Here’s how to aim for a £10k second income using an ISA

Zaven Boyrazian shows how a long-term investing strategy can help build a sizable portfolio and even unlock a £10,000+ income stream at the same time.

| More on:
ISA coins

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.

When investing for the long run, a Stocks and Shares ISA can be a powerful tool for unlocking a second income of £10,000+. And even modest investors with only £450 to spare each month can begin working towards this target right now. Here’s how.

Step 1: unlock the power of compounding

Let’s start by understanding what the goal is. By following the 4% withdrawal rule, a portfolio needs to be worth at least £250,000 to generate an annual passive income of £10,000.

This is where compounding comes to the rescue. On average, the UK stock market has generated an 8% return each year. And by drip feeding £450 each month at this rate of return, the time needed to reach £250,000 works out to be just shy of 20 years, starting from scratch.

That means even someone with no savings at the age of 40 still has more than enough time to build a solid nest egg and secure a five-figure second income before retirement.

Step 2: invest

One of the easiest ways to deploy money into the stock market is with an index fund. But for those feeling more adventurous, stock picking can open the door to potentially phenomenal results.

Take Melrose Industries (LSE:MRO) as a prime example. Over the last 20 years, the once-industrial engineering conglomerate has expanded its market-cap by 1,453%. But when dividends are thrown into the mix, the total return is actually closer to 3,188%!

That’s the equivalent of a 19.1% annualised return. And investing £450 a month at this rate not only reaches the goal of £250,000 within just 12 years, but also goes on to grow to £1.2m if the investor waits the full 20 years. And withdrawing 4% of a £1.2m portfolio translates into an annual second income of £48,000.

Still worth considering?

Today, Melrose is a very different business with a very different management team. The company has transitioned from an industrial turnaround specialist into an aerospace pureplay operating under the GKN brand. And with a £7.4bn market-cap, expecting a near-20% annualised return is likely too enthusiastic.

But that doesn’t mean Melrose doesn’t hold some interesting possibilities. Its transition into an aerospace company is rapidly approaching completion. And the results so far have been quite extraordinary, with profit margins more than doubling in the process.

Combining this with supply chain resiliency, along with a wider surge in civil and defence aerospace spending, Melrose’s revenue growth has similarly been surging. And looking out to 2029, management expects this momentum to grow its free cash flow from around £100m to £600m.  

Is this guaranteed? Of course not. Restructurings are fraught with execution risks. And the impact of poor decisions can take some time to materialise in the financials. But even if Melrose executes flawlessly, the same might not be true for some of its key customers.

If Boeing or Airbus fail to stay on schedule in terms of building new aircraft, demand for Melrose’s engine components and aircraft structures could suffer. The same is true for its defence customers, who could encounter their own supply chain challenges due to geopolitical interference.

Nonetheless, considering Melrose’s long-term potential, I feel these are risks worth taking. That’s why I’ve already added the shares to my portfolio.

Zaven Boyrazian has positions in Melrose Industries Plc. The Motley Fool UK has recommended Melrose Industries 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

US Tariffs street sign
Investing Articles

2 FTSE 100 shares to consider as tariff threats explode!

Are you looking for lifeboats as global trade wars intensify? Royston Wild thinks these FTSE 100 safe haven shares demand…

Read more »

US Tariffs street sign
Growth Shares

2 UK growth stocks exposed to escalating US trade tensions

Jon Smith reviews the latest tariff news impacting UK companies and flags up a couple of growth stocks that could…

Read more »

Abstract bull climbing indicators on stock chart
US Stock

This good news could help to fuel a long-term Amazon share price rally

Jon Smith points out a new deal struck regarding copper and talks through the broader positive implications it could have…

Read more »

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

Down 22% to under £11, is this high-tech FTSE high-flyer a screaming bargain now?

Despite solid growth, strong margins, and rising cash generation, this FTSE tech star has dropped sharply. So is it seriously…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

Here’s how investors could aim for £9,532 in yearly dividend income from this 9.9%-yielding FTSE 250 high-yield gem

A near double-digit yield backed by growing cash flow and long-term contracts makes Energean look like one of the FTSE…

Read more »

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop
Investing Articles

At a bargain-basement valuation under £19, is it time for me to buy this FTSE 100 banking gem?

This FTSE 100 giant has reshaped its business and its balance sheet and is growing fast. With the shares still…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

How to target a growing second income by investing in dividend shares

A portfolio of dividend shares can be a great source of extra income. But it’s best when that income stream…

Read more »

Emma Raducanu for Vodafone billboard animation at Piccadilly Circus, London
Investing Articles

Up almost 50%! Is it too late to buy Vodafone shares?

Vodafone shares are back on the rise after years of decline, but can this rally continue into 2026? Zaven Boyrazian…

Read more »