The ATO does not have to guess whether a landlord's rental income looks right. It has a standing, published protocol that tells it exactly what property management data to collect, from whom, and for how long — and it has been running since 2021.
What a "Data-Matching Protocol" Actually Is
Before the ATO runs any large-scale data-matching program, it publishes a protocol document. The protocol sets out the legal authority for the collection (generally a formal notice under section 353-10 of the Taxation Administration Act 1953), the objectives of the program, exactly what data will be acquired and from which providers, how long the data will be retained, and how the ATO will use it. These protocols are published on ato.gov.au and are also notified publicly through the Commonwealth Gazette, consistent with guidance from the Office of the Australian Information Commissioner (OAIC) on data-matching programs. For a broader look at how this program fits into the ATO's wider approach, see our related article on how the ATO uses third-party data.
The property management data-matching program protocol is one of several the ATO currently runs on property-related data. It sits alongside — but is separate from — the rental bond data-matching program (which draws on state and territory rental bond authorities) and the residential investment property loan data-matching program (which draws on data from banks and other lenders for the 2021–22 to 2025–26 financial years). Each has its own protocol, its own data providers, and its own scope.
Who Supplies the Data
Under this protocol, the ATO acquires data from property management software companies and their subsidiaries — the platforms that property managers and real estate agencies use to run rent rolls and trust accounts for residential rental properties. This is a different data path to the rental bond program, which comes from state and territory bond authorities, and it captures properties that are professionally managed through an agent rather than self-managed by the owner.
What the Protocol Says It Will Use the Data For
The ATO's stated objectives for the program are to:
- identify individuals and businesses who may be failing to meet their registration or lodgment obligations in relation to rental property income
- develop and refine risk models and compliance strategies for people who lease or let real property
- tailor education campaigns to help taxpayers report rental income and deductions correctly
- promote voluntary compliance and increase community confidence in the integrity of the tax and superannuation systems
In practice, this means the ATO compares the rent and expense information it receives from property management software against what individual landlords have actually declared on their tax returns for the same financial years.
If you own an investment property managed through an agent, this data has likely already been matched against your last few tax returns. A quick review now is far less costly than responding to an ATO letter later.
Book a Free Consultation →How Long the ATO Keeps the Data
The protocol specifies a retention period: the ATO keeps each financial year's data for 7 years from the date it receives the final, verified instalment of data files from all providers for that year. That means data collected for an early year in the program's scope — 2018–19, for example — remains available to the ATO's matching systems for years after that return was originally lodged.
Why This Program Matters More Than It Might Seem
Because the program covers financial years going back to 2018–19, it is not just a forward-looking check on this year's return. It gives the ATO a multi-year picture of a property's rental history, which it can use to test whether income and deductions were reported consistently year on year — including for amendments, objections, or reviews of earlier returns that are still within time limits.
The volume matters too. At roughly 2.3 million individuals' records captured annually, this is one of the ATO's largest-scale data-matching programs, and it runs alongside the rental bond and investment loan protocols rather than instead of them. A landlord's position can be checked against three separate data sources without a single audit being opened.
How Phan Campbell & Associates Can Help
At Phan Campbell & Associates in Footscray, our accounting team reviews rental income and expense reporting for property investors across Melbourne and Victoria, and checks that positions taken in earlier years would stand up against the data the ATO now holds under this protocol.
Because we are a combined legal and accounting firm, we can also advise on the property law side of an investment — from the original purchase through to any dispute with a tenant or managing agent. If you have received an ATO letter referencing rental property data, or simply want your records checked before one arrives, we can help.
If you're also weighing a property sale, our related article on GST and residential property covers the margin scheme and settlement withholding rules. For the ATO's broader land title and rental bond data sources, see our article on the ATO's property data-matching program.
Frequently Asked Questions
1. What is the property management data-matching program protocol?
It is the ATO's published protocol setting out how it collects property management data from property management software companies for the 2018-19 to 2025-26 financial years, and how that data is used to identify landlords and businesses who may not be meeting their tax obligations on rental income.
2. Whose data does the protocol cover?
It covers individuals and businesses who lease or let real property through a property manager, including landlords, and in some cases the managing agents themselves. Data is sourced from the software platforms property managers use to run their trust accounts and rent rolls, not from the managing agents directly.
3. How is this different from the rental bond data-matching program?
They are separate protocols with separate data sources. The rental bond program acquires data from state and territory rental bond authorities. The property management program acquires data from property management software companies. The ATO runs both, along with a third protocol covering residential investment property loan data from banks.
4. How long does the ATO keep this data?
The ATO retains each financial year's data for 7 years from the date it receives the final instalment of verified data files from all data providers for that year.