Negative Gearing for Doctors at 40%+ Marginal Tax Rates

General Advice Warning. This article contains general information only and does not consider your personal objectives, financial situation, or needs. It is not personal financial product, tax, credit, or legal advice. Examples and figures are illustrative only — individual outcomes vary. Before acting on any information, seek personal advice from a qualified adviser.

Negative gearing is one of the most-debated and most-misunderstood topics in Australian financial planning. For doctors above $190,000 of taxable income, it becomes mechanically different than for the average taxpayer — the ATO effectively shares 40% (or more) of every dollar of investment loss, which changes the cash flow mathematics fundamentally.

This article explains what negative gearing actually is, why it works particularly well for high-income medical professionals, how to think about its risks, and how to model the after-tax position before committing.

What negative gearing actually means

Negative gearing simply means the expenses of holding an investment exceed the income it produces. The net loss can be applied against your other taxable income, reducing your overall tax bill.

For an investment property, the calculation looks like this:

Rental income received
LESS interest on the loan
LESS property management fees
LESS council rates, water rates, insurance, body corporate
LESS repairs and maintenance
LESS depreciation (building + plant and equipment)
= Net rental position

If the result is negative, the loss reduces your taxable income. Your tax bill reduces by your marginal tax rate × the loss.

For a doctor on a 40% marginal rate, every $1,000 of investment loss reduces tax by $400. The ATO effectively absorbs 40% of the loss. You absorb the remaining 60% as a real cash outflow.

Why the maths is different at 40%+ marginal rates

For an average taxpayer on a 32.5% marginal rate, a $10,000 annual negative gearing loss reduces tax by $3,250. The taxpayer absorbs $6,750 of real cash outflow.

For a doctor on a 45% marginal rate, the same $10,000 loss reduces tax by $4,500. The doctor absorbs $5,500 of real cash outflow.

Same loss. Different after-tax cost. The doctor's after-tax cost is 18% lower than the average taxpayer's. Over a 15-year holding period, that compounding gap matters.

For doctors on the highest marginal rate of 47% (including Medicare levy):
- $10,000 pre-tax loss → $4,700 tax reduction → $5,300 actual cash outflow
- $30,000 pre-tax loss → $14,100 tax reduction → $15,900 actual cash outflow

The ATO becomes a meaningful partner in the investment.

A representative example

Consider an illustrative $850,000 investment property purchased by a doctor on a 40% marginal tax rate:

That weekly cost is $82 per week — actual cash the doctor needs to fund weekly to hold the property.

Illustrative example. Actual rental yields, expenses, depreciation schedules, and tax outcomes vary materially by property, location, and individual circumstances. Property values may rise or fall.

What you're actually buying with that $82/week

Holding the property at $82/week of net after-tax cost gives you exposure to:

1. Capital growth (if any). Property values may rise or fall — past performance is not a reliable indicator of future performance. Australian capital city property has historically appreciated over long holding periods, though with significant variation.

2. Depreciation deductions that don't represent cash outflows — depreciation is a non-cash expense reducing taxable income.

3. Leverage on the asset. An $850,000 property with $170,000 deposit means $680,000 of borrowed capital growing alongside your own equity.

4. CGT discount on eventual sale — held for 12+ months, 50% of the capital gain is exempt for individual taxpayers.

The $82/week is the cost of acquiring all of that exposure. Whether that's worthwhile depends entirely on the property, the holding period, and the alternative uses for that $82/week.

Why negative gearing works particularly well for doctors

Five reasons specific to high-income medical professionals:

1. The 40%+ marginal rate makes ATO a meaningful partner

Outlined above. The higher your marginal rate, the more the ATO shares the loss. Doctors on 47% have a more efficient negative gearing equation than doctors on 32.5%.

2. Income stability supports leverage

Lenders are willing to extend significant credit to doctors because of income predictability. The same property might require a 20% deposit from one buyer and qualify for 95% LVR for a doctor — the leverage available is materially different.

3. Cash flow can absorb the weekly cost

A specialist on $400,000 of taxable income can comfortably absorb $82/week of weekly investment cash flow. A barista on $50,000 cannot. Negative gearing requires sustained holding through the unprofitable cash flow period — high-income doctors are uniquely positioned to do this.

