The power of compounding: What your ASX share portfolio could become by 2040

Let's see how much could be made by investing in ASX shares over the next 12 years.

Smiling young parents with their daughter dream of success.

Images 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

If there's one force in investing that deserves more attention, it is compounding.

In simple terms, compounding is when your returns start generating returns of their own. And over time, that snowballs into something pretty remarkable.

So, what happens when you combine compounding with a long-term mindset, a regular investment plan, and a healthy dose of quality ASX shares?

Let's take a look.

The ASX share plan

Let's imagine you're starting with $10,000 in savings and can invest $500 a month into the share market. You're committed to this strategy until 2040, which gives you 15 years of consistent investing.

And while nothing in the market is guaranteed, we'll assume a 10% average annual return, which is in line with historical long-term returns for the Australian share market, including dividends.

Here's what that could look like:

  • Starting amount: $10,000
  • Monthly investment: $500
  • Time horizon: 15 years
  • Annual return (assumed): 10%

By 2040, your ASX portfolio could grow to a jaw-dropping $240,000+ — built from $100,000 of total contributions and over $140,000 in growth alone. That's the magic of compounding in action.

The key? Quality

Of course, achieving strong long-term returns depends on where you invest. For those confident in picking individual stocks, companies like Goodman Group (ASX: GMG), TechnologyOne Ltd (ASX: TNE), ResMed Inc. (ASX: RMD) and CSL Ltd (ASX: CSL) have proven themselves over time with durable competitive advantages, solid earnings growth, and shareholder-friendly policies.

But if you prefer a simpler approach — or just want to sleep well at night — ASX ETFs offer a fantastic alternative.

Easy diversification with ETFs

Rather than picking stocks, you can buy entire baskets of them through exchange-traded funds. Here are a few ETFs that could help form the foundation of a quality-focused, long-term ASX portfolio.

The Vanguard Australian Shares Index ETF (ASX: VAS) gives you broad exposure to Australia's largest companies, including banks, miners, healthcare, and more. The Betashares Australian Quality ETF (ASX: AQLT) targets high-quality Aussie businesses with strong financials and consistent earnings — a great tool for compounding. And the VanEck Morningstar Wide Moat ETF (ASX: MOAT) offer access to US companies with strong competitive advantages. Perfect for adding global exposure with a quality tilt.

Foolish takeaway

It is easy to feel overwhelmed by day-to-day market noise. But long-term investing doesn't need to be complicated.

Start with what you can. Stay consistent. Focus on quality. And give compounding the time it needs to work its magic.

With a simple plan — like investing $500 a month and letting it grow — your ASX portfolio could transform your financial future by 2040. The hardest part? Getting started. But the sooner you do, the better the results could be.

Motley Fool contributor James Mickleboro has positions in CSL, Goodman Group, ResMed, Technology One, and VanEck Morningstar Wide Moat ETF. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has positions in and has recommended CSL, Goodman Group, ResMed, and Technology One. The Motley Fool Australia has positions in and has recommended ResMed. The Motley Fool Australia has recommended CSL, Goodman Group, Technology One, and VanEck Morningstar Wide Moat ETF. 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 well-dressed couple at a luxury resort celebrate successful life choices.
How to invest

Why investing $500 a month in ASX shares could make you rich

If you want to become rich, then this could be one way to do it.

Read more »

A man with a wide, eager smile on his face holds up three fingers.
How to invest

Beginner investor? Here's a simple 3-stock ASX portfolio to get you started

You don't need to start with a big portfolio. Here's how simple it could get.

Read more »

Beautiful holiday photo showing two deck chairs close-up with people sitting in them enjoying the bright blue ocean and island view while sipping champagne and enjoying the good life thanks to Pilbara Minerals share price gains in recent times
How to invest

The easy way to build significant wealth with ASX shares

Here's the easy way to succeed in the investing world.

Read more »

A panel of four judges hold up cards all showing the perfect score of ten out of ten
How to invest

How to build the perfect ASX share portfolio

How is it possible? Let's find out.

Read more »

Happy young man and woman throwing dividend cash into air in front of orange background.
How to invest

How to become a millionaire by investing in ASX shares

It isn't as hard as you think to become rich with investing.

Read more »

Man drawing an upward line on a bar graph symbolising a rising share price.
How to invest

The power of compounding: What $1,000 a month in ASX shares could become

Compounding is your best friend in the world of investing.

Read more »

$100 Australian notes on top of each other.
How to invest

How to build a winning $250,000 ASX share portfolio starting from zero

These are the steps I would take to grow wealth with ASX shares.

Read more »

Legendary share market investing expert and owner of Berkshire Hathaway Warren Buffett
How to invest

5 Warren Buffett quotes to become a better ASX share investor

It could pay (literally) to listen to the Oracle of Omaha's words of wisdom.

Read more »