New Tax Could Trigger Mass Property Sell-Off

6 Hidden Triggers That Could Flip Australia's Housing Boom Overnight! [AusPropertyStrategy101]

September 03, 202512 min read

If I told you that behind Australia’s housing price surge hides six signals of a market turning point, would you believe it? Yes, the RBA cut rates in August to 3.6%, but the minutes reveal deep divisions inside the committee over how much room is left to cut. Today I’m not repeating the media’s daily chatter about rate cuts and price rises. I’m revealing six ignition points almost no one talks about—three of which could flip the market straight into reverse.

What’s the real story behind the rate cuts? Why are big institutions so far apart in their housing forecasts? Most importantly, how long can this housing market rally actually run? While the crowd is scrambling to buy, smart money is already mapping exit plans. Remember: the most dangerous moment is often when everything looks safest. If you don’t want to be among the 20% who buy at the top, watch this to the end.


The Truth Behind the Rate-Cut Party

In August, the RBA cut the cash rate to 3.6%—the third cut this year. On the surface, it’s great for housing. Everyone’s celebrating cheaper borrowing, lighter repayments, easier holding costs, more money to spend, bigger borrowing capacity—and the hope of more cuts ahead. Sounds great, right? But dig a little deeper, and it isn’t that simple.

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The RBA minutes show sharp divisions inside the committee about how much room is left to cut. The big four banks are just as split: CBA says there’s one more cut by year-end, while Westpac thinks November is the last. What does that mean? The easing cycle may be much shorter than people expect. If markets are still partying and the rate cuts suddenly stop—or even turn—what happens to investors who’ve maxed out their leverage?

Roy Morgan’s latest data show 28.4% of mortgage holders are under repayment stress—the highest since January. And note: this came after two cuts. What does that tell us? Even with easing, the rising cost of living is still hitting ordinary households hard.

It reminds me of the psychology in every past housing surge. Each upswing brings a bidding frenzy—classic FOMO. If you see property as a cycle, the bottom is when the curve is at its lowest. Most buyers think prices will keep falling, so they sit out. Sellers, under pressure, try slashing prices to quit—then realise nothing moves and pull listings or stop cutting prices. That’s the sign of a bottom. Only about 1%—the seasoned investors—buy at the bottom. At the bottom of the last two cycles, we at AusPropertyStrategy told all VISION members to act; those who bought are really happy today—of course, they had spare cash and the capacity to borrow, which we planned for them at the beginning of the membership.

After a while, the market stops falling and starts to lift. About 10% of faster-moving investors step in. Then we hit the clearest part of the upswing—right now—when roughly 70% of investors “get it,” rush in, and try to catch the wave. That’s when prices rise fastest. Finally, at the peak, the most cautious 20% see friends and relatives making gains, jump in at last—only to buy the top.

So what, exactly, is driving today’s red-hot market?

The Secret Behind FOMO

People think soaring prices come from “too many buyers, too little stock, and easy policy.” The truth is far more complicated. CoreLogic’s latest report shows that while prices kept rising in July and August, new listings actually climbed 8% over the same period—meaning supply isn’t as tight as most assume. ABS data for Q1 shows only 42% of new mortgages were for owner-occupiers; nearly all the rest were investors. In other words, this surge is being propped up by investment lending, not genuine home-buyer demand.

What’s more surprising: a Mortgage Choice survey found over 60% of investors bid 15%–20% above the local median price—focused on “winning” the auction, not on future rates. In inner-Melbourne, one bidder said, “I’m here to secure the spot—rates can wait.” That “get on the ladder first” mindset is FOMO in its purest form.

This FOMO is harmful, but it won’t automatically trigger a crash. Even if rates rise another 0.5 percentage points in the next twelve months, only 22% of investors would face cash-flow shortfalls where rent no longer covers interest. High, yes—but not a systemic break.

Domain reports that despite faster turnover, average days on market fell from 35 to 28. The quicker pace reflects continued hopes for a low-rate window, rather than blind, no-questions-asked buying. In some areas, price gains have spread from city centres to surrounding satellite cities, suggesting “buying to switch suburbs” is supporting the market, not just a speculative bubble. So, how long can this run last?

Bank and Institutional Forecasts

Major banks and research houses differ in optimism, but most see the upswing continuing for the next 12–18 months, with speed and regional outcomes diverging.

  1. CBA expects national prices up 6% by end-2025: Sydney 6.3%, Melbourne 5.8%, Brisbane up to 7%.

  2. Westpac is more cautious: ~5% for the year, with Sydney 4.5%, Melbourne 5.2%; Brisbane and Perth ~6% and 6.5%.

  3. ANZ sees national gains of 4%–6%: Sydney 5.8%, Melbourne 5.3%, Brisbane 6.1%, and a clear slowdown starting Q1 2026.

  4. KPMG projects only 2% growth in Q1 2026, noting Sydney’s inner city and coastal Victoria as likely outperformers.

Most institutions agree on four points:

  1. National gains will be between 4% and 7%.

  2. Sydney and Melbourne are the main pace-setters.

  3. Brisbane and Perth may rise faster on affordability and migration.

  4. Growth likely peaks around Q1–Q2 2026, then eases.

This time, I agree with the big four: over the next 12–18 months, the trend is to remain stable. So when might the turning point arrive—and prices swing down?

