Property investing
Negative gearing explained, with a free negative gearing calculator
Understand negative gearing in Australia, estimate the cash-flow impact, and model the after-tax holding cost of an investment property.
9 min read · Updated 30 May 2026
Negative gearing is one of Australia's most discussed property investment strategies. It can reduce taxable income when an investment property makes a deductible loss, but it is not free money and it should never be the only reason to buy.
Key takeaways
- Negative gearing can reduce taxable income when an investment property makes a deductible loss, but the investor still funds the cash-flow gap.
- The strategy depends on asset quality, long-term growth, rental assumptions, interest rates and the investor's capacity to absorb losses.
- A calculator is useful for scenario planning, but tax advice and borrowing-capacity checks should come before relying on the strategy.
What is negative gearing?
A property is negatively geared when the deductible costs of owning it are higher than the income it produces. In simple terms, the property runs at a loss before tax.
For example, if rent is $650 per week and interest plus deductible costs are equivalent to $850 per week, the cash-flow gap is about $200 per week. Over a year, that is about $10,400. At a 37% marginal tax rate, the indicative tax benefit would be about $3,848, leaving an after-tax holding cost of about $6,552.
Why investors use negative gearing
Investors use negative gearing because it can improve after-tax cash flow while they hold an asset they expect to grow over the long term. The strategy relies on the investor being comfortable funding the gap and on the property producing enough future growth to justify that holding cost.
- Tax deductions may reduce the after-tax cost of holding an investment property.
- Leverage allows investors to control a larger asset with a smaller deposit.
- Capital growth can compound over time if the property performs well.
- Rental income can help offset repayments and ownership expenses.
Risks of negative gearing
Negative gearing magnifies the importance of cash flow. If interest rates rise, rent is lower than expected, the property sits vacant, or maintenance costs jump, the investor must still fund the shortfall.
Weak property growth can also undermine the strategy. A tax deduction does not compensate for buying the wrong asset at the wrong price or holding a property that does not suit your income, buffer, or risk tolerance.
- Rising interest rates can increase the loss.
- Vacancies reduce rental income.
- Repairs, strata levies, insurance, and land tax can surprise investors.
- Tax settings can change, so investors should get current advice.
- Capital growth is not guaranteed.
Use the negative gearing calculator
Enter the purchase assumptions below to estimate annual rent, interest cost, net property position, tax benefit, estimated refund, and after-tax holding cost. This is a simplified calculator and does not replace tax advice.
Loan amount
$640,000
Annual rental income
$33,800
Annual interest expense
$39,680
Net property position
-$14,380
Estimated tax refund
$5,321
After-tax holding cost
$9,059
Simplified estimate only. Excludes depreciation, principal repayments, purchase costs, land tax, Medicare levy effects, and individual tax advice.
When negative gearing can make sense
Negative gearing is generally most relevant to higher-income investors who can comfortably fund the cash-flow shortfall and who are buying for long-term capital growth rather than a short-term tax deduction.
It can be part of a considered investment strategy when the buyer has a strong income, emergency buffer, suitable loan structure, realistic rent assumptions, and a clear reason to believe the asset has long-term growth potential.
Common mistakes
The biggest mistake is buying purely for tax deductions. A dollar lost to get a partial tax benefit is still a loss. The property must make sense on quality, price, location, cash flow, risk, and long-term return.
Investors also commonly underestimate vacancy, repairs, insurance, strata, land tax, and the impact of unused credit limits or investment debt on future borrowing capacity.
Thinking about buying an investment property?
Check your borrowing power before you rely on a tax strategy or start bidding.
Calculate my borrowing powerFrequently asked questions
Negative gearing is when the deductible costs of an investment property are higher than its rental income, creating a loss that may reduce taxable income.
The potential tax benefit depends on the property loss and your marginal tax rate. For example, a $10,000 deductible loss at a 37% marginal tax rate gives an indicative benefit of $3,700.
It can be worthwhile for some investors, but only if the asset quality, cash flow, risk, and long-term growth outlook make sense. A tax deduction alone is not enough.
Yes, but first-time investors should be especially careful with cash-flow buffers, vacancy assumptions, maintenance costs, and the impact on future borrowing capacity.