1. What is Visa Condition 8558?

Condition 8558 is a requirement for Australian Visitor Visa (subclass 600) holders stating that the visa holder must not stay in Australia for more than 12 months in any 18-month period. This calculator helps determine compliance with this condition.

2. How Does the Calculator Work?

The calculator uses the following logic:

Where:

• \( \text{stay\_durations} \) — Array of all stay durations in Australia (in days)
• \( 18\text{-month period} \) — Rolling 548-day window (18 months × 30.44 days)
• \( 365 \text{ days} \) — Maximum allowed stay in any 18-month period

Explanation: The calculator checks all possible 18-month periods to find the maximum cumulative stay duration.

3. Importance of Compliance

Details: Compliance with condition 8558 is crucial for maintaining valid visa status. Non-compliance may result in visa cancellation, future visa refusals, or entry bans.

4. Using the Calculator

Tips: Enter all your Australia stay durations in days (e.g., "90, 30, 180"). The calculator will analyze all possible 18-month periods to determine your maximum cumulative stay.

5. Frequently Asked Questions (FAQ)

Q1: Does the 18-month period start from my first entry?
A: No, it's any rolling 18-month period. The calculator checks all possible periods.

Q2: What if I have multiple short visits?
A: The calculator sums all days within any 18-month window, regardless of visit frequency.

Q3: Does this apply to all 600 visas?
A: Only to visas with condition 8558 attached. Check your visa grant letter.

Q4: What about time spent in immigration clearance?
A: Only count full days in Australia. Departure and arrival days typically don't count as full days.

Q5: How accurate is this calculator?
A: It provides an estimate based on your input. For official determination, consult with the Department of Home Affairs.