Australian Taxation Office

The Australian Taxation Office (ATO) is the statutory agency responsible for administering Australia’s federal tax system. For property investors, the ATO sets and enforces the rules on rental income declaration, deductible rental expenses, capital works deductions (Division 43) and plant-and-equipment depreciation (Division 40), negative gearing, the capital gains tax discount, and the main residence exemption. It is a federal body — residential tenancy law, by contrast, is administered by each state and territory.

The ATO runs extensive data-matching programs that reconcile landlord tax returns against data from property managers, rental bond boards, sharing-economy platforms, financial institutions, and land title offices. Discrepancies between reported rental income or claimed deductions and these third-party feeds are a common trigger for review. The ATO publishes annual rental-property focus areas and issues binding and draft taxation rulings that shape what evidence a landlord must retain.

Records the ATO can ask a landlord to produce: rental income statements, lease agreements, loan statements establishing the purpose of borrowings, receipts and invoices for repairs and capital works, depreciation schedules from a qualified quantity surveyor, apportionment workings for part-year or part-private use, co-ownership splits, and settlement statements for capital gains tax calculations. The ATO generally expects records to be kept for five years from the date a return is lodged, and longer where a capital gains tax event is involved.