Investing £3.33 into an ISA every day from 22 could result in a £60,000 passive income

Millions of Britons use the Stocks and Shares ISA as a way to build wealth and generate an income. However, many aren’t fully utilising this vehicle.

| More on:

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.

Young black man looking at phone while on the London Overground

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.

I already had a Stocks and Shares ISA when I started work at 22, and it was topped up by inheritance and sporadic gifts. However, it wasn’t until much later that I started making regular contributions to my ISA.

At 22, the rationale for not contributing was simple: “I’ll be earning more in the future, so why now?” But this mindset can mean missing out on the power of compounding. The key advantage for young investors isn’t how much they invest, but how long their money has to grow. It’s all about time in the market.

The rationale

Investing £3.33 per day is the equivalent of investing £100 per month. That would have been about 5% of my first paycheque. It might not sound like a lot, especially as it would now take me more than three months to afford one Tesla share, but it adds up over time. Plus, investors can use fraction shares to gain access to more expensive stocks.

The secret ingredient is compounding. This is what happens when investors keep their money invested over the long run. It’s like a snowball that, as it gets bigger, can pick up even more snow.

As we can see from the below graph, £100 really starts to compound after 15 years — this example assumes a growth rate of 10% annually. Towards the end of the 46-year period, £100 of monthly contributions should seem very affordable, while the portfolio will be growing at an impressive rate.

Why 46 years? Well, that’s the number of years between me starting work at 22 and my predicted retirement age at 68.

Source: thecalculatorsite.com

Getting there

So, we’ve got the formula. But how can we actually turn £3.33 a day into a small fortune? Well, many novice investors will invest in index-tracking funds. This is a wise move that provides diversification and relatively low risk.

Another option could be an exchange-traded fund (ETF) or even a conglomerate like Berkshire Hathaway (NYSE:BRK.B). Warren Buffett’s holding company provides exposure to a broad mix of businesses, from insurance to consumer goods, with a proven track record of compounding shareholder value.

Buffett’s value investing approach, focusing on undervalued companies with strong fundamentals, has proven successful over decades. However, investors should consider risks such as Berkshire Hathaway’s large size potentially limiting future growth opportunities, the challenge of finding attractively priced acquisitions in the current market, and the eventual succession of leadership as Buffett ages.

Despite these concerns, Berkshire Hathaway’s strong balance sheet, cash-generating businesses, and proven investment philosophy make it an attractive option for long-term investors seeking stability and growth potential. Over 10 years, the average return is 12.3%. This is one I’m adding to my daughter’s pension.

The passive income part

In the above example, £100 a month would grow into almost £1.2m over 46 years. Now, with all that money invested in stocks, funds, and bonds with an average yield of 5%, an investor would receive around £60,000 a year or £5,000 monthly.

Of course, there’s a caveat. £60,000 in 46 years will likely feel like £20,000 in today’s money. However, when using the ISA, this would be entirely tax free and would nicely complement a pension.

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.

James Fox has no position in any of the shares mentioned. The Motley Fool UK has recommended Tesla. 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

A senior man using hiking poles, on a hike on a coastal path along the coastline of Cornwall. He is looking away from the camera at the view.
Investing Articles

Is Diageo quietly turning into a top dividend share like British American Tobacco?

Smoking may be dying out but British American Tobacco remains a top dividend share. Harvey Jones wonders if ailing spirits…

Read more »

Young woman holding up three fingers
Investing Articles

Just released: our 3 top income-focused stocks to consider buying in December [PREMIUM PICKS]

Our goal here is to highlight some of our past recommendations that we think are of particular interest today, due…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Tesco’s share price: is boring brilliant?

Tesco delivers steady profits, dividends, and market share gains. So is its share price undervaluing the resilience of Britain’s biggest…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

1 huge takeaway from the Martin Lewis investing presentation

Martin Lewis showed how returns from stocks have smashed the returns from cash savings over the last decade. But here’s…

Read more »

Middle aged businesswoman using laptop while working from home
Investing For Beginners

I think the best days for Lloyds’ share price are over. Here’s why

Jon Smith explains why Lloyds' share price could come under increasing pressure over the coming year, with factors including a…

Read more »

A graph made of neon tubes in a room
Investing Articles

£5,000 invested in the FTSE 100 at the start of 2025 is now worth…

Looking to invest in the FTSE 100? Royston Wild believes buying individual shares could be the best way to target…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

Can the BAE share price do it again in 2026?

The BAE share price has been in good form in 2025. But Paul Summers says a high valuation might be…

Read more »

Investing Articles

Can Rolls-Royce, Babcock, and BAE Systems shares do it all over again in 2026?

Harvey Jones examines whether BAE Systems and other defence-focused FTSE 100 stocks can continue to shoot the lights out in…

Read more »