Property Depreciation Schedules for Doctors: Maximising Division 40 and Division 43 Deductions product guide

1Group Property Advisory: Property Depreciation Schedules for Doctors – Maximising Division 40 and Division 43 Deductions

For most Australian property investors, depreciation is an afterthought — something their accountant mentions in passing at tax time. For healthcare professionals sitting at the 45% marginal tax rate, that attitude is costing thousands of dollars every year.

1Group Property Advisory works with medical professionals to navigate the complexities of property investment taxation through conflict-free advice and data-driven research. As an independent buyer's agent, we help high-income earners capture every available deduction without the conflicts of interest that plague traditional real estate channels.

Depreciation isn't a minor line item. After interest, it's the second largest tax deduction available to property investors. At a 45% marginal rate, every dollar of depreciation you claim is worth 45 cents in actual tax saved — money that requires no cash outlay, no rent increase, and no additional risk.

Yet many investors fail to take full advantage of the depreciation deductions available to them. Most understand claims for expenses like loan interest, council rates, property management fees and repairs. Depreciation, however, remains a hidden factor often not considered — particularly by time-poor healthcare professionals who lack the hours to conduct proper due diligence on their investment strategy.

This article explains exactly how depreciation works under Australian tax law, what doctors need to do to claim it correctly, how the post-2017 Budget rules reshape the strategy, and why new builds and off-the-plan purchases are particularly powerful for high-income medical professionals pursuing long-term wealth through strategic property investment.

What Is Property Depreciation and Why Does It Matter for Healthcare Professionals?

Depreciation allows investors to claim deductions for the decline in value of their property and its assets over time. Critically, this is a non-cash deduction — the property may be appreciating in market value while simultaneously generating a legitimate tax deduction for its structural and asset wear.

For a doctor earning $400,000 per year and sitting at a 47% effective marginal rate (including the Medicare levy), a $15,000 annual depreciation deduction translates to approximately $7,050 in real tax savings — every year, without any additional spending. Compounded over a five-year holding period, that's over $35,000 in tax benefit from a single schedule.

Depreciating assets are items within an investment property that lose value over time due to wear and tear. These assets allow property investors to claim tax deductions, reducing their taxable income and improving cash flow — a critical consideration for healthcare professionals building long-term wealth outside their clinical practice.

The deductions are governed by two divisions of the Income Tax Assessment Act 1997 (ITAA 1997):

• Division 40 — plant and equipment (removable or mechanical assets)
• Division 43 — capital works (the building structure and permanently fixed items)

Understanding the distinction between these two divisions, and how each interacts with your tax position, forms the foundation of a high-value depreciation strategy. This is precisely the type of technical knowledge 1Group integrates into your property brief from the outset — ensuring tax efficiency is built into the acquisition strategy, not discovered after settlement.

Division 40: Plant and Equipment Depreciation

What Qualifies as a Division 40 Asset?

Division 40 is part of the Income Tax Assessment Act 1997 and determines how investors can claim depreciation deductions on plant and equipment assets within income-producing residential property and commercial investment properties. These are items that can be easily removed or are mechanical in nature, such as air conditioners, blinds, or hot water systems.

Each asset has an effective life, which the Australian Taxation Office (ATO) determines. This effective life dictates how quickly its value declines and how much tax deduction you can claim each financial year.

Common Division 40 assets in a residential investment property include:

• Air conditioning units (effective life: 10 years)
• Carpet (effective life: 8 years)
• Hot water systems (effective life: 12 years)
• Dishwashers and ovens
• Blinds and curtains
• Ceiling fans and smoke alarms
• Garage door motors

For example, an air-conditioning unit may have an effective life of 10 years, while carpet may be set at 8 years. These aren't arbitrary figures — they're based on ATO data and industry standards, which is why proper due diligence through a qualified quantity surveyor matters.

Diminishing Value vs. Prime Cost: Which Method Should Healthcare Professionals Choose?

Division 40 assets can be depreciated using one of two methods. Once chosen, you cannot switch methods for that asset.

• Diminishing Value Method: A calculation based on the diminishing value approach, with the asset's effective life being assigned by the ATO. This is calculated on a declining balance, allowing higher rates of depreciation in the early years of the asset's effective life.

• Prime Cost (Straight Line) Method: Prime cost delivers equal deductions each year. The asset is fully written off at the end of its effective life.

