Tax depreciation is one of the simplest ways for Australian property investors to increase after-tax returns. By claiming tax deductions on the wear and tear of a property’s depreciating assets, you can reduce your taxable income and improve cash flow.
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.
Knowing how Division 40 works helps investors uncover valuable tax benefits and stay compliant with Australian Taxation Office (ATO) guidelines. This guide explains what it is, what assets qualify, and how to maximise your claim depreciation deductions.
What Is Division 40?
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, and this effective life determines eligibility and dictates how quickly its value declines and how much tax deduction you can claim each financial year.
Division 40 differs from Division 43, which covers the capital works deduction for the structural components of a building, like walls, roofs, and floors. In short, Division 40 focuses on the new assets and existing assets inside a property that wear out with use, rather than the building itself.
Understanding which depreciating assets qualify under Division 40 ensures that investors claim every deduction available and remain compliant with ATO rules and industry standards.
What Assets Are Covered Under Division 40?
The Australian Taxation Office (ATO) classifies Division 40 assets as plant and equipment items that are mechanical, easily removable, or not permanently fixed to a property. These assets depreciate faster than structural improvements and their value decreases over time through normal wear and tear.
Below are common examples of assets that qualify under Division 40, depending on property type:
Residential investment properties:
Air conditioners and air-conditioning units
Ovens, cooktops, and dishwashers
Blinds, curtains, and light fittings
Carpets and floating floorboards
Hot water systems and solar panels
Security systems and intercoms
Ceiling fans
Pool filtration or cleaning systems
Commercial and industrial properties:
Office furniture and computer equipment
Refrigeration units and commercial ovens
Lighting systems
Cash registers, printers, and security cameras
Workshop or factory equipment
Each plant and equipment asset has a specific effective life, which the ATO uses to determine different rates of depreciation for each asset, affecting how much depreciation deductions can be claimed each financial year.
Identifying every qualifying single asset within a property can significantly increase your annual tax deductions, which is why most investors rely on a qualified quantity surveyor to prepare a detailed tax depreciation schedule.
How Division 40 Depreciation Works
Once you identify which assets fall under Division 40, the next step is understanding how their depreciation deductions are calculated. The Australian Taxation Office (ATO) allows two methods for claiming depreciation deductions:
Diminishing Value Method
This method calculates depreciation using the declining balance of the asset each year, providing larger tax deductions in the early years of ownership and smaller deductions later. It reflects how assets depreciate faster initially. Investors often prefer this approach because it improves short-term cash flow.
Prime Cost Method
This approach spreads depreciation deductions evenly across the asset’s effective life. It offers more consistent annual tax deductions, making it easier to forecast tax savings over time.
The ATO assigns each plant and equipment item an effective life, which determines the rate of decline. For example, an air-conditioning unit may have an effective life of 10 years, while carpet may be set at 8 years.
Some lower-cost assets can also be grouped in a low-value pool, allowing investors to claim higher deductions faster and write off assets more efficiently.
Using the right depreciation method and asset classification ensures your claims remain accurate and compliant, while maximising your overall tax benefits.
Division 40 vs Division 43: Key Differences Explained
When claiming tax depreciation deductions, investors often confuse Division 40 and Division 43. Both allow you to claim tax deductions, but they apply to different parts of a property.
| Feature | Division 40 | Division 43 |
|---|---|---|
| Type of assets | Plant and equipment (removable or mechanical items) | Capital works (structural components and capital works allowance) |
| Examples | Carpets, air conditioners, appliances, blinds | Walls, floors, roofs, concrete driveways, and structural improvements |
| Depreciation rate | Based on the ATO’s effective life of each asset using two methods (diminishing value or prime cost) | Fixed rate, generally 2.5% per annum for 40 years on construction cost |
| Eligibility | Claimable for new assets and certain installed assets; second-hand plant and equipment not claimable if acquired with residential property after 9 May 2017 | Claimable for buildings constructed after 15 September 1987 based on construction costs |
| Ownership impact | Depreciation stops when the asset is sold or replaced | Continues while the property is income-producing |
The key takeaway is that Division 40 applies to movable plant and equipment assets that depreciate faster, while Division 43 covers the building itself and structural improvements with capital works deductions over a longer period. Both work together to help investors maximise total tax deductions and improve cash flow.
