About OzCalc

OzCalc is an independent set of Australian tax, property and superannuation calculators. Every calculator on the site publishes its formula, its current rate tables, links to the official government source those rates come from, and the date they were last checked — so you can verify the working yourself, not just take a number on trust.

Who runs OzCalc

OzCalc is operated by [operator entity name — to be filled in once the domain/ABN registration is complete]. This page will be updated with the registered business name before launch.

How the calculators are built

Every rate, threshold and bracket used on OzCalc is stored as versioned data, tagged with the government page it came from and the date it was last verified against that source — rates are never hard-coded into a calculation without that paper trail. When a rate changes (for example, at 1 July each year, or after a state budget), the underlying data updates and the affected calculator says so.

Every calculation engine is tested against worked examples published by the relevant authority — the ATO's own bracket tables, a state revenue office's own examples — before it ships. That's what "golden-vector testing" means in practice: we don't just trust the code, we check its output against numbers the government itself published.

What OzCalc is not

OzCalc gives general information and estimates only — it is not financial, tax or legal advice, and it doesn't know your personal circumstances. Every calculator says so next to its results. OzCalc doesn't sell leads, doesn't put you behind a quote wall to see a number, and doesn't promote any specific financial product.