How much passive income could a £20k ISA generate in a year?

The FTSE 100 could turn £20,000 into an investment returning £680 per year. But for passive income investors, that’s just the start of the story.

| 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.

ISA coins

Image source: Getty Images

The FTSE 100 currently has a dividend yield of 3.4% – enough to turn £20,000 in a Stocks and Shares ISA into an investment that can return £680 per year. In passive income terms, that’s not exciting.

Over time, however, the equation can look much more positive. That’s because stocks have two important things going for them when it comes to generating cash for investors. 

Compounding

The first big advantage with stocks is the opportunity to reinvest dividends in order to compound returns over time. And this can be a powerful force for income investors. 

Reinvesting dividends from a £20,000 investment at 3.4% per year results in £937 in year 10, £1,316 in year 20, and £1,848 in year 30. And some stocks might offer the chance to compound at higher rates.

Shares in British American Tobacco (LSE:BATS) currently have a 7.2% dividend yield. At that rate, a £20,000 investment returns £2,840 in year 10, £5,822 in year 20, and £11,935 in year 30.

That’s a serious return. But the opportunity to reinvest dividends isn’t the only – or even the biggest – reason for investors looking for passive income to consider stocks as potential investments.

Growth

Companies can also increase the amount they pay out in dividends per share. So as well as owning more shares over time, investors can get more income from each share they own.

Some businesses have stronger records than others in this regard. British American Tobacco, for example, has an impressive history of growing its dividend per share over decades. 

During the last 10 years, those increases have averaged around 4.5% per year. And that can make a significant difference for investors. 

A £20,000 investment with a starting yield of 7.2% that grows at 4.5% per year can return £2,139 in year 10, £3,323 in year 20, and £5,161 in year 30. And that’s without reinvesting cash along the way.

Combination

Reinvesting income at high rates of return into businesses that can increase their dividend can yield great results. But investors need to think about the long-term picture.

In the case of British American Tobacco, the company has an impressive record of dividend growth. There are, however, reasons to be wary about this going forward.

For some time, the firm has been offsetting declining cigarette volumes with higher prices. While that has been very effective in the short term, I don’t think it’s a strategy with a long shelf life.

Furthermore, the longer it carries on, the sharper the eventual decline is likely to be. The question is when this happens and how far new products like nicotine pouches can make up the shortfall.

ISA investing

With where the stock market is right now, I think bonds might be a good option for investors looking for income in the next couple of years. But over the long term, stocks are the asset I prefer. 

There are two key elements that investors focusing on dividend stocks need to consider. The first is the yield and the second is the likely growth. 

Finding the balance between these two is key. But those who are able to do this could find themselves with an ISA that provides significant passive income.

Stephen Wright has no position in any of the shares mentioned. The Motley Fool UK has recommended British American Tobacco P.l.c. 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

Investing Articles

I asked ChatGPT to settle the ISA v SIPP debate once and for all. It said…

Instead of working out whether an ISA or SIPP is the better tax wrapper, Harvey Jones called the robots in.…

Read more »

Middle-aged white male courier delivering boxes to young black lady
Investing Articles

Amazon shares: overpriced or a possible bargain?

Christopher Ruane thinks Amazon shares look pricier than he normally likes -- but also reckons they could be a potential…

Read more »

Female Tesco employee holding produce crate
Investing Articles

In a jittery market, could Tesco shares be a defensive choice?

Could Tesco shares be a safe haven in nervous markets, given that consumers always need to eat? Our writer is…

Read more »

British coins and bank notes scattered on a surface
Investing Articles

How much might £10,000 in Rolls-Royce shares soon be worth? Let’s ask the experts

Do Rolls-Royce shares look like a good buy after recent price falls? City analysts still appear bullish, but global events…

Read more »

Queen Street, one of Cardiff's main shopping streets, busy with Saturday shoppers.
Investing Articles

Take a deep breath! £10,000 invested in Greggs shares a year ago is now worth…

Someone who bought Greggs shares a year ago is nursing a paper loss. Our writer digs into the reasons why…

Read more »

Mature black woman at home texting on her cell phone while sitting on the couch
Investing Articles

Whatever happened to the stock market crash?

The stock market refuses to crash, despite the Iran war. But Harvey Jones says lots of FTSE 100 shares have…

Read more »

Petrochemical engineer working at night with digital tablet inside oil and gas refinery plant
Investing Articles

BP’s share price will keep surging in 2026, according to this broker

BP’s share price is in a strong upward trend right now. And one City brokerage firm seems to believe that…

Read more »

Picture of an easyJet plane taking off.
Investing Articles

These 4 red flags mean I’m avoiding easyJet shares like the plague!

easyJet shares have slumped by around a quarter during the past month. Does this represent a dip-buying opportunity? Royston Wild…

Read more »