South Australia Stamp Duty 2026-27: Uncapped New-Build Relief and What It Frees Up

For a first-home buyer in South Australia purchasing a brand-new home, off-the-plan apartment, or vacant land to build on in 2026-27, the state’s conveyance duty bill can be zero—with no upper price limit. The uncapped full stamp-duty relief, effective from 13 February 2025, removes one of the largest upfront settlement costs entirely from the loan equation, provided the property is a new build and the buyer meets the eligibility criteria. An established home, by contrast, attracts the full SA conveyance duty scale, which climbs from 1% on the first $12,000 to 5.5% on the portion above $500,000. The resulting duty on a $700,000 existing house is $32,330, a sum that must be funded at settlement and directly reduces the deposit available to meet a lender’s loan-to-value ratio. Because the relief is restricted to new homes and does not cover the 7% foreign-purchaser surcharge, a buyer’s visa status and property type become the two variables that most sharply alter the funds-to-complete figure a licensed Arrivau mortgage adviser will work into a loan quote.

What Does the SA Conveyance Duty Scale Look Like for 2026-27?

South Australia’s residential conveyance duty scale for 2026-27 remains a progressive tiered structure. The scale applies to residential and primary-production land; non-residential property has been duty-free since 2018. The brackets are:

Up to $12,000: 1.0% of the dutiable value.
$12,001 to $30,000: $120 plus 2.0% of the excess over $12,000.
$30,001 to $50,000: $480 plus 3.0% of the excess over $30,000.
$50,001 to $100,000: $1,080 plus 3.5% of the excess over $50,000.
$100,001 to $200,000: $2,830 plus 4.0% of the excess over $100,000.
$200,001 to $250,000: $6,830 plus 4.25% of the excess over $200,000.
$250,001 to $300,000: $8,955 plus 4.75% of the excess over $250,000.
$300,001 to $500,000: $11,330 plus 5.0% of the excess over $300,000.
Over $500,000: $21,330 plus 5.5% of the excess over $500,000.

A purchaser who is not a first-home buyer, or who is buying an established home, funds this duty from their own savings. On a $450,000 purchase the duty works out to $18,830; at $650,000 it reaches $29,580. When a lender calculates the loan quote, that duty sits inside the funds-to-complete line—money the borrower must prove they hold in addition to the deposit the bank requires. Because APRA’s 3.0 percentage-point serviceability buffer already constrains borrowing capacity, every dollar absorbed by stamp duty is a dollar that cannot lift the deposit or shrink the loan-to-value ratio, potentially triggering LMI or pushing the assessed DTI above a lender’s internal cap.

Who Qualifies for the Uncapped New-Build First-Home Relief?

Since 13 February 2025, South Australia has offered full conveyance duty relief for first-home buyers who purchase a new home, an off-the-plan dwelling, or vacant land on which they intend to build their first home. The relief has no price cap—a $950,000 house-and-land package in Mount Barker or a $1.2 million off-the-plan apartment in the Adelaide CBD can both qualify for a zero-duty outcome if the buyer meets the eligibility rules.

The qualifying conditions are specific. At least one buyer must be a first-home buyer who has never owned a residential property in Australia. The property must be a new home—defined as a dwelling that has not been previously occupied or sold as a place of residence—or substantially renovated, or it must be vacant land with a genuine intention to build. The buyer must move in within 12 months of settlement or completion and live there as their principal place of residence for a continuous period of at least six months. The relief is not available to trusts or companies, and it cannot be combined with an investment purpose.

From a loan-quote perspective, the uncapped nature of the relief removes the cliff-edge that exists in other states. In Victoria, for example, the first-home duty exemption phases out between $600,000 and $750,000; in NSW the full exemption cuts off at $800,000. SA’s uncapped model means a first-home buyer can target a property at any price point—provided it is new—without seeing a five- or six-figure duty line appear on their settlement statement. That keeps the funds-to-complete figure closer to the contract price plus conveyancing and lender fees, making the deposit requirement more predictable.

Why Are Established Homes Excluded, and What Does That Cost?

The SA first-home relief explicitly excludes established homes. A first-home buyer who purchases an existing house or unit—even one they intend to live in—pays the full conveyance duty scale outlined above. On a $600,000 established home in Prospect or Glenelg, the duty is $26,830. On an $800,000 established home it climbs to $37,830.

This exclusion reshapes the borrowing conversation. A buyer who could afford repayments on a $700,000 loan might find their deposit stretched by a $32,330 duty bill, pushing their LVR above 80% and requiring LMI. Alternatively, they might need to lower their purchase price to keep the deposit intact, which changes the property search and the loan size. The policy design effectively directs first-home demand toward new construction, aligning with state government supply objectives, but it also means a buyer comparing a $650,000 new townhouse with a $650,000 established cottage faces a $29,580 difference in upfront costs. A licensed Arrivau mortgage adviser will model both scenarios against the same borrowing capacity to show exactly how the duty line alters the loan-to-value ratio and the required deposit.

