SA Stamp Duty Calculator 2026 - FHB New Build Relief

Your purchase

Purchase price

$100k$10m

Buyer type

SA first home buyer relief (contracts from 6 June 2024) covers new homes, off-the-plan apartments and vacant land to build on - with no price cap. It does not apply to established homes, and from 13 February 2025 applicants (and partners) must never have owned Australian residential property.

Transfer duty payable - investor / owner-occupier

$29,580

Investor / owner-occupier

$29,580

First home buyer - new build

First home buyer - established

$29,580

Duty is one line of the deal. The full audit puts it alongside finance, holding costs and the tax treatment that applies after 12 May 2026.

Deal Auditor - in build, not yet available

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Calculated from the published RevenueSA scales (source). Rules and thresholds change - confirm exact figures and eligibility with the RevenueSA calculator or your conveyancer. General information only.

How SA duty works

South Australia runs one duty scale for everyone - investors, owner-occupiers and companies pay the same rates, and there is no duty-free threshold at the bottom. The scale reaches 5.5% for value above $500,000, and duty is assessed per $100 or part thereof, so the dutiable value rounds up to the next $100 before the rates apply.

The big structural break is first home buyer relief: since June 2024 it is uncapped but applies only to new homes, off-the-plan apartments and vacant land - an established first home pays full duty. That pushes the new-vs-established decision hard toward new stock for SA first home buyers, and the reform-era negative gearing rules point the same direction for investors; the Deal Auditor prices both effects in one pass.

The SA rate scale

Dutiable value	Duty
Up to $12,000	1% of the dutiable value
$12,000 - $30,000	$120 + 2% of the value over $12,000
$30,000 - $50,000	$480 + 3% of the value over $30,000
$50,000 - $100,000	$1,080 + 3.5% of the value over $50,000
$100,000 - $200,000	$2,830 + 4% of the value over $100,000
$200,000 - $250,000	$6,830 + 4.25% of the value over $200,000
$250,000 - $300,000	$8,955 + 4.75% of the value over $250,000
$300,000 - $500,000	$11,330 + 5% of the value over $300,000
Over $500,000	$21,330 + 5.5% of the value over $500,000

From the published RevenueSA scale - duty accrues per $100 or part of $100, which the calculator applies exactly.

Duty is the tax on the way in - SA also charges land tax each year you hold an investment property. The SA land tax calculator shows that annual cost and when it starts.

Frequently asked questions

How much is stamp duty in South Australia?

SA stamp duty tops out at 5.5% of the value above $500,000, on a scale with no duty-free threshold. On a $650,000 purchase the duty is $29,580 for any buyer - SA has no separate owner-occupier scale. Duty is charged per $100 or part of $100, so values round up to the next $100 first.

Do first home buyers pay stamp duty in SA?

Not on new homes - for contracts from 6 June 2024, eligible first home buyers pay zero stamp duty on a new home, off-the-plan apartment or vacant land to build on, with no price cap. Established homes receive no first-home duty relief in SA - that is the sharpest new-vs-established gap in the country.

Does SA have a foreign buyer surcharge?

Yes - foreign purchasers pay a 7% surcharge on the value of their interest in residential land, on top of standard duty. Since 13 February 2025, first home buyer relief no longer offsets the surcharge.

Are these figures official?

They are calculated from the rate scale published by RevenueSA, including the statutory rounding to each commenced $100, and cross-derived from RevenueSA's own calculator. They remain estimates - confirm the exact figure with RevenueSA or your conveyancer.