About OzCalculators

We are the team at OzCalculators. We build free calculators that answer everyday Australian money questions: what you take home from your pay, how much tax you pay, what a salary is worth per hour, how much stamp duty a home costs, and how much GST is in a price.

Who runs OzCalculators

OzCalculators is run by the team at OzCalculators and owned by HiveRef Pty Ltd, an Australian company that builds free online calculators. We are not part of a bank, an accounting firm or a government agency, and we do not sell financial products. Every calculation is checked against the official ATO and state revenue office figures before it goes live. To reach us, use the contact form.

Our principles

• Official numbers. Tax, Medicare, HELP and super figures come from the Australian Taxation Office. Stamp duty comes from each state and territory revenue office. Every page links to its sources.
• Clear about limits. We explain what each estimate includes and leaves out. See how we calculate.
• Private. Calculations run entirely in your browser. We never see or store the numbers you type.
• Kept current. Figures are reviewed each financial year, after state budgets, and when laws change. Last review: 2026-11-12.

The site is free to use and supported by advertising. Spotted an error? Let us know and we will fix it.