Turning my £20k savings into £20k a year in passive income!

Passive income is the holy grail for many investors. Here, Dr James Fox details his investment strategy for generating £20k a year from his savings.

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.

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

Image source: Getty Images

We’d all love to generate passive income, right? Naturally, it’s something of a privilege — the ability to earn money by doing almost nothing at all.

But to generate passive income, we’ve got to have a pot of money to invest. So what if I had £20k in cash, how could I use this to generate a life-changing amount passive income?

The starting point

Firstly, of course, I could look at getting a buy-to-let property and use that money as my deposit. But while it can be lucrative, being a landlord isn’t exactly ‘passive’. I’ve done that and the returns weren’t good enough, plus my money was locked away in property.

I prefer to invest in stocks. And I can do this simply by opening an account with a broker, such as Hargreaves Lansdown — it only takes minutes.

Using the Hargreaves Lansdown platform, I can open a Stocks and Shares ISA. This allows me to make investments in a tax-free environment.

Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, neither does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.

Investing

If I invested £20,000 today, even in some of the largest yielding stocks on the FTSE 100, I’d only receive around £1,600 a year in passive income. That’s fine, but it’s clearly not a life-changing sum. I’m looking for £20k a year!

Instead, if I wanted to earn £20,000 a year from my initial investment, I’d need to practice something called compounding, or a compound returns strategy. This is essentially the process of reinvesting my returns every year.

By doing this, I’ll start earning interest on my interest. Thus the growth rate increases over time. So the longer I leave it, the faster it will grow.

Compounding

When it comes to compounding, we normally say that we should be investing in dividend stocks. For example, I could invest in a stock paying a 5% yield — which isn’t guaranteed — and then I would reinvest that dividend when it’s paid year after year.

But in reality, some businesses do the compounding for us. What I mean is, instead of paying a dividend to their shareholders, they continue to invest their profits in their business. Several US-based tech companies have done this, like Amazon and Apple — they’re now trillion-dollar companies.

But it’s easier to practice compounding with dividend stocks. After all, it means I have the power to reinvest my money, not some executive in San Fransisco. Plus, while dividends aren’t guaranteed, they’re more reliable than share price gains.

The power of reinvesting

Well, to generate £20,000 a year, I’m going to need at least £250,000. That’s because I could invest £250k in dividend stocks, like Legal & General with its 8% dividend yield.

So how do I get there? Let’s imagine I’m able to achieve low-double-digit annualised portfolio growth, say 11%. That’s slightly above the FTSE 250‘s average annual growth of 10.6% recorded between 1992 and 2022.

Assuming I can actualise an 11% growth rate, it would take me 23 years to turn my £20k into £250k. That might sound like a long period of time, but it would be worth it.

I can also help my portfolio growth by contributing more funds on a monthly basis. If I added just £200 a month, I could reach £250k in just 17 years.

John Mackey, former CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool’s board of directors. James Fox has positions in Hargreaves Lansdown Plc. The Motley Fool UK has recommended Amazon.com, Apple, and Hargreaves Lansdown 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

Two elderly people relaxing in the summer sunshine Box Hill near Dorking Surrey England
Investing Articles

Forget the FTSE 100 and come back after summer? Here’s my plan!

With the FTSE 100 moving around in a volatile way, should our writer just forget all about it for a…

Read more »

Young female hand showing five fingers.
Investing Articles

£20,000 invested in a Stocks and Shares ISA 5 years ago could now be worth…

The last five years have been something of a roller coaster for the markets. How would £20k in a Stocks…

Read more »

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

Stock market correction: a once-in-a-decade chance to build big passive income?

Ben McPoland takes a closer look at a high-yield passive income stock from the FTSE 250 that investors have been…

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

In volatile markets, could National Grid dividends be a safe haven?

National Grid offers a dividend yield well above the FTSE 100 and aims to keep growing its payout per share.…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Investing Articles

Down 25%, are Barclays shares simply too cheap to ignore?

Barclays shares have given up a chunk of their recent gains since the Middle East powder keg ignited. Should investors…

Read more »

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

How much would someone need in an ISA to target a £1,000 monthly second income?

Christopher Ruane explains how someone could use an empty Stocks and Shares ISA to target a four-figure monthly second income…

Read more »

Investor looking at stock graph on a tablet with their finger hovering over the Buy button
Investing Articles

Are investors taking a big gamble chasing Rolls-Royce shares higher and higher?

With Rolls-Royce shares having fallen back from their peak, the temptation to see this as a buying opportunity must be…

Read more »

Cargo containers with European Union and British flags reflecting Brexit and restrictions in export and import
Investing Articles

Down 70%, is Fevertree Drinks a share to consider buying at 815p?

Fevertree reported its 2025 earnings today and the investors liked what they saw. So is this a share to consider…

Read more »