, when my money has reached its target value, I can invest it in the FTSE 100 and look forward to a dividend yield of 3.5% every year.

What’s more, as I’m only putting away £1,200 a year to start, I can save the money in a Stocks and Shares ISA. Thanks to the tax benefits these wrappers provide, the income I earn on my final investment value will be entirely tax-free.

Rupert Hargreaves 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

This way, That way, The other way - pointing in different directions
Investing Articles

As the FTSE indexes sink, these unique dividend shares are making investors money

These two dividend shares are in positive territory for the month and outperforming the major FTSE indexes by a significant…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Down 15% in days, are Rolls-Royce shares suddenly a bargain again?

Rolls-Royce shares have been heading south over the past couple of weeks. This writer thinks that makes sense -- but…

Read more »

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

What would a 40-year-old need to put into an empty SIPP to target monthly passive income of £1,000?

From a standing start at 40, how might someone target a four-figure monthly income stream from their SIPP? Christopher Ruane…

Read more »

British flag, Big Ben, Houses of Parliament and British flag composition
Investing Articles

As the ISA deadline approaches, UK investors have the opportunity to buy cheap shares

In recent weeks, equity markets have fallen significantly due to the conflict in the Middle East. As a result, many…

Read more »

Array of piggy banks in saturated colours on high colour contrast background
Investing Articles

£5k left in a Stocks and Shares ISA? 2 top ETFs to consider buying in April

Ben McPoland highlights a pair of very different ETFs that he thinks could help generate long-term wealth inside an ISA…

Read more »

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

Could a £20,000 ISA end up generating £20,000 of passive income each year?

Could a Stocks and Shares ISA ultimately cover its own cost each year with the passive income it produces? Christopher…

Read more »

A young black man makes the symbol of a peace sign with two fingers
Investing Articles

2 top stocks to consider buying after this week’s FTSE carnage

Investors looking for beaten-up stocks to buy for the long term have a lot of great options after the recent…

Read more »

Smart young brown businesswoman working from home on a laptop
Investing Articles

A stock market crash could be a gift for long-term investors

A stock market crash could present some outstanding buying opportunities. But the key to taking advantage is knowing what to…

Read more »