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SUBCLASS 600 · VISA CONDITION 8558
12 months in Australia within any rolling 18-month period.
This calculator is for subclass 600 Visitor visa holders whose visa is subject to condition 8558. The rule does not restart at each entry: add every Australian stay to identify the most heavily occupied rolling 18-month window.
Every 18-month window matters
A period can begin on any date. Looking only at the current year, visa year or most recent trip can miss an earlier overlapping window.
Travel days need a consistent method
This tool treats both arrival and departure dates as days in Australia and removes duplicate days created by overlapping entries.
Use complete movement records
Missing an older stay can change the result. Compare entries with official movement records and the visa grant notice.
Residence day calculator
Enter arrival and departure dates in chronological order.
Add every stay in Australia
Count the arrival and departure dates because presence during any part of a day may matter. Overlapping records are counted once.
How the result is produced
The tool checks overlapping calendar windows—not a fixed 548-day shortcut.
- 01
Convert every completed stay into individual presence days and count overlaps once.
- 02
Move an 18-calendar-month window one day at a time across the supplied travel history.
- 03
Compare presence in each window with the length of 12 calendar months beginning on the same date.
Legal wording
“The holder must not stay in Australia for more than 12 months in any period of 18 months.”
Condition 8558, Schedule 8 to the Migration Regulations 1994. Checked 8 August 2026.
This calculator provides a preliminary calendar-day check based only on the dates entered. It does not confirm how Home Affairs will treat incomplete, disputed or unusual movement records, and it is not migration advice or a Department decision.
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