Claiming Division 40 Deductions (Process and Compliance)
Claiming depreciation deductions under Division 40 requires accurate reporting and compliance with Australian Taxation Office (ATO) guidelines. The process involves identifying eligible plant and equipment assets, calculating depreciation correctly, and maintaining detailed records.
Engage a qualified quantity surveyor to prepare a tax depreciation schedule that estimates depreciation deductions based on industry standards and effective lives.
Obtain a detailed tax depreciation schedule listing all existing assets and new assets eligible for claim depreciation deductions.
Submit claims through your accountant as part of your annual tax return for the financial year.
For residential investment properties purchased after 9 May 2017, investors cannot claim depreciation on second-hand plant and equipment that came with the property from a previous owner. However, newly installed or replaced assets remain eligible for tax deductions.
Keeping accurate records of construction costs, purchases, installation dates, and property improvements ensures your claims remain valid if reviewed by the ATO.
Maximising Your Depreciation Benefits
Maximising your Division 40 depreciation deductions starts with accurate asset identification and professional reporting. Even small items such as blinds, ceiling fans, or kitchen appliances can add up to significant tax benefits over time.
A comprehensive tax depreciation schedule prepared by a qualified quantity surveyor ensures that no asset is overlooked and every allowable tax deduction is claimed. This level of detail can make a major difference to your annual tax return and long-term investment strategy.
To further improve your results:
Keep detailed records of all renovations, construction costs, and asset purchases.
Replace worn or outdated items strategically to refresh deductions and write off assets in the same financial year.
Review your depreciation schedule after major upgrades or new installations.
Working with a tax depreciation specialist not only ensures ATO compliance but also helps you optimise your cash flow and maximise every available tax deduction from your investment property.
FAQs About Division 40
What is Division 40 depreciation?
Division 40 depreciation refers to the tax deductions you can claim on plant and equipment assets within income-producing properties. These are depreciating assets that wear out or lose value over time, such as appliances, carpets, and air conditioners.
Can I claim Division 40 on a second-hand property?
You can only claim depreciation on second-hand plant and equipment assets if the property was already being rented out before 9 May 2017. For plant and equipment assets acquired after that date, depreciation is only available on brand-new plant and equipment items, provided the tenants are the first to use them.
What is the difference between Division 40 and Division 43?
Division 40 covers removable or mechanical plant and equipment assets that depreciate faster, while Division 43 applies to the building’s structural elements like walls, floors, and roofs, depreciated through capital works allowance.
Who sets the effective life of assets?
The Australian Taxation Office (ATO) publishes effective life tables that determine the rate of depreciation for each type of asset, influencing different rates of tax deductions.
Why use a quantity surveyor?
A qualified quantity surveyor prepares a detailed tax depreciation schedule that ensures your claims are accurate, comply with ATO guidelines, and are maximised according to industry standards.
Division 40 Key Takeaways for Property Investors
Understanding Division 40 is essential for any property investor who wants to maximise tax deductions and maintain ATO compliance. By identifying all eligible plant and equipment assets, you can claim valuable depreciation deductions each financial year and improve your property’s overall return on investment.
Working with a qualified quantity surveyor ensures your tax depreciation schedule accurately lists every Division 40 and Division 43 item, helping you avoid missed opportunities and errors in your claim.
To see how much you could save, get a free quote and depreciation estimate with Thrifty Tax today. Our team prepares detailed, ATO-compliant reports designed to help you unlock every available tax deduction from your investment property.
