About AU Tax Calc
A free, privacy-first tax calculator built by Origami Studio — because checking your take-home pay shouldn't require an account, a spreadsheet, or a law degree.
ATO-aligned figures
Tax brackets, Medicare levy, HECS-HELP thresholds, super rates, and contribution caps are taken from ATO published rates and verified against the ATO website for every financial year from FY2015-16 to FY2027-28. The calculation engine is covered by 123 automated tests.
Official state data
Stamp duty scales come from each state and territory revenue office (Revenue NSW, SRO Victoria, QRO, and so on), and income percentiles come from the ATO's published Taxation Statistics. We cite the source and financial year wherever specific figures appear.
Reviewed and dated
Every guide shows its review date. When rates change — new brackets, indexed thresholds, new financial years — we update the engine and re-check the guides that cite affected numbers.
Private by design
Everything runs in your browser. No accounts, no tracking, no data collection — your salary never leaves your device. That's not a feature tier; it's the architecture.
One important caveat
Everything on this site is general information, not tax or financial advice. Calculators simplify — they can't know your full circumstances. For decisions that matter, talk to a registered tax agent or financial adviser.
Spotted a wrong number? We genuinely want to know — tell us and we'll fix it fast.