The Australian government is currently wrestling with a proposal to scrap generous tax breaks on property investment, a move that has sent ripples through London’s financial district. As the City watches closely, UK housing experts are raising red flags over a potential ‘bubble’ in our own market. Let’s cut through the noise and examine the bottom line.

Australia’s negative gearing policy allows investors to deduct losses from rental properties against their taxable income. It has long been a sacred cow, propping up property prices and fueling a housing boom. But now, the government is considering reform, fearing it exacerbates inequality and distorts the market. The debate is fierce, with property moguls warning of a crash and renters cheering for affordability.

Why does this matter for the UK? Because our own housing market shares eerie similarities. We have our own tax breaks: the mortgage interest relief for landlords, though curtailed, still exists in spirit. And we have the same phenomenon of capital flight into bricks and mortar, driving prices to absurd multiples of earnings. The Bank of England has warned that house prices are ‘stretched’ relative to fundamentals. Yet, the government continues to rely on housing as an engine of growth, fuelled by cheap credit and foreign money.

The parallels are stark. In Sydney, median house prices exceed A$1 million, akin to London’s insanity. Australia’s household debt-to-income ratio is among the highest in the world; ours is not far behind. If Australia pulls the plug on negative gearing, it could trigger a correction that ricochets across global markets. UK investors holding Australian assets would feel the heat, and the psychological impact on our own housing bulls would be significant.

But let’s be realistic: the UK Treasury is unlikely to follow suit. The political cost of tampering with the housing market is too high. The Conservative party’s base includes landlords and homeowners who view property as a pension plan. Meanwhile, Labour’s proposals for rent controls and land value taxes remain vague. So, we are left with a status quo that benefits the wealthy and punishes the young.

The real risk is complacency. As the Australian debate unfolds, the UK’s housing market continues to defy gravity, supported by ultra-low interest rates and government schemes like Help to Buy. But gilt yields have been creeping up, and inflation is stirring. The Bank of England may be forced to raise rates sooner than expected, popping the bubble. Investors should be wary: when the music stops, capital flight will hit hardest those holding leveraged property positions.

In the City, we trade on information. The Australian tax debate is a signal. It tells us that even in economies with ‘bubbly’ housing, politicians are waking up to the long-term costs. The UK would be wise to watch and learn, before our own housing market becomes a fiscal time bomb.

For now, the hedge funds are circling. They see volatility ahead. The prudent investor will diversify away from residential property and look to real assets like infrastructure or commodities. As I’ve said before, the market is efficient only if we believe in the stories we tell ourselves. Australia’s story is changing. Ours might be next.