If you have any questions about property investment, please book a free 15-minute discovery call on our website. If you want a team offering one-stop service to help you build a property investment portfolio, achieve financial freedom and retire early, join our VISION Membership by booking a 30-minute obligation-free discovery session to start with. Or to keep it simple, our data-driven buyer's agency service can help. We buy and manage properties for our clients anywhere in Australia. Links to the service are in the description below.

Six Turning-Point Signals

Australia’s housing market swings in the short term but climbs in the long run. Here we’re talking about short-term swings. Under what conditions could this upswing hit a turning point?

1.Major shifts in immigration policy

Immigration is the engine of Australia’s housing boom. More people, more workers, more wealth—direct demand. If that engine weakens or stalls, the investment logic fundamentally changes. Historical data show that for every 1% drop in immigration growth, prices decline by about 0.8% in the following quarter. Cities reliant on migrants like Sydney and Melbourne would feel it most. Yes, during the border closures, government subsidies, fiscal stimulus, and rate cuts can push prices up for a while, but when those boosts fade, the turning point arrives. In the short term, there’s no sign of Australia actively cutting migrant numbers. On the contrary, student visa quotas were just lifted—a new wave of migration may be starting.

2.Rates turning higher

A new hiking cycle would also flip the market. Right now, most expect the RBA to pause cuts in September. If inflation pushes back toward 3%, the RBA will have to lift again. Every 25-bp rise adds about A$120 to the average monthly repayment and tightens investor borrowing power. Rising rates force a broad re-pricing and re-valuation. The RBA’s decision depends on inflation and jobs, and the latest data show a hint of inflation re-acceleration—though the broader trend still needs monitoring.

3.Removing investor tax breaks

Negative gearing and the CGT discount are regularly floated for change by the media and think tanks. A recent proposal limits these perks to the first investment property. If adopted, over 600,000 investors could lose about 30% in annual tax benefits—pushing some high-leverage buyers to exit early. At the same time, the Prime Minister has said these concessions won’t be changed—but no one knows how long that stance lasts.

4.Higher taxes on investors

Beyond removing perks, unions and some states are pushing vacancy taxes and higher stamp duty on investment properties. Victoria’s Treasury has proposed lifting vacancy taxes and adding progressive stamp duty for multi-property owners. If enacted, these measures would further squeeze cash flow and make high-leverage positions hard to sustain.

5.APRA tightening credit

APRA has said it will keep the 3% serviceability buffer and won’t let banks loosen standards. A financial stability review noted that cutting the buffer to 2.5% could inflate borrowing capacity by A$276 billion—an unacceptably high risk. But if the buffer rises to 3.5%, credit would contract sharply—and housing would adjust in turn.

6.The 2028 election

In election years, investors commonly wait, because it's hard to tell what policies will be implemented. Investor decisions slow, and monthly investor loan applications drop. The affordability issue will likely dominate the next election. If the winning party swings hard on immigration or taxation, housing reacts immediately.

Among these six, the most important signals are immigration, taxation, and APRA credit policy—because once they shift, they can trigger a near-term turning point. Based on what we see now, the chance of such shifts in the next 12–18 months looks low. That’s one reason I expect the market to keep rising over that period. The only unknowns are the month-to-month pace and the total magnitude of gains—no one knows it.

So how should investors respond? Buy or wait?

What Smart Money Does

Owner-occupiers: Any time can be the right time to buy, because one typically holds the property for ten years or more. Pre-pandemic, cycles were roughly five years. Post-pandemic, cycles have shortened to two to three years—you’ll likely ride three cycles in a decade, smoothing out the cost of missing the absolute bottom. If your finances are ready, buy.

Investors: It’s still a solid entry window. In Australian residential property, time in the market beats timing the market. If you can time it, returns improve—but most people can’t. I can’t nail the exact bottom either; at best, I buy near it. Over the past five years, those who bought with us at AusPropertyStrategy—including VISION members who bought consistently—have done very well.

If the market does peak around the second half of 2026, what should seasoned investors prepare for? First, total your properties’ annual net negative cash flow at today’s rates—that’s the cash buffer you should reserve for housing. If, beyond that, you still have spare cash and borrowing capacity, consider adding some high-cash-flow assets to prepare for the next 18 months. But if you’re just starting your portfolio, always prioritise capital growth.

For many investors, this is the last window before the train leaves. If you haven’t boarded, move quickly—the next one may not arrive for one to two years.

For all our AusPropertyStrategy channel fans, I’m excited to launch our very first webinar in the APS Market Insights series! It’s happening this Thursday, September 4th at 8 PM Sydney time. In this live session, we’ll break down everything that’s been happening in the Australian housing market throughout August,  including key trends, local economic fundamentals, and what’s happening globally that could affect property prices in Australia. We’ll wrap up with a live Q&A. Seats are limited, so make sure to register now on our website — or just click the link in the description below.


Watch the video version of the blog on YouTube.


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Alex holds dual master's degrees in Accounting and Business Administration (MBA) in Australia. With a strong grasp of macroeconomic trends and policy fundamentals, he brings deep expertise in property investment strategy. As a seasoned investor and former General Manager of a publicly listed Australian real estate company, Alex possesses comprehensive industry insight.

Alex Shang

Alex holds dual master's degrees in Accounting and Business Administration (MBA) in Australia. With a strong grasp of macroeconomic trends and policy fundamentals, he brings deep expertise in property investment strategy. As a seasoned investor and former General Manager of a publicly listed Australian real estate company, Alex possesses comprehensive industry insight.

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