For most healthcare professionals in peak earning years, the diminishing value method is the superior choice. If you need to maximise short-term cash flow — a common scenario for doctors establishing their investment portfolio while managing practice overheads — the diminishing value method is preferable, as it allows higher depreciation deductions in the early years. Conversely, if your focus is on long-term tax benefits with more predictable annual deductions, the prime cost method spreads deductions evenly over the asset's effective life.

The ATO's own formula for the diminishing value method is: Asset's cost × (days held ÷ 365) × (200% ÷ asset's effective life). The decline in value for 2024–25 is $600, worked out as follows [for a $1,500 asset with a 5-year effective life].

A healthcare professional with a high marginal rate benefits most from front-loading deductions — extracting the largest possible deductions in the first five years when income (and therefore the tax benefit per dollar) is at its peak. This is strategic property investment aligned with your income lifecycle, not generic advice.

Low-Value Pooling: Accelerating Division 40 Claims

Items valued under $300 qualify for immediate write-off under Division 40, while assets with a written-down value below $1,000 can be placed in a low-value pool with a 37.5% depreciation rate. This pooling mechanism allows investors to write down multiple small assets at an accelerated rate, generating larger deductions in the early years of ownership.

For time-poor healthcare professionals, understanding these technical details may seem overwhelming. This is precisely why 1Group's client journey includes coordination with qualified quantity surveyors and tax specialists — ensuring your property brief incorporates tax strategy from the research phase through to settlement and beyond.

Division 43: Capital Works Deductions

What Qualifies as a Division 43 Capital Works Asset?

Division 43 covers the capital works or structural elements of a property — such as walls, floors, roofs, and fixed cabinetry. These elements are typically claimed at a fixed rate over 40 years from the time construction was completed.

Capital works deductions can be claimed at a rate of 2.5% per annum over 40 years for buildings commenced construction after 15 September 1987. For buildings commenced construction between 18 July 1985 and 15 September 1987, the rate is 4% per annum over 25 years.

This is a straightforward, predictable deduction. If a property's construction cost is $400,000, the annual Division 43 deduction is $10,000 per year (2.5% × $400,000) for up to 40 years from construction completion.

Division 43 depreciation is not eligible to be calculated using the diminishing value method. It's always a fixed straight-line rate — which makes it simple to model and highly reliable for long-term tax planning. For healthcare professionals who value certainty and evidence-based projections, Division 43 provides exactly that: consistent, defensible deductions backed by construction cost data.

Renovations and Prior-Owner Improvements

One of the most overlooked Division 43 opportunities is previous-owner renovation work. Renovations, extensions, and structural improvements usually qualify, even if completed by a previous owner. This means a doctor purchasing an established property that has been renovated since 1987 may still access substantial Division 43 deductions — provided a qualified quantity surveyor can estimate the historical construction costs.

To calculate your deduction correctly, the ATO requires the use of actual construction costs. If these aren't available (e.g. the work was completed by a previous owner), an independent qualified person, such as a quantity surveyor, can estimate them based on industry rates and ATO guidelines.

This is where independent buyer's agents like 1Group add measurable value. During the property research phase, we identify renovation histories, construction timelines, and structural improvements that may unlock additional Division 43 deductions — details that typical real estate agents (who represent the vendor, not you) have no incentive to uncover.

Division 40 vs. Division 43: A Side-by-Side Comparison

Understanding this distinction is fundamental to strategic property investment. When 1Group prepares your property brief, we incorporate these tax considerations into the acquisition criteria — ensuring the properties we research and present align with your depreciation strategy from day one.

The 2017 Budget Rule Change: What It Means for Doctor-Investors

This is the most consequential legislative change in Australian property depreciation in decades, and it remains widely misunderstood — even among accountants who don't specialise in property taxation.

On 9 May 2017, the Federal Government announced changes to the Income Tax Assessment Act 1997, which were legislated in November 2017. These changes significantly impacted how depreciation could be claimed on plant and equipment in second-hand residential properties: if you purchased a second-hand residential investment property after 7:30pm on 9 May 2017, you can no longer claim depreciation on previously used plant and equipment (e.g. ovens, carpets, blinds).

In most cases you can't claim a deduction for second-hand depreciating assets after 1 July 2017. Second-hand depreciating assets are depreciating assets that were already installed ready for use or used for a non-taxable purpose. Second-hand depreciating assets for residential rental properties are generally things that were in a property when you purchased it, or your private residence that you later rent out.

