Sources

Every figure on this site comes straight from the government office that sets it — never copied from another calculator. If something here no longer matches its source, the source is the one to trust; please let us know and we'll put it right.

Authorities, source pages and check dates
Authority	Jurisdiction	Source page	In effect from	Last checked
ACT Revenue Office	Australian Capital Territory	https://www.revenue.act.gov.au/rates-and-property-charges/conveyance-duty-stamp-duty/conveyance-duty-for-non-commercial-property	1 July 2025	16 August 2026
Revenue NSW	New South Wales	https://www.revenue.nsw.gov.au/taxes-duties-levies-royalties/transfer-duty/understanding-transfer-duty/calculate-transfer-duty	1 July 2026	16 August 2026
RevenueSA	South Australia	https://revenuesa.sa.gov.au/stamp-duty/rate-of-stamp-duty	1 July 2018	16 August 2026
RevenueWA (Department of Treasury and Finance)	Western Australia	https://www.wa.gov.au/government/publications/duties-fact-sheet-residential-land	1 July 2022	16 August 2026
State Revenue Office Tasmania	Tasmania	https://www.sro.tas.gov.au/property-transfer-duties/rates-of-duty	21 October 2013	16 August 2026
State Revenue Office Victoria	Victoria	https://www.sro.vic.gov.au/about-us/rates-and-statistics/current-rates/land-transfer-duty-non-principal-place-residence-current-rates	1 July 2021	16 August 2026