£0 in an ISA? Here’s how I’d aim to turn it into a second income of £500 per month

Our writer shares how they would invest in high-yield income stocks in an attempt to turn an empty ISA into a reliable passive income stream.

| 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.

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.

British bank notes and coins

Image source: Getty Images

Earning a substantial second income by investing in the stock market is a goal shared by investors around the world. But what about achieving it after starting with an empty ISA?

While the prospect of building a reliable passive income from scratch might seem daunting, it’s entirely possible for me to achieve. That’s as long as I’m willing to embrace a long-term investment horizon and implement an appropriate strategy.

The merits of investing inside an ISA

ISAs offer a remarkable opportunity for wealth growth. First and foremost, they provide a tax-efficient environment where any capital gains and income generated from investments are shielded from taxation. This enables investors like me to maximise returns in the long run.

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.

In addition, ISAs offer a wide range of investment options ranging from stocks and bonds to mutual funds. Consequently, there are plenty of ways investors can diversify their portfolio and manage risk effectively.

Targeting high-yield income stocks

But to work towards achieving a second income worth £500 a month, I’d focus on buying stocks inside my ISA. Specifically, I’d look to construct a portfolio consisting of a diversified basket of dividend shares.

By targeting high-yield stocks, my aim is to receive passive income in the form of dividend payments. Furthermore, by reinvesting all my dividend income at the beginning of my journey, I’d benefit from the miracle of compound returns.

This will enable me to grow my portfolio exponentially over the years, thereby enabling me to earn substantial dividend income further down the line.

To illustrate, let’s say I manage to achieve an average yield of 7%, which I could work towards at the moment by investing in companies such as Legal & General (8.9% yield), Aviva (7.6% yield), and Rio Tinto (8.2% yield).

After investing £600 a month for nine years, I’d have an ISA worth around £88,000. From here, assuming I could still manage that 7% average yield, my ISA would be capable of generating a tax-free second income amounting to £6,160 each year. This translates into just over £500 per month in dividend income.

The importance of a long-term investment horizon

I’ve made all of that seem rather straightforward, but it’s contingent on a lot of things going right. For starters, dividends are never guaranteed by any company.

All it takes is an unexpected economic downturn for earnings to take a hit. When this happens, companies have less cash to pay out to shareholders, causing them to cut or even suspend dividends.

Inevitably, this would harm my path to achieving a reliable and substantial passive income stream. Nonetheless, I can go a long way towards mitigating these risks by embracing a long-term investment horizon.

Doing so will help me ride out market fluctuations and avoid making impulsive decisions during downturns. After all, by holding onto my investments even during stock market crashes, I’ll have the potential to recover losses and benefit from the market’s natural upward trajectory in the long run.

Matthew Dumigan 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 For Beginners

1 FTSE 250 stock I like and 1 I’ll avoid after the stock market correction

Jon Smith analyses the move lower in certain FTSE 250 companies over the past month and picks one that looks…

Read more »

Playful senior couple in aprons dancing and smiling while preparing healthy dinner at home
Investing Articles

Is April 2026 a great time to buy Lloyds shares?

Lloyds shares have been flying over the last two years. And there's one factor that could mean the bank continues…

Read more »

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

Want to aim for a £500 second income each month? Here’s how much it takes

Christopher Ruane digs into the numbers and mechanics that could let someone with no shares today build an annual second…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

Down 95%, what might it take for the Aston Martin share price to rise 2,000%?

The Aston Martin share price has collapsed. Our writer considers what it might take for it to regain some ground…

Read more »

Investing Articles

How are Diageo shares looking in April 2026?

It's been an eventful year so far, but what has the impact been for Diageo shares, and where might they…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

P/Es below 7! 3 staggeringly cheap shares despite yesterday’s rally

Investors who fear they have missed their opportunity to buy cheap shares as the stock market recovers might want to…

Read more »

ISA coins
Investing Articles

Want to know what UK investors have been buying in their ISAs?

Looking for stock, trust, and fund ideas this April? Royston Wild discusses what Brits have been stuffing in their Stocks…

Read more »

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper
Investing Articles

Why aren’t people buying Greggs shares by the bucketload?

Greggs' shares remain in the doldrums. But should Foolish investors consider pouncing while others won't? Paul Summers takes a fresh…

Read more »