For Australians in their early 40s, financial pressures are real. Mortgages, rent, and the rising cost of living often take priority over investing.
Property has long been the nation's default wealth-builder, but it's not the only option.
Superannuation balances tell part of the story. According to the Australian Retirement Trust, someone aged 40 should ideally have around $168,000 in super to stay on track for a comfortable retirement. In reality, average balances sit closer to $131,792 for men and $102,227 for women. That gap may feel daunting, but it's not destiny. With two decades or more until preservation age, there's still plenty of time to build serious momentum.
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Supercharging through work and side hustles
The traditional path to building wealth at this stage is to keep progressing in your career and boosting contributions. Salary sacrifice remains a tax-efficient way to accelerate super growth, especially if you're under the concessional cap.
However, more Australians are finding creative ways to top up their investments. Side hustles — whether it's consulting or turning a hobby into a business — can generate extra income that doesn't have to be consumed by everyday expenses. By directing this additional revenue into a super or a satellite investment portfolio, you're effectively creating a new engine of compounding wealth.
Think of it this way: A modest $500 a month from a passion project, invested wisely over 20 years, could snowball into six figures by retirement. It's not just about working harder in your day job; it's about letting extra streams of income fuel your long-term financial freedom.
Investing outside super for flexibility
Superannuation is powerful but locked away until you're at least 60. That's why it's healthy to build assets outside the system too.
Low-cost trading platforms have made investing in shares and exchange-traded funds (ETFs) easier than ever. A "core and satellite" approach is one way to structure this: Keep a core of broad-market ETFs, such as the Vanguard Australian Shares Index ETF (ASX: VAS), and add satellites in areas like global technology, healthcare, gold, or even gold and private credit.
The aim isn't to speculate wildly, but to diversify beyond the Australian property and banking bias. This way, you're building a portfolio that can capture global growth trends as well as provide resilience when local markets struggle.
The compounding advantage
Warren Buffett once remarked, "Time is your friend; impulse is your enemy. Take advantage of compound interest and don't be captivated by the siren song of the market." At 40, you still have time on your side, but only if you let compounding do the heavy lifting.
Take a simple example. Invest $20,000 and leave it untouched for 20 years. Using the Australian market's long-term average annual return of 9.3%, that one-off investment could grow to more than $115,000.
And that's without adding a cent more.
If you were to tip in extra each month, perhaps from a side hustle or simply tightening the household budget, the end result jumps dramatically. Over 20 years, those steady contributions combined with compounding could build a portfolio worth well into the hundreds of thousands.
The lesson is clear: You don't need a windfall to build wealth. You need time, consistency, and the discipline to keep adding fuel to the compounding fire.
Foolish Takeaway
The average super balance at 40 may be underwhelming, but you have two powerful levers at your disposal: time and creativity. Whether it's salary sacrifice, investing spare cash into ETFs, or building a side hustle that channels new income into a portfolio, the actions you take now will define your financial future.
At 40, you're not behind. You're in the sweet spot to build momentum. The next 20 years can be the compounding decades that set you up for a comfortable retirement and a life of choices and freedom.
