Australia's standard full-time week is 38 hours, and a permanent year is 52 paid weeks— annual leave is paid, so you don't subtract holidays. Hourly rate × 38 × 52, or salary ÷ 1,976 hours, converts between them.
The comparison goes wrong in two places. First, casual loading: casual rates carry a 25% premium in place of paid leave and security, so a $45/hr casual rate is really comparable to a $36/hr permanent rate — about $71,000, not $89,000. Second, unpaid gaps: contractors and seasonal workers should count only the weeks they actually invoice.
Watch the superwording too. Most advertised salaries exclude the 12% super guarantee; a "$100k package including super" is roughly $89,300 base. Hourly workers earn super on top of their rate the same way.
And remember tax is progressive: doubling your hours doesn't double your take-home. The calculator applies the full 2026–27 resident scale — the same engine as our salary calculator — so the after-tax hourly figure is the honest one to compare offers with.