Stamp Duty Calculator South Australia — Property Tax

Stamp Duty Calculator

How Tax Calculation Works

Income tax is calculated on your total taxable income after deducting eligible exemptions and deductions from your gross income. The tax is applied progressively — you pay a lower rate on initial income slabs and higher rates only on income that exceeds each threshold. This means moving into a "higher tax bracket" does not mean your entire income is taxed at the higher rate. Understanding marginal vs effective tax rate is crucial: your marginal rate applies only to the last rupee earned, while your effective rate is the average across all slabs.

Tax-Saving Strategies

Under the old regime, maximize deductions: Section 80C allows up to Rs 1.5 lakh through PPF, ELSS, EPF, and life insurance. Section 80D covers health insurance premiums up to Rs 25,000 (Rs 50,000 for senior citizens). Section 80CCD(1B) offers an additional Rs 50,000 deduction for NPS contributions. Home loan interest up to Rs 2 lakh is deductible under Section 24. Under the new regime, the Rs 75,000 standard deduction and lower slab rates may save you more if your total deductions are below Rs 3.75 lakh. Calculate under both regimes before choosing.

How SA Stamp Duty Is Calculated in 2026 (RevenueSA Bands)

Conveyance duty in South Australia is administered by RevenueSA under the Stamp Duties Act 1923 and is charged on the higher of the purchase price or the property's market value — so a below-market transfer between family members is still assessed at full market value. The scale is progressive. As of mid-2026 the general schedule tops out at $21,330 plus $5.50 for every $100 (or part of $100) above $500,000; the band immediately below charges $11,330 plus $5.00 per $100 on the portion between $300,000 and $500,000. That produces duty of roughly $16,330 on a $400,000 purchase, $21,330 at exactly $500,000, $26,830 at $600,000 and $32,330 at $700,000. These bands are not indexed and have been stable for many years, but always confirm the current schedule on revenuesa.sa.gov.au before signing a contract. SA has no general owner-occupier rate concession on the standard scale — an investor and an owner-occupier buying the same $600,000 established house both pay $26,830. The exceptions are targeted: the first home buyer new-home exemption, and (for contracts entered on or after 25 March 2026) the Seniors Downsizing Stamp Duty Relief introduced in the 2026-27 State Budget, which gives eligible buyers aged 60+ full duty relief when they sell their principal place of residence and downsize into a new home or off-the-plan apartment valued up to $2 million (vacant land up to $1.2 million). Duty is generally payable at settlement — conveyancers lodge and pay electronically through RevenueSA's systems before the transfer can be registered with Land Services SA. Since 2018, qualifying commercial (non-residential, non-primary-production) land has been exempt from conveyance duty entirely, so this calculator applies to residential and primary production purchases.

First Home Buyer Stamp Duty Relief in SA

South Australia abolished stamp duty for eligible first home buyers purchasing new homes in the 2023-24 State Budget, and the 2024-25 Budget went further: for contracts signed on or after 6 June 2024 there is no property value cap at all on new builds — per current RevenueSA policy, an eligible first home buyer pays $0 duty on a new home whether it costs $500,000 or $900,000. "New" covers newly built houses, off-the-plan apartments, house-and-land packages and vacant land bought to build your first home. The critical catch: established (existing) homes get no first home buyer relief whatsoever in SA — you pay the full general scale, which is $26,830 on a $600,000 purchase. This makes SA unusual among Australian states. A narrow exception introduced in June 2026 provides ex gratia relief for eligible domestic-violence victim-survivors, including on established homes — check RevenueSA for the current criteria. Eligibility broadly requires that you are 18 or over, an Australian citizen or permanent resident, that neither you nor your spouse/domestic partner has previously owned and occupied residential property in Australia, and that you move in for at least six continuous months starting within 12 months of settlement. Eligible buyers of new homes can also claim the $15,000 First Home Owner Grant, whose property value cap was likewise removed from June 2024. Because these settings are budget measures rather than permanent fixtures, verify the current thresholds with RevenueSA before you commit to a contract.

Foreign Purchaser Surcharge: 7% on Top of Standard Duty

Foreign purchasers pay a surcharge of 7% of the value of their interest in residential land, on top of the general conveyance duty — a setting in place since 1 January 2018. On a $600,000 Adelaide house, a foreign buyer pays roughly $26,830 general duty plus a $42,000 surcharge: about $68,830 all up, more than 11% of the purchase price. "Foreign person" captures individuals who are neither Australian citizens nor permanent residents, plus corporations and trusts in which foreign interests hold 50% or more. The surcharge applies only to residential land — commercial and primary production purchases are not caught. Two timing rules matter: a buyer who ceases to be a foreign person within 12 months of the acquisition can apply to RevenueSA for a refund of the surcharge, while a buyer who becomes foreign within 12 months of acquiring can be assessed retrospectively. If only part of a purchase is foreign-held — say an Australian citizen and a foreign spouse buying 50/50 — the surcharge applies to the foreign share only, $21,000 in the example above. Visa-status edge cases (temporary residents, New Zealand special category visa holders) turn on individual circumstances, so foreign buyers should seek advice or a ruling from RevenueSA before contracting.

Worked Example: $600k Established Home vs $600k New Build (First Home Buyer)

Consider a first home buyer with a $600,000 budget in Adelaide. Option A: a $600,000 established house. No first home buyer relief applies to established homes in SA, so duty is the full general amount — $21,330 plus $5.50 per $100 on the $100,000 above $500,000, i.e. $21,330 + $5,500 = $26,830. No First Home Owner Grant applies either, since the grant is new-homes-only. Option B: a $600,000 house-and-land package or off-the-plan apartment. As an eligible first home buyer on a new home, duty is $0 under the current no-cap exemption, and the buyer also qualifies for the $15,000 FHOG. The gap between the two options is therefore about $41,830 — $26,830 of duty avoided plus $15,000 of grant received — before weighing construction timelines and builder risk. Even a non-first-home owner-occupier gets no discount on Option A — the seniors downsizing relief introduced in 2026 applies only to new homes, so the $26,830 stands in full on an established house. An eligible downsizer aged 60+ who sells their principal residence would, however, also pay $0 duty on Option B under the Seniors Downsizing Stamp Duty Relief, for contracts entered on or after 25 March 2026. Both buyers still pay Land Services SA registration fees, which scale with price and typically run to a few thousand dollars at this level, but those apply equally to both options. Run both scenarios through the calculator above to see exact figures for your price point.