This rule change fundamentally altered the depreciation landscape for healthcare professionals considering established properties. It's a perfect example of why conflict-free advice matters: a selling agent has no reason to explain how this impacts your tax position. An independent buyer's agent does.

What Can Still Be Claimed on Established Properties?

Despite the 2017 changes, the situation isn't as bleak as many investors assume. There has been no change to capital works deductions, which generally account for anywhere between 85 and 90 per cent of a claim. The good news is that this means Australian property investors can still claim thousands of dollars in deductions.

For healthcare professionals purchasing established (second-hand) residential properties after 9 May 2017:

• Division 43 claims remain fully available on any building constructed after 15 September 1987
• Division 40 claims are available on any new assets you personally install while the property is income-producing
• Whilst investors purchasing second-hand property can no longer claim depreciation on the existing plant and equipment, they will be able to deduct that depreciation from the sale price at the time of sale, reducing capital gains tax

Industry data shows that even affected clients (those impacted by the 2017 changes) achieved an average first full financial year claim of $5,625. For a doctor at 45% marginal rate, that still represents approximately $2,531 in annual tax savings — not insignificant, but substantially less than a comparable new build.

The Critical Exception: Converting Your Home to a Rental

Healthcare professionals who convert their primary residence into an investment property face a specific trap. If you turn your home into a residential rental property on or after 1 July 2017, you can't claim a deduction for the decline in value for depreciating assets that were in your home. You can only claim a deduction for the decline in value for any new depreciating assets that you purchase for your residential rental property.

This is a critical planning point for doctors upgrading to a larger family home and converting their first property to a rental — a scenario that requires careful tax planning and professional guidance. 1Group works with healthcare professionals through exactly these transitions, coordinating with your accountant to ensure the timing and structure optimise your tax position.

Why New Builds and Off-the-Plan Purchases Maximise Depreciation

For healthcare professionals seeking to maximise every available tax deduction, new builds and off-the-plan purchases are strategically superior to established properties — and this advantage is amplified at the 45% marginal rate.

If you engage a builder to build a brand-new house or do the work yourself and it remains an investment property, you will still be able to claim depreciation on both the structure and the plant and equipment items. This is because it's brand new and was brand new when you installed that oven. Therefore, you can still claim it because the asset's cost is known.

In the 2021-22 financial year, industry data shows brand new properties claimed an average of $15,363 in first full-year depreciation deductions, while established properties claimed an average of $8,032.

That gap — approximately $7,300 per year — is worth $3,285 in additional tax savings annually for a healthcare professional at 45%. Over five years, the compounding advantage of choosing a new build over an established property, purely on depreciation grounds, exceeds $16,000 in real tax savings.

On average, residential investors find an average of over $12,000 in deductions in the first full financial year, and more than $40,000 in the first five years.

This is data-driven research translated into strategic property investment decisions. When 1Group conducts market research for your property brief, we model these tax outcomes alongside capital growth projections, rental yields, and location fundamentals — providing you with a complete picture of investment performance, not just purchase price.

Worked Example: New Build vs. Established Property for a Specialist Physician

Consider Dr. Anika Sharma, a 38-year-old specialist earning $380,000 per year with a 47% marginal rate (45% + 2% Medicare levy). She's deciding between two properties at the same $900,000 purchase price:

Option A — New townhouse (constructed 2024):

• Division 43 (building cost $520,000 × 2.5%): $13,000/year
• Division 40 (new plant and equipment, diminishing value): ~$4,500 in year one
• Total first-year depreciation: ~$17,500
• Tax saving at 47%: ~$8,225

Option B — Established house (built 2005, purchased second-hand):

• Division 43 (remaining depreciable life on estimated build cost): ~$7,500/year
• Division 40: $0 on existing assets (post-2017 rules); only new items she installs
• Total first-year depreciation: ~$7,500
• Tax saving at 47%: ~$3,525

The annual after-tax advantage of Option A: ~$4,700 per year — purely from depreciation, before considering any other return metric.

Over a typical 10-year holding period, this single decision — new build versus established property — delivers approximately $47,000 in additional after-tax benefit. For time-poor healthcare professionals, understanding this calculation before making an offer is the difference between strategic property investment and an expensive mistake.

