How to build a passive income with just $300 a month in 2023

It isn't difficult to build a passive income stream using ASX shares with just $300 a week.

| More on:
Traveller in hammock relaxing on the beach.

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

We'd all love a strong stream of secondary, passive income to supplement our day jobs, and maybe replace them one day. What could be better than seeing passive income coming into your bank account without you having to work or it? But sadly, getting there isn't quite as easy as imagining yourself swinging in a beach-side hammock.

The good news is that ASX shares give us a great way of building a strong and reliable stream of passive income here in 2023.

But just how much would investing $300 a month into ASX shares get us in terms of secondary income?

Using ASX shares to build a second income

Well, that depends on two factors: how long you invest for, and what kind of rate of return you can enjoy.

I think using passive exchange-traded funds (ETFs) on the ASX is a great way to gain passive income. Especially for those of us who don't enjoy sifting through annual reports and income statements, and doing the whole 'stock picker' thing.

Instead of comparing the revenues and profits of Coles Group Ltd (ASX: COL) against Woolworths Group Ltd (ASX: WOW), you can just buy an ASX 200 ETF and buy up the whole lot. An ASX 200 ETF tracks the ASX 200 index, which in itself represents the largest 200 companies listed on the Australian share market.

That means you can own a piece of all 200 of those shares just by owning this one fund. That's everything from Commonwealth Bank of Australia (ASX: CBA) and Telstra Group Ltd (ASX: TLS) to Harvey Norman Holdings Limited (ASX: HVN) and Nine Entertainment Co Holdings Ltd (ASX: NEC). And Coles and Woolies, of course.

As such, an ASX 200 ETF is a perfect bottom-drawer investment that you can habitually add money to over a long period of time, with the confidence that you will achieve the broad return of the entire Australian stock market. Plus, these sorts of funds tend to pay out generous passive income in the form of dividends. You'll get franking credits as well, which can further boost your wealth.

No one knows what the future holds in terms of returns. But one ASX 200 ETF, the SPDR S&P/ASX 200 Fund (ASX: STW), has averaged a return of 7.88% per annum since 2001. 4.68% of that 7.88% comes from passive dividend income.

How much passive income can $300 a week get you?

So let's assume an investor puts $300 a week into this ETF and reinvests their passive income back into the fund. After ten years (assuming that same rate of return), you would have a total sum of $55,176. Using that, you could draw on this nest egg to generate a passive income of just over $215 a month. See already, we are getting close to what you've been investing every month back in passive income thanks to compounding.

But let's say that our investor starts putting away $300 a week when they are 20 and takes stock after 25 years when they are 45 years old after reinvesting their dividends that whole time. Well, then you'd have a lump sum worth a whopping $281,944, which could be capable of generating around $1,100 per month in passive income.

Add another ten years onto that, and our pile would have swelled to $672,915, spinning off $2,624 every month in secondary income. Now you're well on your way to a very happy and comfortable retirement indeed. All by investing $300 a month into a single ASX ETF.

Of course, this is all hypothetical. An ASX 200 ETF like STW might not generate that same 7.88% return per annum over the next 20 years as it has for the past 20. It could be even higher, or lower, for all we know.

But what we do know is that investing in shares has always been one of the best and most reliable ways of generating passive income. All you need is patience and discipline.

Should you invest $1,000 in Spdr S&p/asx 200 Fund right now?

Before you buy Spdr S&p/asx 200 Fund shares, consider this:

Motley Fool investing expert Scott Phillips just revealed what he believes are the 5 best stocks for investors to buy right now... and Spdr S&p/asx 200 Fund wasn't one of them.

The online investing service he’s run for over a decade, Motley Fool Share Advisor, has provided thousands of paying members with stock picks that have doubled, tripled or even more.*

And right now, Scott thinks there are 5 stocks that may be better buys...

See The 5 Stocks *Returns as of 6 March 2025

Motley Fool contributor Sebastian Bowen has positions in Telstra Group. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has positions in and has recommended Harvey Norman. The Motley Fool Australia has positions in and has recommended Harvey Norman and Telstra Group. The Motley Fool Australia has recommended Nine Entertainment. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on Dividend Investing

Hand holding Australian dollar (AUD) bills, symbolising ex dividend day. Passive income.
Opinions

2 ASX dividend shares I'd buy after the stock market sell-off

Both of these income stocks offer appealing dividend yields.

Read more »

Man holding out Australian dollar notes, symbolising dividends.
Dividend Investing

2 outstanding ASX dividend stocks down 30% I'd buy right now

Analysts think these income stocks are cheap buys after falling heavily.

Read more »

Person holding Australian dollar notes, symbolising dividends.
Dividend Investing

How I would build a $1,000 monthly passive income stream with ASX shares

It isn't as hard as you might think to build a sizeable passive income.

Read more »

Middle age caucasian man smiling confident drinking coffee at home.
Dividend Investing

3 undervalued ASX dividend stocks paying a remarkable 6%+

Analysts are expecting big payouts from these shares.

Read more »

An ASX investor in a business shirt and tie looks at his computer screen and scratches his head with one hand wondering if he should buy ASX shares yet
Dividend Investing

Where are my dividends? A small error costing shareholders big dollars

There’s millions of dollars in unclaimed funds floating around. Does some of it belong to you?

Read more »

A man holding a cup of coffee puts his thumb up and smiles while at laptop.
Dividend Investing

1 marvellous ASX dividend stock down 33% to buy and hold immediately

Analysts think this stock could be a great pick for income investors.

Read more »

A woman sits at her computer with her chin resting on her hand as she contemplates her next potential investment.
Dividend Investing

Dividend reinvestment plans deliver big discounts on Wisetech, Bendigo Bank, and Woolworths shares

Wisetech, Bendigo Bank, and Woolworths have announced their dividend reinvestment plan share prices.

Read more »

Happy man holding Australian dollar notes, representing dividends.
Dividend Investing

How to earn $50,000 of passive income from ASX shares

The share market can be used by investors to generate significant income. Here's how.

Read more »