Stamp Duty
South Australia
The hidden cost that catches every buyer off guard. Understand the tiered system, calculate your liability, and budget with confidence.
Stamp duty in South Australia is one of those costs that surprises buyers the first time they see it. Officially called transfer duty, it is a state government tax paid when property ownership changes hands.
Calculate Your Duty
Property Price
Duty is based on the purchase price or market value, whichever is higher.
Your Stamp Duty
Estimated Transfer Duty
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Effective Rate
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Total Cost
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The Fine Print
Not a Flat Percentage
The important thing to understand is that stamp duty is not a flat percentage. It is not simply one percent of the purchase price. Instead, South Australia uses a tiered sliding scale. The duty increases as the value of the property increases, meaning higher priced homes attract a higher overall amount of duty.
Above $500,000, the marginal rate hits 5.5% — on top of all the duty accumulated from the lower brackets.
Stamp duty is calculated based on the purchase price or the market value of the property, whichever is higher. This prevents buyers and sellers from understating the sale price to reduce tax. RevenueSA applies the duty using set brackets, and each portion of the property value is charged at a different rate.
Stamp Duty by Property Price
Total duty payable at key price points across South Australia
The Bracket System Explained
For example, the first twelve thousand dollars is charged at around one percent, but once the price moves into the hundreds of thousands, the marginal rate rises. Above five hundred thousand dollars, the rate becomes 5.5% on the amount above that threshold, in addition to a base amount already accumulated from the lower brackets.
Because of this structure, stamp duty on a typical home purchase can often amount to several percent of the total price, commonly in the range of three to five percent overall depending on the value of the property.
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Effective Rate Curve
The overall percentage of your purchase price that goes to stamp duty
Know Before You Buy
Concessions and Exemptions
There are situations where concessions or exemptions apply. Eligible first home buyers purchasing a new home may receive relief, and foreign buyers may face additional surcharges. These rules can significantly change the final amount payable.
First home buyers purchasing a new home may be eligible for a full stamp duty concession — potentially saving tens of thousands of dollars.
Marginal Rate by Bracket
Each portion of the property value is taxed at a progressively higher rate
Quick Reference
| Property Price | Stamp Duty | Eff. Rate |
|---|---|---|
| $250,000 | $9,080 | 3.63% |
| $350,000 | $14,080 | 4.02% |
| $450,000 | $19,080 | 4.24% |
| $500,000 | $21,580 | 4.32% |
| $600,000 | $26,830 | 4.47% |
| $750,000 | $35,080 | 4.68% |
| $900,000 | $43,330 | 4.81% |
| $1,000,000 | $48,830 | 4.88% |
| $1,500,000 | $76,330 | 5.09% |
Settlement Day
Budget for It Early
Stamp duty is one of the largest upfront costs in buying a home, so understanding how it works in South Australia is essential when budgeting for your purchase.
The simplest way to get an exact figure is to use the official RevenueSA stamp duty calculator, which applies the current rates automatically based on the property value — or use the calculator above.
Don't let stamp duty be the surprise that derails your property plans. Know the number before you make the offer.