4. Long career runway

A 35-year-old doctor has potentially 30+ years to hold the asset, ride through market cycles, and benefit from compound capital growth. A 65-year-old has different considerations. Doctors are typically in the optimal age window for long-hold property strategies.

5. Career income trajectory pushes you into higher brackets, not lower

Negative gearing benefits accrue at your marginal rate. As a doctor's career progresses from registrar to specialist to senior consultant, the marginal rate stays high (often climbing toward 47%) rather than dropping. This is the opposite of most professions, where peak income is followed by retirement income drops.

What negative gearing is NOT

Several common misconceptions worth addressing:

It's not a guaranteed strategy. Negative gearing works mechanically through the tax system. Whether it generates wealth depends entirely on property capital growth. A property that's negatively geared AND doesn't grow in value is simply a loss-making investment.

It's not "free money." The ATO covers 40–47% of your annual loss. You still cover the rest. Over 10 years, $5,000/year of after-tax cost is $50,000 of your own money invested in maintaining the holding. The property must grow by more than that to be a positive outcome.

It's not a forever strategy. As loans amortise (interest payments reduce over time) and rental income grows (typically with inflation), the cash flow position improves. A negatively-geared property today often becomes neutrally or positively geared after 7–12 years. The strategy is acquisition-phase, not permanent.

It doesn't beat capital growth. A capital-gain-focused property in a strong location typically delivers better long-term outcomes than a yield-focused property that's neutrally geared. The tax saving from negative gearing should not be the primary driver of the investment decision.

Risks doctors should think about

Four risks worth modelling explicitly:

Interest rate risk

A 1% increase in your loan rate on a $680,000 borrowing increases annual interest by $6,800. At 40% tax saving, your after-tax cost increases by $4,080 per year. Stress-test your cash flow at higher rate environments before committing.

Vacancy risk

Two months of vacancy on a $35,000 annual rental income is $5,833 of lost income — which becomes $3,500 after-tax. Multi-month vacancies in tougher rental markets can stretch a doctor's cash flow.

Tenant damage

Insurance covers most malicious damage. Wear-and-tear and minor maintenance are not insurance items. Budget for $2,000–$5,000 per year of ongoing maintenance on top of the modelled position.

Tax law changes

Negative gearing rules have been politically debated for years. While substantive change has not occurred, the political environment can affect strategy. Major changes (e.g., limiting negative gearing to new builds) would change the calculations for existing investors.

Coordinating negative gearing with the rest of your finances

Negative gearing doesn't sit in isolation. The decision interacts with:

Owner-occupier debt. Interest on your home loan is not deductible. Investment loan interest is. Many doctors should pay down non-deductible debt aggressively before adding negatively-geared debt — or use debt recycling strategies to convert one into the other.

Super contributions. Aggressive super contributions reduce taxable income. If you contribute heavily to super, your marginal rate on remaining income may drop into a lower bracket — reducing the tax benefit of negative gearing. Coordinate the two strategies.

Insurance. Income protection should cover your ability to fund negatively-geared properties through illness or injury. Default group super income protection is typically inadequate for doctors holding multiple investment properties.

Estate planning. Negatively-geared property held in personal name passes through your estate at probate. Property held in family trust or company structure may be more efficient for inheritance — but requires structural setup early.

These interactions are why negative gearing decisions ideally happen inside a coordinated financial plan, not as standalone property purchases.

What to do next

If you're considering an investment property and want to model the actual after-tax weekly position before committing, use MNM Group's property cash flow calculator. It models the calculation above with your specific marginal rate, property type, and loan structure.

For personal advice on whether negative gearing suits your specific circumstances — and how to structure the property purchase tax-efficiently — book a free 15-minute consultation.

This article provides general information only and does not constitute personal property, tax, credit, or financial product advice. Tax outcomes depend on individual circumstances and current tax law. Property investment carries risk including loss of capital. Property values may rise or fall. Past performance is not a reliable indicator of future performance. MNM Group Financial Services Pty Ltd · ABN 52 934 978 906 · AFSL 503737.