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Ozisuma

Aussie numbers, sorted in seconds.

Stamp duty, super, HECS, take-home pay — Australian state-by-state calculators with the actual formulas, current to the latest financial year.

Every figure is sourced. Rates and thresholds come only from official .gov.au sources and are re-checked by the editorial desk under a published methodology.

Browse by category

Property

21

State-by-state stamp duty, transfer duty and property cost calculators.

Mortgage & finance

14

Mortgages, repayments, refinancing and household budgeting in AUD.

Tax & duty

18

Income tax, GST, working holiday tax and HECS-HELP repayments for the current financial year.

Everyday life

2

Electricity, fuel, rent and the everyday costs of living in Australia.

Family

5

Childcare subsidy, school fees and family budgeting tools.

Calculators that go beyond the headline number.

Big bank tools and ATO estimators give you the headline figure. Ozisuma handles the state splits, the first-home concessions, the foreign-purchaser surcharges and the off-the-plan rules — with the source rate cards quoted on every page.