I’m aiming to turn an empty £20k ISA into passive income of £38,313 a year

I could generate an exceptional passive income stream by investing just one year’s ISA allowance. I wouldn’t stop there though.

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.

Two gay men are walking through a Victorian shopping arcade

Image source: Getty Images

I’ve been taking advantage of recent stock market volatility to snap up high-yielding FTSE 100 stocks to build a lifelong passive income for my retirement.

UK blue-chip businesses generate some of the most highest yields in the world, but particularly today.

Yields are calculated by dividing the dividend per share by the share price. So when a stock falls, the yield automatically rises. With the FTSE 100 down 500 points since topping 8,000 in February, many dividend stocks now offer irresistible levels of income.

I’d load up an empty ISA today

Cigarette maker Imperial Brands currently yields 8.04%. The decline in smoking weighs on its share price but that income easily beats inflation and looks resilient.

Paper and packaging group DS Smith has been hit by the decline in e-commerce due to the cost-of-living crisis but, as a result, yields 6.21%. Its shares are likely to recover once inflation and interest rates peak and shoppers feel better off.

Wealth manager M&G now yields 9.93% as falling markets hit assets under management. Ultra-high dividends can be fragile but this one looks sustainable, due to the group’s capital strength.

I’ve bought its shares recently, along with Legal & General Group, Lloyds Banking Group, Glencore and Taylor Wimpey, all of which combine super-high dividend yields with strong recovery prospects.

I don’t own a crystal ball and can’t say when they will recover. While I wait, I’ll reinvest all my dividends to pick up more stock at today’s low prices.

I reckon it’s possible to generate a passive income stream of almost £50,000 a year by investing just one year’s ISA allowance. As ever, there’s a catch. It will take time and it’s not guaranteed.

Since the 1980s, the FTSE 100 has delivered an average total return of 8% a year. If I invested £20k at age 25, and it grew at 8% a year, I’d have a thumping £547,333 by age 68.

These things take time

If my portfolio yielded 7% a year, which it could given my focus on high income stocks, it would generate a second income of £38,313 a year. And I wouldn’t even have to touch my capital, which hopefully would keep growing. Not a bad return from £20k, although inflation will erode its real value over time.

If I invested my £20k at age 35 instead, I could expect £253,521 by age 68, assuming the same 8% annual return. With a yield of 7%, that would still generate income of £17,747. Starting at 45, I might only end up with £117,429, or income of £8,220 a year.

While my figures are speculative, the underlying principle holds. Investing relatively small sums in high-yielding FTSE 100 shares can generate incredible returns, for those who start early and stick with it.

Naturally, I won’t just invest one year’s ISA allowance. I’d invest year after year to build the biggest possible portfolio and passive income stream. Starting early is the key. Today’s low FTSE 100 valuations and high yields are all the incentive I need to get stuck in.

Harvey Jones has positions in Glencore Plc, Legal & General Group Plc, Lloyds Banking Group Plc, M&G Plc, and Taylor Wimpey Plc. The Motley Fool UK has recommended DS Smith, Imperial Brands Plc, Lloyds Banking Group Plc, and M&G 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

Lady wearing a head scarf looks over pages on company financials
Investing Articles

Is April a good time to start buying shares?

Wondering whether now's a good time to start buying shares to build wealth? History suggests it is, says Edward Sheldon.

Read more »

A senior group of friends enjoying rowing on the River Derwent
Investing Articles

How much passive income could a Stocks and Shares ISA pump out every year?

Regular investing inside a Stocks and Shares ISA could lead to the equivalent of £141 a week in tax-free passive…

Read more »

Fans of Warren Buffett taking his photo
Investing Articles

With the FTSE 100 down 5%+ investors should remember this legendary quote from Warren Buffett

Warren Buffett is widely regarded as the greatest investor of all time. And he says that the best time to…

Read more »

Inflation in newspapers
Investing Articles

1 FTSE 100 stock that could benefit from higher inflation

For most companies, inflation is a risk. But for one FTSE 100 firm, higher input costs could be an opportunity…

Read more »

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

The 2026 stock market sell-off could be a rare opportunity to build wealth in an ISA

The recent stock market sell-off has led to some shares falling 20% or more. This could be a great opportunity…

Read more »

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

It’s down another 13%! Analysts were dead wrong about the Greggs share price

The Greggs share price continues to fall and analysts have been revising their share price targets down further. Dr James…

Read more »

Burst your bubble thumbtack and balloon background
Investing Articles

Is the stock market about to reach breaking point?

Private credit has a problem with the emergence of artificial intelligence. And it could be set to create issues across…

Read more »

BUY AND HOLD spelled in letters on top of a pile of books. Alongside is a piggy bank in glasses. Buy and hold is a popular long term stock and shares strategy.
Investing Articles

A once-in-a-decade chance to buy this S&P 500 stock?

As investors focus on oil prices and the conflict in Iran, Stephen Wright's looking at potential opportunities in the S&P…

Read more »