Here’s how I’d target £10k passive income a year by investing just £100 a week

Think we need to be rich to retire on a solid passive income stream that we don’t have to work for? I think it’s feasible for most of us.

| 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.

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.

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.

My investing goal is to build up some passive income for when I retire. I’ve been working towards it for some years now.

But how would I start in today’s tough times?

After a few years of soaring inflation and high interest rates, I have a fair bit less cash to spare each month.

But low Stocks and Shares ISA charges mean we really don’t need to be rich to invest in shares. And it’s suprising how much £100 per month, or even just £50, could grow in the long term.

To many, that’s the cost of a night out. But I don’t waste money on nights out.

Favourite stocks

The hardest thing for me is picking the next stock to buy. There are just so many on the FTSE 100 these days paying good dividends and on low valuations.

That’s actually good, as it makes it easier to build a diversified ISA and reduce the overall risk. But as an illustration, I’ll use one of my long-term holdings, Aviva (LSE: AV.)

The first thing to notice is that the share price has been volatile, as we can see from this chart:

Look at those dividends

The second thing to note about Aviva is that it has a forecast dividend yield of 7.5%. That’s big, and analysts think the earnings will be there to cover it over the next few years.

The worst thing about a dividend is that there’s no guarantee, and it can be the first thing to be cut in hard times.

The insurance sector can be cyclical too, and I don’t expect Aviva to be just smooth sailing in the coming decades.

But it’s a sector that has thrown off lots of cash over the years. And the longer I hold, the smoother I expect the overall result to be. I also buy shares in other sectors to offset the risk.

Compound magic

I wouldn’t put just £100 into shares in one go, as the transaction costs would eat into that too much. But if I save it in my ISA I could soon build up, say, £1,000 to invest.

After a year, I could add £75 in dividends to the pot for every £1,000 in Aviva shares. In reality, I’d buy something different each time, but I’ll stick with the 7.5% dividend to simplify the sums.

If I keep doing it, and reinvesting my dividend cash each year, things should build up nicely thanks to the power of compounding.

After five years, I could have £31,393 in my pot. Give it 10 years, and I could reach £76,462. And just 15 years could be enough to get me to £141,163. A 7.5% dividend on that amount would produce passive income of £10,587 per year.

Just dividends

This is just from dividends, with no share price gains. However, it is based just on one snapshot right now. And I expect ups and downs from Aviva over the long term.

It’s just an illustration. But as part of a diversified portfolio, I’d expect to beat the pants off a Cash ISA in 20 years.

Alan Oscroft has positions in Aviva Plc. 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

Sunrise over Earth
Investing Articles

Meet the ex-penny share up 109% that has topped Rolls-Royce and Nvidia in 2025

The share price of this investment trust has gone from pennies to above £1 over the past couple of years.…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

1 of the FTSE 100’s most reliable dividend stocks for me to buy now?

With most dividend stocks with 6.5% yields, there's a problem with the underlying business. But LondonMetric Property is a rare…

Read more »

Investing Articles

Is 2026 the year to consider buying oil stocks?

The time to buy cyclical stocks is when they're out of fashion with investors. And that looks to be the…

Read more »

ISA coins
Investing Articles

3 reasons I’m skipping a Cash ISA in 2026

Putting money into a Cash ISA can feel safe. But in 2026 and beyond, that comfort could come at a…

Read more »

US Stock

I asked ChatGPT if the Tesla share price could outperform Nvidia in 2026, with this result!

Jon Smith considers the performance of the Tesla share price against Nvidia stock and compares his view for next year…

Read more »

Investing Articles

Greggs: is this FTSE 250 stock about to crash again in 2026?

After this FTSE 250 stock crashed in 2025, our writer wonders if it will do the same in 2026. Or…

Read more »

Investing Articles

7%+ yields! Here are 3 major UK dividend share forecasts for 2026 and beyond

Mark Hartley checks forecasts and considers the long-term passive income potential of three of the UK's most popular dividend shares.

Read more »

Hand is turning a dice and changes the direction of an arrow symbolizing that the value of an ETF (Exchange Traded Fund) is going up (or vice versa)
Investing Articles

2 top ETFs to consider for an ISA in 2026

Here are two very different ETFs -- one set to ride the global robotics boom, the other offering a juicy…

Read more »