Tax Depreciation Schedules: Why Commercial Property Owners Shouldn't Skip This

Tue, 04 Aug 2026 12:03:43 +1000

Tax Depreciation Schedules: Why Commercial Property Owners Shouldn't Skip This

Commercial property owners often focus on the obvious deductions — interest, rates, insurance, and maintenance — while overlooking one of the more substantial deductions available: depreciation on the building's structure and its fixtures and fittings. A properly prepared tax depreciation schedule can unlock deductions that many owners simply never claim, either because they don't realise the scale of what's available or because they assume it's not worth the effort.

What a Tax Depreciation Schedule Actually Covers

A depreciation schedule identifies and values two broad categories of deductible items in a commercial property:

Capital works deductions, covering the structural elements of the building itself — walls, roofing, and other permanent fixtures — generally deducted at a set annual rate over an extended period.
Plant and equipment deductions, covering removable or mechanical items within the property, such as air conditioning systems, carpets, blinds, and other fittings, generally depreciated over each item's specific effective life.

Both categories can represent a meaningful ongoing deduction, but they require a proper schedule to substantiate — without one, owners often either miss these deductions entirely or claim an estimate that doesn't hold up under scrutiny.

Why This Gets Overlooked So Often

Owners assume the property is "too old" to qualify. While capital works deductions depend on the property's construction date, plant and equipment items can still generate deductions even in older buildings, particularly where renovations or fit-outs have occurred.

The upfront cost of a schedule feels like an unnecessary expense. In most cases, the deductions identified substantially exceed the one-off cost of preparing the schedule, often within the first year alone.

Owners rely on their accountant to estimate depreciation without a specialist schedule. A qualified quantity surveyor's report is generally required to properly substantiate these deductions — an accountant can apply the figures, but the underlying valuation is a specialist exercise.

Renovations and fit-outs aren't captured after the fact. Improvements made by an owner or by tenants (in some circumstances) can add further depreciable value that's easy to miss if the schedule isn't updated to reflect changes to the property over time.

What to Check If You Haven't Had a Schedule Prepared

Confirm whether a depreciation schedule currently exists for the property, and if so, when it was last updated relative to any renovations, fit-outs, or improvements since.

Consider commissioning a schedule from a qualified quantity surveyor, particularly if the property was purchased, built, or significantly renovated within a period likely to generate meaningful deductions.

Review whether tenant-funded fit-outs affect the schedule, since commercial leases often involve tenant improvements that can have their own depreciation implications for either the landlord or tenant, depending on the lease terms.

Reassess after any capital improvement, since a schedule prepared years ago won't reflect subsequent renovations, upgrades, or replacements unless it's specifically updated.

Factor depreciation into overall property investment analysis, not just annual tax returns, since it directly affects the after-tax return the property is actually generating.

The Cost of Not Having One

Without a proper schedule, commercial property owners typically either underclaim available deductions significantly, or rely on rough estimates that don't hold up if reviewed. Given that depreciation can represent a substantial portion of a commercial property's overall deductions, skipping this step often means leaving a meaningful amount of legitimate tax benefit unclaimed year after year.

Is Your Commercial Property Underclaiming?

If your business owns commercial property and doesn't currently have an up-to-date depreciation schedule, it's worth finding out what's actually available to claim before another tax year goes by without it.

RBizz works with quantity surveyors to arrange depreciation schedules and ensures the resulting deductions are properly applied to your tax position — schedule a free consultation to check your property's position.

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Tax Depreciation Schedules: Why Commercial Property Owners Shouldn't Skip This