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Negative Gearing Calculator

Free Australia negative gearing calculator. Model rental loss as a tax-deductible adjustment against salary income.

Published

Model negative gearing tax shield.

Net after-tax cash flow

Rental loss

Tax saved

Worked example

Take an investment property that earns $30,000 of rent a year, costs $35,000 in loan interest, and another $6,000 in rates, insurance, and other deductible costs. The property runs at a $11,000 loss, since $30,000 minus $35,000 minus $6,000 is negative $11,000. For an investor on a 37 percent marginal rate, that loss is deductible against salary, saving $11,000 times 0.37, which is $4,070 in tax. The tax saving softens the blow, but the property still costs money to hold. The real out-of-pocket cash flow is the $11,000 loss plus the $4,070 saved, leaving a net cost of $6,930 for the year. Negative gearing reduces the bleed, it does not remove it.

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How it is calculated

Negative gearing happens when the deductible costs of an investment property exceed the rent it earns. The calculator first works out the rental result by subtracting interest and other costs from rent. If that result is a loss, the loss is deductible against your other income, so the tax saved is the loss multiplied by your marginal rate. The net after-tax cash flow is the loss plus the tax saved, which is the genuine amount the property costs you to hold each year. If rent exceeds costs the property is positively geared and there is no negative-gearing benefit. The strategy only pays off if long-term capital growth, later taxed at a discounted rate, outweighs the cumulative holding losses, so it is a leveraged bet on rising prices.

Frequently asked questions

Is negative gearing always good?
No, you're still losing money on the property; the tax shield just reduces the bleed. Negative gearing only pays off if the long-term capital growth exceeds cumulative losses. Combined with CGT discount, it can be tax-efficient, but it's a leveraged bet.
Which expenses are deductible under negative gearing?
The ATO allows deductions for loan interest, council rates, landlord insurance, property management fees, repairs, and depreciation on assets. Capital improvements are not immediately deductible but may be claimed over time as a capital works deduction under Division 43. Keep records for every expense because the ATO may request them during a review.
How does the 50% CGT discount interact with negative gearing?
If you hold the property for more than 12 months before selling, only 50% of the capital gain is included in your assessable income. This discount is a key reason negative gearing can be profitable overall, because losses are deducted at your full marginal rate while gains are taxed at half that rate. The strategy works best for investors in the 37% or 45% tax brackets who expect strong long-term capital growth.
What marginal tax rate should I use in this calculator?
Use the rate that applies to your highest slice of income for the 2025/26 year. The ATO rates are 0% up to $18,200, 16% from $18,201 to $45,000, 30% from $45,001 to $135,000, 37% from $135,001 to $190,000, and 45% above $190,000. The Medicare levy of 2% applies on top of these rates for most taxpayers, which is why common inputs are 32%, 39%, and 47%.

Related calculators

Sources

  1. ATO — Individual Income Tax Rates 2026-27, Australian Taxation Office
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