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Depreciation deductions

Depreciating assets and capital expenses
You can claim a deduction for the decline in value, depreciation, of capital assets, such as buildings, motor vehicles, furniture, and machinery and equipment. Small businesses with an aggregated turnover of less than $10 million can use simplified calculation methods.
Depreciation and capital allowances tool
This tool will help you calculate the deduction available from a depreciating asset. It will also assist you to calculate the claims you are entitled to for capital allowance and capital works purposes.
Depreciation and capital expenses and allowances
Capital allowance measures contain the rules for calculating the decline in value of depreciating assets.
Effective life of an asset
To use either of the depreciation methods, you have to work out how long the asset can be used to produce income - its effective life.
General depreciation rules - capital allowances
To calculate your depreciation deduction for most assets you apply the general depreciation rules (unless you're eligible to use simplified depreciation for small business).
Simpler depreciation for small business
You can choose to use simplified depreciation rules if you are a small business entity.
Simplified depreciation - rules and calculations
The detailed rules and how to calculate depreciation under the simplified depreciation rules for small businesses – for bookkeepers, tax practitioners and others who are applying or advising on simplified depreciation.