In short
In South Australia, stamp duty on a property purchase is administered by RevenueSA, the state revenue office. Eligible first home buyers of a new home pay no stamp duty, with no value threshold, and a First Home Owner Grant of up to $15,000 is available (Government of South Australia). At the time of writing (14 October 2026) Payotte has not been able to read RevenueSA’s published rate table, so this guide does not state the general rate scale. It tells you what to ask, where to calculate your duty, and how to avoid applying a rule from another state to a South Australian purchase.
What the Government of South Australia publishes for home buyers
The South Australian Government’s home buyer site (HomeSeeker SA) states that:
- stamp duty is a government charge on certain transactions, including real estate, and it is charged either at a flat rate or at a rate that rises with the property’s price;
- eligible first home buyers pay zero stamp duty when they build or buy a new home, including an off-the-plan apartment, a house and land package, or vacant land to build a new home;
- “the property value thresholds for stamp duty relief have been removed”, so the relief applies regardless of property value;
- the relief covers new homes, not established homes (the site’s list of eligible purchases names only new-home purchases);
- the First Home Owner Grant is up to $15,000 for buying or building a new home, to be used as the principal place of residence;
- stamp duty on a house and land package is paid on the land value, and on a completed home on its full value.
The site gives no dates and no detailed eligibility criteria and refers you to RevenueSA for them: the rules in force on your contract date are what count.
Why this guide gives no rate table
Stamp duty is a state tax. Each state and territory sets its own scale, its own concessions for first home buyers and its own rules for foreign buyers. A figure from New South Wales, Victoria or Queensland does not apply in South Australia. On this site, every rate is quoted only from the revenue office that publishes it, with the date it was read. For South Australia, the official calculator and rate pages on the RevenueSA website are the reference. The federal first home page, which lists the resource for each state, points South Australian buyers to revenuesa.sa.gov.au.
What to check before you sign
Ask your conveyancer or solicitor, and confirm on the RevenueSA website, each of the following for your contract date:
- The duty on your price. Duty is calculated on a dutiable value, normally the higher of the price and the market value. Ask for the figure in writing before exchange.
- First home buyer relief. Whether the relief applies to the type of property you are buying (new home, off-the-plan, vacant land or an established home), whether there is a value cap, and the residence rule you must meet after settlement.
- Other relief. Whether any other concession applies to your situation, and the date from which it applies.
- Foreign ownership. If any buyer is a foreign person, whether a surcharge applies in addition to duty. Foreign persons must also apply for federal approval before buying residential real estate or land in Australia.
- Timing. By when the duty must be paid or the documents lodged, and what happens if they are late.
- Who claims the relief. Whether the claim must be made at settlement or can be made later, and the time limit for a refund.
How South Australia fits in the national picture
Payotte’s other duty guides show how widely the states differ: a sliding scale in New South Wales, Victoria, Queensland, Western Australia, Tasmania and the Australian Capital Territory, a formula in the Northern Territory, and different first home buyer rules in each. See:
What it costs
Stamp duty is normally the largest single purchase cost after the deposit, but the amount depends entirely on the state, the price, the type of property and your status as a buyer. The only reliable figure for South Australia is the one calculated by RevenueSA for your contract date. Use the stamp duty calculator for the states Payotte has compiled, and the South Australia page for the area context.
Which professional to consult
A conveyancer or solicitor assesses the duty on your contract, lodges it and claims any relief: see conveyancers. A mortgage broker can include duty and other costs in your funding plan: see mortgage brokers.
Frequently asked questions
Can I use the New South Wales or Victorian rates for a South Australian purchase?
No. Each state sets its own scale. Use only the South Australian figure from RevenueSA.
Where do I calculate duty for a South Australian property?
On the RevenueSA website, which publishes the rates and a calculator, or ask your conveyancer for a written assessment.
Is there first home buyer relief in South Australia?
Yes, for new homes: the state government’s home buyer site says eligible first home buyers pay zero stamp duty on a new home, off-the-plan apartment, house and land package or vacant land to build on, with the value thresholds removed. It does not cover an established home. Check the dates and conditions with RevenueSA.
Do foreign buyers pay more?
Check with RevenueSA for any state surcharge, and check the federal approval requirement for foreign persons buying residential property.
More guides on buying
- Building and pest inspection before you buy
- Buying a home in Australia: the steps, state by state
- Buying at auction in Australia: the rules by state
- Contract of sale and exchange: what you sign, by state
- Conveyance duty in the ACT and the Home Buyer Concession
- Cooling-off period when buying a home, by state
- First home buyer stamp duty concessions in each state
- First home owner grants compared across the states
- Foreign buyers and FIRB approval for a home
- Foreign purchaser surcharge duty in each state
- Land titles register and title search in Australia
- Land transfer duty in Victoria: rates and concessions
- Property transfer duty in Tasmania: rates and relief
- Settlement and electronic conveyancing in Australia
- Stamp duty in the Northern Territory: formula and discount
- Strata title and body corporate: what to check by state
- Transfer duty in NSW: 2026/27 rates and first home buyers
- Transfer duty in Queensland: rates and home concessions
- Transfer duty in Western Australia: rates and first home
Sources
- First Home Owner Grant: links to each state and territory (firsthome.gov.au) (consulted 14 October 2026)
- Foreign Investment (foreigninvestment.gov.au) (consulted 14 October 2026)
- Home buyer support (HomeSeeker SA, Government of South Australia) (consulted 14 October 2026)
- FAQs (HomeSeeker SA, Government of South Australia) (consulted 14 October 2026)