OzCalcs

All calculators

Every OzCalcs calculator in one place, grouped by what you're trying to work out. All are free, use Australian 2026–27 rates, and run in your browser.

Stamp duty by state

Each state sets its own duty rates and first home buyer concessions.

First home buyer grants by state

The first home owner grant and duty concessions where you're buying.

Land tax by state

Each state's threshold and rates for investment property.

Business

Everyday sums for sole traders and small businesses.