I spend months at a time overseas — does the ATO know exactly when I come and go?

You fly out after the October long weekend and come back in February. Or the other way round — a few months here for work, the rest of the year with family overseas. It has been the shape of the year for long enough that it stopped feeling like a tax question.

It is one. Australian tax obligations turn on residency status, and residency turns partly on where you actually are. So the useful question is not whether the ATO can see your travel — it can, and has been able to for years — but what it does with it.

What was renewed last week

The ATO runs a passenger movements data-matching program with the Department of Home Affairs. Its protocol was last updated on 24 August 2026, and the accompanying gazette notice — published in the Federal Register of Legislation in the week starting 24 August 2026 — states that the ATO will acquire passenger movements data for selected taxpayers, from Home Affairs, for 2026–27 through to 2028–29.

This is a continuation, not a new idea. The ATO has been conducting the program since March 2020, and the previous protocol, published in July 2023, covered 2016–17 to 2025–26. The current one describes collection across 2019–20 to 2028–29, and estimates that records relating to approximately 115,000 individuals will be obtained each financial year.

What the ATO actually receives

The data items are listed in the notice: full name, date of birth, arrival date, departure date, passport information, and status types — visa status, residency, lawful, Australian citizen. Nothing about what you did while you were away, and nothing about money.

The source is the Movement Reconstruction database, which holds records of movements into and out of Australia since June 1981. Under the Migration Act 1958 it is a notified database: subsection 488(1) restricts access and disclosure, with a penalty of up to two years imprisonment for unauthorised access. The ATO has direct access under paragraph 488(2)(g), only prescribed employees may look and only for prescribed purposes, and access is audited. Collection is expected to occur daily through an automated system-to-system process, and each financial year's data is kept for five years from receipt of the final verified files.

The sentence most people skip

The protocol says it plainly: the data in this program is not used directly to initiate automated compliance activity, and taxpayers selected for compliance activities are identified through other methods. A long trip does not, by itself, generate a letter.

What it does do is narrower: verify identity and residency status for registration, feed the ATO's risk detection models, and act as an indicator of residency when the ATO is profiling, determining or assessing someone's residency status for tax and superannuation. It also supplements the existing visa data-matching program, by making sure the most current movement records are available at the time of assessment.

There is a process attached. Where a discrepancy needs verifying after a return is lodged, the ATO contacts the taxpayer by phone, letter or email; before any administrative action the taxpayer can check the accuracy of what is held, with 28 days to respond.

Days are evidence. They are not the test

This is where the travel record and the tax rule get confused with each other. The primary test is the resides test: if you reside in Australia you are an Australian resident for tax purposes, and no other test needs to be applied. The factors the ATO lists are physical presence, intention and purpose, family, business or employment ties, the maintenance and location of assets, and social and living arrangements. Physical presence is one of six.

If you do not satisfy that test, you are still a resident if you satisfy one of three statutory tests — domicile, 183-day, or Commonwealth superannuation. The 183-day test is the one people have heard of, and it is narrower than its reputation: you are a resident under it if you are actually present in Australia for more than half the income year, continuously or with breaks, unless it is established that your usual place of abode is outside Australia and you have no intention of taking up residence here.

One more thing worth stating because it catches people constantly: the ATO does not use the same rules as Home Affairs. You can be an Australian resident for tax purposes without being a citizen or a permanent resident, and you can hold a visa to enter Australia while not being an Australian resident for tax purposes.

Two things commonly got wrong

The first: "I was out of the country more than half the year, so I am not a resident." Falling short of 183 days does not settle it, because the domicile test is still there — your domicile is in Australia unless the ATO is satisfied your permanent place of abode is outside Australia. The ATO's own published example is a teacher who leaves for a one-year contract in Japan, lives with a family there and rents out her Australian property, and is still an Australian resident for tax purposes under that test. Days outside the country did not decide it.

The second: "I am probably not one of the 115,000, so this does not reach me." The passenger movements program is one of several. The ATO also runs a visa holder data-matching program that has been operating for more than 10 years, plus programs covering HELP, VSL and Australian Apprenticeship Support Loans — and movement data exists partly to keep those current.

This is general information current as at 29 August 2026, not advice about your own residency, which turns on facts that differ from person to person — where your home is, where your family lives, what you intend, and what the last few years actually look like.

Two practical points follow. Keep your own record of arrival and departure dates rather than reconstructing them from memory years later; the ATO's copy goes back to 1981 and yours generally does not. And if your position has been drifting — treating yourself as a foreign or temporary resident while spending substantial time here, or the reverse — settle it before a return is lodged rather than after a query arrives, because residency decides whether you declare worldwide income or only Australian-sourced income. Our earlier pieces on declaring overseas income under CRS and on selling an apartment in China cover what follows from that answer; working out where you sit is part of our individual tax return service, and the income tax calculator on this site shows what a year's income comes to at resident rates.