Full calculator →
Australia · Free · 30 seconds

Are you making a
million-dollar housing mistake?

Enter your numbers. Find out whether buying a house or investing the deposit would leave you richer after 30 years.

No sign-up. No fluff. Just the maths.

$900k Sydney house · investing wins by $1.2M over 30yr $700k Brisbane house · property wins by $340k over 30yr $1.4M Melbourne house · investing wins by $2.1M over 30yr $550k Perth house · too close to call at 7% growth $650k Adelaide house · property wins by $190k over 30yr $2.1M Sydney PPOR · investing wins by $3.4M over 30yr $900k Sydney house · investing wins by $1.2M over 30yr $700k Brisbane house · property wins by $340k over 30yr $1.4M Melbourne house · investing wins by $2.1M over 30yr $550k Perth house · too close to call at 7% growth $650k Adelaide house · property wins by $190k over 30yr $2.1M Sydney PPOR · investing wins by $3.4M over 30yr

Your scenario

Adjust the sliders. Results update instantly.

Your result after 30 years

Investing the deposit
wins by $1,240,000

Renting and investing your $170,000 deposit in the ASX 200 would leave you ahead — even after accounting for rent costs, taxes, and mortgage repayments.

Property wealth

$0

Shares wealth

$0

Monthly mortgage

$0

Monthly rent cost

$0

Run the full model with CGT, state taxes & more →

Simplified model. Does not include stamp duty, maintenance, rental income, or franking credits. Full model includes all of these.

How the maths works

01

Two parallel futures

We model two identical people: one buys a house, one rents and invests the deposit. Same income, same spending — different choice.

02

Cashflow neutrality

The investor saves the difference between mortgage payments and rent each month and adds it to their portfolio. It's apples-to-apples.

03

Wealth after N years

We compare net wealth at your chosen time horizon: property equity minus remaining loan vs shares portfolio after tax. No tricks.

This calculator provides a simplified illustrative comparison only. It is not financial advice. For a complete analysis including stamp duty, land tax, depreciation, FIFO CGT, and Monte Carlo risk modelling, use the full Tepuy calculator. Always consult a licensed financial adviser before making investment decisions.
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