Add income-earning and private use expenses together
This is the expense total you need to apportion.
Count the days your asset was used
These are your income-earning and private use days over the income year.
This is your total usage.
Divide your income-earning days by total usage
This is your divided amount.
Multiply the expense total by your divided amount
This is your apportioned expenses.
Add your apportioned expenses to your fully deductible expenses
This is your total deductible expenses. You can deduct these expenses from the income you earnt from the asset.