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.

Turning an empty ISA portfolio into a rising second income of £27,500 a year!

There are now thousands of ISA millionaires in the UK. So the roadmap to earning a substantial second income from stocks has never been clearer.

Passive income text with pin graph chart on business table

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.

In 2003, Lord Lee of Trafford became the first known ISA millionaire. Now, 20 years later, new figures show there are over 4,000 investors with seven-figure ISA accounts. The exciting thing is though, I don’t even need a million to earn a sizeable second income from my portfolio.

In fact, I could eventually generate £27,500 a year in passive income by investing £125 a week in stocks. Here’s how that could play out.

XXX

Planting seeds

According to comparison website Finder, the average person in the UK today has around £17,773 in savings.

Now, it’s unwise to ever put all one’s savings into the stock market. Doing so would leave little room to be able to cover, say, a costly MOT failure or a broken boiler.

So, I’m going to assume here that I start by putting £10,000 into an empty Stocks and Shares ISA. And that I then invest this and a further £6,500 a year (the equivalent of £125 a week) into stocks, achieving an average 8% annual return.

After 20 years, I’d have a very tidy balance of £344,062.

Amazingly though, only £140,000 would be from my own invested savings. The rest would be from my returns compounding year after year, fueled by me choosing to reinvest my dividends.

From this large 8%-yielding portfolio, I could then decide to take a second income of £27,500 a year.

Quality dividend shares

Better still, this income would be rising if I managed to find quality companies with progressive dividend policies. That is, they successfully increase their dividend payments every year.

However, finding these stocks isn’t as easy as it sounds, as the fortunes of companies do change over time.

For example, big banks were long seen as incredibly stable income-generators. Then the 2007/08 financial crisis struck and any progressive dividend policies these banks may have had went out the window. Suddenly many of them were literally struggling to survive.

However, there are Dividend Aristocrats that have successfully paid rising income for many decades. Coca-Cola is one example, having now raised its annual payout for 61 consecutive years.

By diversifying my portfolio with dividend stocks from many sectors, I’m giving myself the best chance of generating sustainable long-term returns.

From seeds to a mighty ISA

Here, I have assumed that I stop reinvesting my dividends after 20 years in order to start enjoying an annual second income.

Bu why stop there?

I mean, if I’m savvy or lucky enough to start investing in my twenties, then I’d only be in my forties after two decades. Maybe I could plough on for another 25 years.

Of course, nobody knows what my average annual returns might look like in future. They may be less than 8% (or more). I might lose money.

But assuming I carried on investing with an 8% return for a further 25 years, my £344k portfolio would grow to an incredible £2.8m.

That would be from £302,000 of my own invested savings!

It’s easy then to see why the UK’s top 50 ISA investors are currently sitting on average pots of £8.5m from investing £20k a year.

Compounding does nearly all of the long-term wealth building once I’ve found the right stocks.

Ben McPoland 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

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 »