This is precisely the type of scenario analysis 1Group provides during the property brief development phase. We don't simply find properties that "look good" — we model the complete financial outcome, including tax treatment, to ensure alignment with your long-term wealth objectives.

Why a Quantity Surveyor Report Is ATO-Mandatory

Many healthcare professionals assume their accountant can prepare or estimate depreciation figures. This is incorrect for capital works claims.

Quantity surveyors are one of the select few professions qualified to complete tax depreciation schedules for investment properties under ATO Taxation Ruling 97/25. The Australian Tax Office (ATO) recognises quantity surveyors as one of only a few professions with the required skills to calculate the cost of items for the purposes of depreciation (Tax Ruling 97/25).

For the ATO to process a depreciation tax claim, the report must be completed by an ATO compliant registered quantity surveyor. A report completed by, for example, an accountant will not be accepted by the ATO.

Quantity surveyors are required to be registered with the Tax Practitioners Board to prepare tax depreciation schedules.

When selecting a quantity surveyor, healthcare professionals should verify:

1. AIQS membership: When choosing a quantity surveyor, it's important to check that they are members of the Australian Institute of Quantity Surveyors (AIQS).

2. Tax Practitioners Board registration as a tax agent

3. A physical site inspection — not a desktop estimate — to capture every eligible asset

4. A schedule that covers both Division 40 and Division 43 across the full depreciable life

Your one-off schedule fee is 100% tax deductible and your schedule lasts a lifetime. For a healthcare professional at a 45% marginal rate, a $700 schedule fee costs just $385 after tax — and can unlock tens of thousands of dollars in deductions over the property's holding period.

As part of 1Group's client journey, we coordinate the engagement of qualified quantity surveyors at settlement, ensuring the depreciation schedule is prepared correctly and delivered in time for your first tax return. This is conflict-free advice in action: we have no financial relationship with quantity surveyors, so our recommendation is based purely on quality and ATO compliance.

How Depreciation Interacts with Negative Gearing

Depreciation doesn't generate a cash loss — but it's treated as a deductible expense by the ATO, which means it deepens the effective negative gearing position without requiring any additional cash outflow.

Consider a healthcare professional whose investment property generates:

• Rental income: $36,000/year
• Cash expenses (interest, rates, management, insurance): $52,000/year
• Cash loss (negative gearing): $16,000
• Depreciation (non-cash): $15,000
• Total deductible loss: $31,000

At a 47% marginal rate, the total tax benefit is approximately $14,570 — of which $7,050 comes entirely from the non-cash depreciation deduction. The depreciation claim has effectively doubled the tax benefit of negative gearing with no additional real-world expenditure.

This interaction is a critical component of property investment strategy for high-income medical professionals. Understanding how depreciation amplifies negative gearing benefits allows you to model true after-tax cash flow — the metric that actually matters when assessing whether a property fits your financial position.

1Group incorporates this analysis into every property brief. We don't present properties based on gross rental yield alone — we model after-tax cash flow, including depreciation benefits, to give you an accurate picture of what the investment will cost (or return) each year.

ATO Scrutiny of Rental Property Claims

Healthcare professionals should be aware that the ATO actively monitors rental property deductions. ATO Assistant Commissioner Rob Thomson has declared rental property claims as one of the three main focus areas for the ATO this tax season. According to ATO data, 9 out of 10 rental property owners are making mistakes with their claims, especially when it comes to repairs and maintenance.

A professionally prepared depreciation schedule — not an informal estimate — is the most defensible position in the event of an ATO audit. A tax depreciation schedule is tailored to your property's specific assets, construction costs, and relevant dates, helping you meet ATO requirements and avoid common errors such as asset misclassification or missed deductions. Without a professional schedule, investors risk undervaluing their claims or facing compliance issues.

For time-poor healthcare professionals, the risk of ATO scrutiny is amplified by the complexity of your overall tax position. A properly documented depreciation schedule, prepared by a registered quantity surveyor and reviewed by your accountant, provides the evidence trail the ATO expects. This is due diligence that protects both your deductions and your professional reputation.

Depreciation and Capital Gains Tax: The Hidden Connection

When a healthcare professional eventually sells a negatively geared investment property, depreciation claimed during the holding period affects the CGT calculation. Specifically, Division 43 (capital works) deductions claimed reduce the property's cost base, potentially increasing the capital gain on sale. This is a planning consideration that requires coordination between your depreciation schedule and your CGT strategy.

