A major financial milestone made headlines in the Australian business world in June — the Commonwealth Bank of Australia (CBA) became the first Australian company ever to hit a $300 billion market valuation.

To put that number in perspective:

CBA is now bigger than BHP, and nearly the same size as Apple was in 2011.

That’s the year Tim Cook took over as Apple CEO after Steve Jobs passed away—and at the time, Apple was worth around $300 billion. (Today, Apple sits at a staggering $3 trillion).

This isn’t just an interesting financial headline—it offers some important insights for everyday investors, especially those focused on building wealth through property.

Why CBA matters (beyond the share market)

You might be wondering: what does the size of a bank have to do with property investing?

A lot, actually.

CBA is the largest lender in Australia, and its performance, size, and stability have a direct relationship with the strength of the property market.

If you have a mortgage (or are planning to get one), there’s a good chance CBA is involved.

As the leader in home lending, its financial results and policies influence mortgage rates, consumer confidence, and lending practices across the industry.

CBA vs the Big Four

CBA’s $300 billion valuation now puts it almost on par with the combined value of the other three major banks:

• NAB: $118 billion
• Westpac: $113 billion
• ANZ: $87 billion

  Total: ~$318 billion

So yes—CBA on its own is now worth nearly as much as the other three combined. That’s dominance.

How Profitable Is It?

According to the latest results, CBA made around $9.5 billion in profit last financial year. For the first half of FY24 alone, it posted $5.1 billion, suggesting it’s on track to hit similar numbers again.

That means for every $300 billion in market value, the bank is returning about 3% in profit—which is considered a relatively low yield, but also reflective of the incredible investor confidence and stability associated with the brand.

Investors are willing to pay a premium for CBA shares because of the bank’s:

• Consistent dividends
• Stable returns
• Exposure to Australia’s strong property sector

Global Context: How big is big?

It’s not just an Australian success story. To put things into global perspective:

• CBA is now the 10th largest bank in the world by market cap.
• It would be the second-largest bank in Europe, behind only HSBC.
• In the U.S., it still trails behind giants like JP Morgan Chase, which sits at a massive $1.1 trillion valuation.

Still, for a country with just 27 million people, CBA’s scale is remarkable—and a sign of how central the Australian property market and financial system are to national wealth.

What can property investors learn from this?

CBA’s rise to the top reinforces a few key lessons for wealth-builders:

·       Stability wins – Long-term, boring, consistent performance often beats chasing trends. CBA isn’t flashy, but it’s a proven engine of value.

·       Property drives wealth – CBA’s dominance is tied to home lending. As more Australians invest in property, the demand for credit rises—and so does CBA’s strength.

·       Population growth underpins scale – Australia’s growing population fuels housing demand, which supports both banks and investors in the long term.

Final Thought

Whether you’re investing in property or shares, the principle is the same: focus on quality, scale, and long-term fundamentals.

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This article is based on an episode of Custodian’s The Double Shot podcast.