How I’d invest £100 a month to aim for a passive income for £48,605 a year for life

It’s possible to generate a five-figure passive income by investing as little as £100 a month. The key is to start buying shares as early as possible.

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.

Smart young brown businesswoman working from home on a laptop

Image source: Getty Images

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.

When I’ve had enough of actively working for a living, I plan to live on the passive income generated by my investments. Yet building a big enough portfolio to fund a comfortable retirement won’t happen overnight.

Unless someone is lucky enough to have a juicy lump sum to begin with, or a kingsize income (neither of which applies to me), the wealth has to build slowly and steadily. I’ve been investing for more than 25 years, so I’m already some way there. But with another 15 years to go before retirement, I’m still going flat out.

I invest in two ways. First, by making regular monthly contributions. Second, by pumping in lump sums whenever I have cash to spare.

Long-term thinking

I started by investing in a few low-cost exchange traded funds (ETFs) to give me a broad spread of shares across the FTSE 100, the S&P 500, and emerging markets. Now I’m trying to turbo-charge my portfolio by investing in individual UK shares.

Thanks to recent volatility, now looks a great time to buy dirt-cheap, high-yielding FTSE 100 stocks like Aviva, Lloyds Banking Group, Glencore, and Taylor Wimpey. I buy whenever the market dips and reinvest all my dividends for growth.

Now let’s say I was starting from scratch at age 30. At that age, even a relatively small sum such as £100 a month has time to roll up into something much bigger.

Let’s assume I increased my contribution by 10% a year and my portfolio matches the FTSE 100’s average long-term total return of 8% a year. By age 68 I’d have built up an investment portfolio worth a staggering £1,216,884.

I’d have made total contributions of £436,852 and generated £780,031 in compounding dividend income and share price growth.

There’s a long-standing financial planning model known as the 4% rule, which states that if an investor draws that percentage of their savings each year their pot will never run empty.

I’ll leave some capital, too

If I followed that, my pot would generate £48,605 a year in retirement income. Unfortunately, that won’t be worth as much in real terms as it is today, thanks to inflation. But it should still generate a pretty decent return. If I need more, I can dip into my capital, although I’d rather leave that for my family.

Investing is a long-term game, and the earlier I get going, the better. If I didn’t start putting away £100 a month until age 40, I would only have £375,444 by age 68. That’s despite hiking my contributions by 10% a year and generating the same 8%-a-year total return as before. It’s amazing how much damage a lost decade can inflict.

Under the 4% rule, I’d only generate income of £15,018 a year. Although, that’s better than if I’d done nothing.

There are no guarantees with investing. I might generate less than 8% a year, I might generate more. There’s also the risk that the market crashes just before I retire. Although if it does, I would simply leave my money invested and wait for equities to recover, as they always do in the end. That way my portfolio will continue to generate capital growth in retirement, as well as all that passive income.

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.

Harvey Jones has positions in Glencore Plc, Lloyds Banking Group Plc, and Taylor Wimpey Plc. The Motley Fool UK has recommended Lloyds Banking Group Plc. 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

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

I’d follow Warren Buffett and start building a £1,900 monthly passive income

With a specific long-term goal for generating passive income, this writer explains how he thinks he can learn from billionaire…

Read more »

Investing Articles

A £1k investment in this FTSE 250 stock 10 years ago would be worth £17,242 today

Games Workshop shares have been a spectacularly good investment over the last 10 years. And Stephen Wright thinks there might…

Read more »

Asian man looking concerned while studying paperwork at his desk in an office
Investing Articles

10%+ yield! I’m eyeing this share for my SIPP in May

Christopher Ruane explains why an investment trust with a double-digit annual dividend yield is on his SIPP shopping list for…

Read more »

Investing Articles

Will the Rolls-Royce share price hit £2 or £6 first?

The Rolls-Royce share price has soared in recent years. Can it continue to gain altitude or could it hit unexpected…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

How much should I put in stocks to give up work and live off passive income?

Here’s how much I’d invest and which stocks I’d target for a portfolio focused on passive income for an earlier…

Read more »

Google office headquarters
Investing Articles

Does a dividend really make Alphabet stock more attractive?

Google parent Alphabet announced this week it plans to pay its first ever dividend. Our writer gives his take on…

Read more »

Young mixed-race couple sat on the beach looking out over the sea
Investing Articles

Could starting a Stocks & Shares ISA be my single best financial move ever?

Christopher Ruane explains why he thinks setting up a seemingly mundane Stocks and Shares ISA could turn out to be…

Read more »

Investing Articles

How I’d invest £200 a month in UK shares to target £9,800 in passive income annually

Putting a couple of hundred of pounds each month into the stock market could generate an annual passive income close…

Read more »