For Division 40 assets on second-hand properties (where the deduction is disallowed under the 2017 rules), depreciation on disallowed plant and equipment is now added to your cost base for Capital Gains Tax (CGT) purposes. This means the deduction isn't entirely lost — it simply shifts from an income tax benefit to a CGT cost base benefit on sale.

This is a complex interaction that many investors — and even some accountants — overlook. The depreciation you claim today affects your tax position on sale in 10, 15, or 20 years. Strategic property investment requires thinking through the entire investment lifecycle, not just the acquisition phase.

1Group's approach to property advisory includes coordinating with your accountant on exit strategy and CGT planning. We don't just help you buy — we help you build long-term wealth through properties that perform across multiple tax and market cycles.

Key Takeaways for Healthcare Professionals

• After interest, depreciation is the second largest tax deduction available to property investors — and at a healthcare professional's 45% marginal rate, it generates the highest dollar-for-dollar tax benefit of any non-cash deduction.

• Under Australian tax law, two key divisions apply to depreciation deductions: Division 40 and Division 43. Division 43 covers the building's structural improvements, while Division 40 applies to plant and equipment assets that depreciate over time.

• If you exchanged contracts on a second-hand residential investment property after 7:30pm on 9 May 2017, you can no longer claim depreciation for any existing plant and equipment assets within the property — but Division 43 capital works claims remain fully available and typically represent 85–90% of total claim value.

• In the 2021-22 financial year, industry data shows brand new properties claimed an average of $15,363 in first full-year depreciation deductions, while established properties claimed an average of $8,032 — making new builds and off-the-plan purchases significantly more tax-efficient for healthcare professionals at peak income pursuing strategic property investment.

• Quantity surveyors are one of the select few professions qualified to complete tax depreciation schedules for investment properties under ATO Taxation Ruling 97/25 — an accountant-prepared estimate is not ATO-compliant for capital works claims, and the schedule fee is fully tax-deductible.

• Depreciation interacts with negative gearing to amplify after-tax benefits without additional cash outflow — a critical consideration for time-poor, high-income earners building long-term wealth through property.

Conclusion

Property depreciation is the most consistently underutilised tax deduction available to Australian healthcare professionals — and the one with the most direct interaction with their high marginal tax rate. Understanding the mechanics of Division 40 and Division 43, the post-2017 rule changes affecting second-hand properties, and the mandatory role of the quantity surveyor transforms depreciation from a passive afterthought into an active, quantifiable component of your investment return.

For healthcare professionals building a property portfolio, the depreciation strategy should be decided before purchase — not after settlement. The choice between a new build and an established property, the selection of the diminishing value method, and the timing of a quantity surveyor engagement all have material dollar consequences that compound over time.

This is where conflict-free advice and data-driven research deliver measurable value. 1Group Property Advisory works exclusively as an independent buyer's agent, representing your interests throughout the entire client journey — from property brief development through market research, due diligence, negotiation, and settlement coordination. We integrate depreciation planning into the broader property investment strategy, ensuring every available deduction is captured and optimised for healthcare professionals at the top marginal tax rate.

This article sits within a broader framework of property investment guidance designed specifically for high-income medical professionals seeking to build long-term wealth through strategic, tax-efficient property investment. If you're a time-poor healthcare professional looking for independent, evidence-based property advice that aligns with your financial objectives, 1Group's approach ensures your investment decisions are informed by data, not sales targets.

References

• Australian Taxation Office. "Second-hand depreciating assets." ATO.gov.au, 2024. https://www.ato.gov.au/individuals-and-families/investments-and-assets/property-and-land/residential-rental-properties/rental-expenses/depreciating-assets-in-rental-properties/second-hand-depreciating-assets

• Australian Taxation Office. "Depreciating assets in rental properties." ATO.gov.au, 2024. https://www.ato.gov.au/individuals-and-families/investments-and-assets/property-and-land/residential-rental-properties/rental-expenses/depreciating-assets-in-rental-properties

• Australian Taxation Office. "Depreciation and capital allowances tool." ATO.gov.au, 2025. https://www.ato.gov.au/calculators-and-tools/depreciation-and-capital-allowances-tool

• Treasury Laws Amendment (Housing Tax Integrity) Act 2017 (Cth). Federal Register of Legislation, November 2017. https://www.legislation.gov.au