Commercial Property Depreciation Australia: How Much Can Investors Claim?
- Jun 26
- 5 min read
Most articles about property depreciation focus on residential investors and in the process they overlook one of the most generous deductions in the Australian tax system. Commercial property depreciation is often larger, broader and less restricted than its residential counterpart, yet many commercial owners and tenants don't claim everything they're entitled to.
Whether you own a warehouse, an office suite, a retail shop, or you're a tenant who has fitted out leased premises, depreciation can return thousands of dollars a year. This guide explains how commercial property depreciation works, why it's often better than residential, and how to make sure you're claiming the full amount.
How does commercial property depreciation work?
Commercial property depreciation lets owners and tenants claim the declining value of a building and its assets as a tax deduction. As with residential property, claims fall under two categories: Division 43 capital works (the building structure) and Division 40 plant and equipment (removable and mechanical assets). The key advantage is that commercial property is not subject to the second-hand plant and equipment restrictions that limit residential investors, so buyers of established commercial premises can often still depreciate the existing fit-out and tenants can claim the fit-out they install. A quantity surveyor's depreciation schedule quantifies the exact deductions.
In short: same two divisions as residential, but commercial owners and tenants usually get a broader, more valuable claim.
The two divisions, applied to commercial property
Division 43 - Capital works (the structure). This covers the building shell and permanent fixtures: walls, floors, roofing, doors, mezzanines and built-in structures. For eligible commercial buildings, capital works are generally deductible at 2.5% per year over 40 years and for certain building types and construction periods, a higher rate of 4% over 25 years can apply. Because commercial buildings are expensive to construct, this deduction alone is often substantial.
Division 40 - Plant and equipment (the assets). Commercial premises are typically packed with depreciable assets: air conditioning and HVAC systems, lifts, security and access systems, commercial-grade carpet and flooring, lighting, hot water systems, fire control equipment, signage and more. Each depreciates over its own effective life, and many commercial assets are high-value, delivering strong early-year deductions.
Commercial vs residential depreciation at a glance
Feature | Residential | Commercial |
|---|---|---|
Division 43 capital works | Yes (typically 2.5% / 40 yrs) | Yes (2.5% / 40 yrs, sometimes 4% / 25 yrs) |
Division 40 plant & equipment | Restricted on second-hand assets (post-May 2017) | Generally not restricted |
Buying established premises | Limited plant & equipment claim | Often full claim available |
Tenant fit-out | Limited relevance | Tenants can claim their own fit-out |
Typical claim size | Moderate | Often larger and broader |
The big advantage: no second-hand asset restrictions
In 2017, the government limited residential investors' ability to claim depreciation on previously used plant and equipment when buying established homes. That change does not apply to commercial property used in carrying on a business.
The practical effect is significant. If you buy an established office building or retail premises, you can generally still depreciate the existing air conditioning, lifts, lighting and other plant and equipment something a residential investor buying an established home usually cannot do. This single difference often makes commercial depreciation claims materially larger than residential ones for comparable purchase prices.
Tenants can claim too: depreciating your fit-out
A point many business owners miss: if you lease commercial premises and pay for the fit-out partitions, shelving, counters, air conditioning, signage, flooring those assets you install are generally depreciable by you, the tenant, even though you don't own the building.
For a growing business that has invested heavily in fitting out a new shop, café or office, a depreciation schedule on the fit-out can recover a meaningful slice of that spend through tax deductions over the following years. It's one of the most overlooked deductions in small business.
A realistic worked example
Consider an investor who buys an established small office building in Melbourne for $1.2 million. Because commercial property isn't subject to the second-hand restrictions, both the building structure and the existing plant and equipment qualify.
A quantity surveyor inspects the premises and prepares a schedule. The Division 43 capital works deduction on the building runs for decades and, given commercial construction costs, contributes a solid annual figure. The Division 40 plant and equipment air conditioning, lifts, lighting, security and fit-out adds further deductions weighted to the early years. Combined, the first full year's deduction can comfortably reach into the tens of thousands of dollars for a building of this scale, directly reducing the owner's taxable income.
What a commercial depreciation schedule includes
A commercial tax depreciation schedule, prepared by a qualified quantity surveyor, sets out every depreciable element of the property and the deduction available each year usually across 40 years. It typically provides both the diminishing value and prime cost methods, a clear Division 43 / Division 40 split, and a year-by-year breakdown your accountant can drop straight into the tax return.
A site inspection is particularly important for commercial property, because the range and value of plant and equipment is so much greater than in a typical home and missing assets means missing deductions. The schedule is a one-off, tax-deductible cost that keeps working for the life of your ownership or lease.
Who should get a commercial depreciation schedule?
You should consider a schedule if you:
Own any income-producing commercial property - office, retail, industrial, warehouse or mixed-use.
Have bought established commercial premises, where the second-hand advantage really pays off.
Are a tenant who has paid for a fit-out of leased premises.
Have renovated or extended a commercial property, including capital improvements made by previous owners.
Have never had a schedule prepared you may be able to amend prior returns to claim missed deductions, subject to ATO time limits.
If your commercial property is generating income and you don't have a schedule, there's a strong chance you're leaving deductions unclaimed.
A note on capital gains tax
As with residential property, capital works deductions claimed over time can reduce the property's cost base, which may affect the capital gain on sale. For most commercial investors the annual cash-flow benefit outweighs this, but it's a genuine planning point worth discussing with your accountant and another reason to keep your depreciation schedule and valuation records together.
Frequently asked questions
Is commercial property depreciation better than residential?
Often, yes. Commercial property isn't subject to the second-hand plant and equipment restrictions, so buyers of established commercial premises can usually claim more, and tenants can depreciate their own fit-out.
Can a tenant claim depreciation on a commercial fit-out?
Generally yes. Assets a tenant installs and pays for in leased premises are typically depreciable by the tenant over their effective lives.
What rate applies to commercial capital works?
Most commercial buildings are deductible at 2.5% per year over 40 years, but certain building types and construction periods qualify for 4% per year over 25 years. A quantity surveyor will confirm the correct rate.
Do I need a quantity surveyor for a commercial schedule?
For most properties, yes. The ATO recognises quantity surveyors as appropriately qualified to estimate construction costs, which is essential for capital works claims and commercial properties have far more plant and equipment to assess accurately.
Can I backdate missed commercial depreciation?
Often you can amend previous tax returns to claim deductions you missed, subject to ATO amendment time limits. Confirm with your accountant.
Claim everything your commercial property is entitled to
Commercial property is one of the most depreciation-rich assets you can own and the rules are more generous than most investors realise. A professional, ATO-compliant schedule prepared by a qualified quantity surveyor ensures you capture the full deduction, whether you own the building or have fitted out leased premises.
Explore our tax depreciation reports and quantity surveyor reports, or book in a report to find out exactly how much your commercial property could be claiming.
This article is general information only and does not constitute taxation or financial advice. Depreciation rules are complex and depend on your circumstances consult your accountant or registered tax agent, and engage a qualified quantity surveyor for a property-specific schedule.
