Payroll tax is a state tax that is calculated on wages paid or payable. Employers (or groups of employers) with Australian wages that exceed $950 000 are required to be registered in Western Australia. Australian wages comprise both Western Australian wages and all interstate wages.
In general any remuneration attributed to employees is included in the your total Australian wages. Common items are wages, salaries, commissions, bonuses, allowances, directors fees, fringe benefits, payments in kind, eligible termination payments and superannuation contributions.
A minimum tax rate of 5.5% applies.