Stamp duty calculator
Investor stamp duty by state. 2025 brackets for every Australian jurisdiction. Use as your first-pass figure, then verify with the relevant state revenue office before exchange.
Inputs
Estimate
Stamp duty (NSW)
$26,778
Effective rate
4.32%
Investor rates only — first-home concessions, off-the-plan duties, foreign-buyer surcharge and pensioner concessions not modelled. Verify with the relevant state revenue office before exchange.
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How stamp duty works in Australia
Stamp duty (also called transfer duty in some states) is a tax payable when property changes hands. Each state and territory sets its own brackets, exemptions and surcharges. Investors pay the standard rate; first-home buyers usually pay less or nothing under specific thresholds.
Investor vs first-home buyer rates
This calculator returns the investor rate because that's the relevant number for a flipper. First-home concessions, off-the-plan duties, foreign-purchaser surcharges and pensioner concessions aren't modelled. If any of those apply to your purchase, calculate via the relevant state revenue office instead.
State-by-state notes
Brackets are marginal not flat — meaning each tier of the price is taxed at that tier's rate. NT uses a non-linear formula below $525k that we approximate. ACT stamp duty is being phased down each year as part of the ACT government's revenue reform. Always verify against the state revenue office before exchange.