Key points
- Rates/thresholds depend on property value and buyer type.
- Concessions may apply for eligible first‑home buyers and PPR.
- Foreign purchaser surcharge may apply.
Current concessions and surcharges
- Eligible first-home buyer stamp duty relief applies to qualifying new homes, off-the-plan apartments and vacant land on which a first home will be built.
- For contracts entered into on or after 6 June 2024, no property value cap applies to the eligible first-home relief, subject to the current conditions.
- This particular first-home relief is not available for the purchase of an established home.
- RevenueSA’s foreign ownership surcharge is 7% of the relevant residential land interest, in addition to ordinary duty.
RevenueSA also has separate seniors downsizing relief. Check the current scheme and eligibility rather than relying on the standard stamp duty calculator alone.
Worked example — $450,000 property
For a dutiable value of $450,000, the property falls within the over $300,000 but not over $500,000 bracket.
- Rate formula: $11,330 + $5.00 per $100 or part of $100 over $300,000
- Amount over threshold: $450,000 − $300,000 = $150,000
- Duty on excess: $150,000 ÷ $100 × $5.00 = $7,500
- Total stamp duty: $11,330 + $7,500 = $18,830
This example uses South Australia's general conveyance duty rates only. Eligible first-home relief, foreign ownership surcharge and other relief schemes can change the final amount.
Calculate SA stamp duty
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Use our stamp duty calculator → MortgageMateAUOfficial resources
Last checked: October 2026. Stamp duty rules can change and depend on the transaction and buyer. Check RevenueSA and consider advice from a conveyancer, solicitor or other appropriately qualified professional.