Building a $1 million portfolio with ASX shares and the magic of compound interest

Investors can supercharge their long-term gains by tapping into the magic of compound interest.

| More on:
A businesswoman in a suit and holding a briefcase marches higher as she steps from one stack of coins to the next.

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

Building a $1 million portfolio from ASX shares may sound out of reach for many investors.

They may think it would take a lifetime. Or that you’d need a sizeable cash pile to even get started.

But by tapping into the power of compound interest and keeping a long-term investing mindset, these investors might be surprised at the time and size of the initial investments it could take to achieve that $1 million from ASX shares.

Let’s have a closer look.

Two ways to go

Newer investors, or those short on research time, might want to stick to a more passive approach to investing in ASX shares.

You can do this by investing in a wide range of ASX exchange-traded funds (ETFs), which offer diversification with a single stock.

Some ETFs track particular market sectors, from gold miners to financial stocks. Others are intended to mimic the performance of an entire index, like the S&P/ASX 200 Index (ASX: XJO).

Look for ETFs with low management fees, so as not to eat into your long-term, compound interest boosted returns.

If you’re comfortable picking your own ASX shares, or have access to some trusted advice, this opens the door to potentially higher returns, though with some added risk.

Here’s what I mean.

On the higher return end, shares in Nuix Ltd (ASX: NXL), which develops and distributes software, are up a whopping 108% in 2023.

And shares in Codan Ltd (ASX: CDA), which provides products and services in communications, metal detection and mining technology, have soared 92% this calendar year.

You’re really unlikely to find those kinds of returns with ETFs.

So, what about those risks?

Well, if you’d invested in gold miner St Barbara Ltd (ASX: SBM) on 3 January this year, you’d be nursing a loss of 36% today.

And investors who bought into biotech company Mesoblast Ltd (ASX: MSB) on 3 January will be down 53%.

So, if you’re going to be picking individual ASX shares to build your wealth, choose wisely.

How long will it take to reach $1 million with ASX shares?

The amount of time it will take to reach my $1 million goal will depend on two factors.

How much I invest each month, and what types of returns I manage.

Now, there are no guarantees as to future returns.

But in building my ASX share portfolio, I’ll aim for an average annual return of 10% to 11%. And I’ll plan to reinvest any dividends I get to help boost those returns.

Splitting the difference here, I’ll be happy to achieve 10.5% returns over the long term.

And I’ll diligently put aside $200 each week, or $10,400 a year, to invest.

Now let’s plug those figures into the old compound interest calculator.

Here’s what it tells me:

After five years the total value of my ASX share portfolio will be $64,128. That rises to $169,775 after 10 years and $630,560 after 20 years.

Just five years later, after 25 years, the total value of my investments will be $1,102,942.

That’s a tidy sum.

And, thanks to the magic of compound interest, I’ll have only invested $260,000 of my hard-earned money to get there.

Motley Fool contributor Bernd Struben has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on How to invest

A young man wearing glasses writes down his stock picks in his living room.
How to invest

‘Upside for shareholders can be supernormal’: Global fundie’s guide to successful stock picking

This expert has some valuable tips for all ASX investors.

Read more »

A trendy older hipster guy with a long white beard and headphones pulls rockstar hand sign with his hands.
How to invest

Here’s what happens when you invest $50 a month in ASX shares for 40 years

From little things, big things grow.

Read more »

Concept image of man holding up a falling arrow with a shield.
How to invest

Why I’m getting ready for a stock market crash

Market crashes are opportunities in disguise.

Read more »

A man in his 30s holds his laptop and operates it with his other hand as he has a look of pleasant surprise on his face as though he is learning something new or finding hidden value in something on the screen.
How to invest

Warren Buffett just helped drive a US$36 billion profit. Here’s how

The investment guru's company Berkshire Hathaway reported its second-quarter results over the weekend.

Read more »

illustration of the words '1 million' in gold with confetti surrounding it
How to invest

How long would it take to build a $1 million ASX share portfolio investing $500 a month?

These are the steps to take to build a million-dollar portfolio.

Read more »

An older female ASX investor holds a gangster-style fist pump pose showing off gold rings with dollar signs on them.
How to invest

How popular are ASX shares among the rich and wealthy?

And how does your portfolio balance compare to the richest Australians'?

Read more »

Three miners stand together at a mine site studying documents with equipment in the background
How to invest

How to pick the best ASX lithium shares now ‘those frenzied days are over’

Irrational exuberance is now in short supply as lithium prices come back to Earth. It's time to take a measured…

Read more »

A businessman hugs his computer and smiles.
How to invest

64% of surveyed Aussie investors embrace this ‘Warren Buffett method’. Do you?

Warren Buffett likely counts as the investor most of us would like to emulate.

Read more »