How Does the $15,000 FHOG Stack With the Duty Relief?

South Australia’s First Home Owner Grant offers up to $15,000 for eligible first-home buyers who purchase or build a new home. The grant is separate from the conveyance duty relief and can be received in addition to a zero-duty outcome. The FHOG is paid as a lump sum after settlement or completion, and while it is not available to offset the deposit at the point of exchange, many lenders will treat a confirmed FHOG entitlement as part of the borrower’s funds-to-complete when assessing the application.

The combined effect can be material. A first-home buyer purchasing a $550,000 new home pays zero conveyance duty and receives $15,000 from the FHOG. If the lender accepts the grant as part of the contribution, the effective deposit requirement drops by that amount, improving the LVR and potentially avoiding LMI. For a buyer using a 10% deposit, the grant can lift the equity position from $55,000 to $70,000 on paper, shifting the LVR from 90% to roughly 87%—still above the 80% threshold but reducing the LMI premium and improving the serviceability picture under APRA’s 3% buffer test.

It is worth noting that the FHOG is not automatic; the buyer must apply through RevenueSA, and the property must meet the definition of a new home. A licensed mortgage adviser can confirm whether a specific property and buyer profile qualify for both the grant and the duty relief before the loan application is lodged.

What About the 7% Foreign Purchaser Surcharge?

South Australia imposes a 7% foreign-purchaser surcharge on residential property acquisitions, and the first-home duty relief does not cover it. The surcharge applies to the dutiable value of the property and is payable in addition to any conveyance duty that would otherwise apply—or in addition to the zero-duty outcome if the buyer qualifies for the first-home relief. A foreign person buying a $600,000 new home as their first Australian property would pay $42,000 in surcharge duty even though the standard conveyance duty is fully relieved.

The definition of a foreign person for SA surcharge purposes aligns with the broad Commonwealth framework: it typically includes temporary residents, foreign citizens not ordinarily resident in Australia, and foreign corporations or trusts. New Zealand citizens holding a Special Category Visa may be exempt depending on their residency status, but this should be verified case by case. The surcharge is a state tax, not a federal one, and it is administered by RevenueSA.

For loan-quote purposes, the surcharge adds a direct and often large line to the funds-to-complete calculation. A buyer subject to the surcharge on a $750,000 new build faces $52,500 in additional upfront cost, which must be funded from savings or, where the lender permits, capitalised into the loan if the valuation supports it. Because APRA’s DTI framework caps the proportion of new lending at a debt-to-income ratio of six or above, a large surcharge can push a borrower’s total debt beyond that threshold, limiting lender options. A licensed Arrivau mortgage adviser can identify which lenders treat the surcharge most flexibly within their credit policies.

How Does SA’s First-Home Offer Compare With Other States in 2026-27?

SA’s uncapped new-build relief sits alongside several distinctive state-level policies in 2026-27. The ACT, for example, has removed the income test from its Home Buyer Concession Scheme from 1 July 2026, offering full duty exemption up to a dutiable value of $1,020,000 with a partial concession above that. For a detailed breakdown of how that changes loan quotes in the capital region, see ACT Stamp Duty 2026-27: Income Test Removed From the Home Buyer Concession.

The Northern Territory has replaced its old FHOG with a HomeGrown Territory Grant of $50,000 for first-home buyers building or buying a new home, with no price cap, and a $30,000 FreshStart grant for previous owners. That grant structure can dramatically alter the deposit arithmetic, as covered in NT Stamp Duty 2026-27: The $50,000 HomeGrown Territory Grant and Your Deposit.

Queensland also offers uncapped new-home duty relief for first-home buyers, while Victoria and NSW cap their exemptions at $600,000 and $800,000 respectively. The differences across borders mean a buyer with a fixed deposit and income profile may find their borrowing capacity stretches to a very different purchase price depending on the state. A broader comparison of how the same purchase price produces divergent settlement costs is available in Stamp Duty by State 2026-27: Same Purchase Price, Very Different Settlement Cheque.

What Does the SA Duty Structure Mean for a Loan Quote?

The loan quote for an SA purchase is built around the funds-to-complete figure: the total cash the buyer must bring to settlement after the loan proceeds are applied. That figure includes the contract price, conveyance duty (if any), the foreign surcharge (if applicable), conveyancing fees, lender fees, and any LMI premium if the LVR exceeds 80%. The SA first-home relief removes the conveyance duty line entirely for qualifying new builds, which can reduce the funds-to-complete by tens of thousands of dollars.

Consider a first-home buyer purchasing a $620,000 new home. Without relief, the duty would be $27,930. With relief, it is zero. If the buyer has saved $80,000 and the lender approves a 90% loan of $558,000, the funds-to-complete without relief would be $620,000 + $27,930 + fees, leaving a shortfall of roughly $10,000 after the deposit. With relief, the same $80,000 covers the 10% deposit and fees, and the deal proceeds without a shortfall. The FHOG of $15,000, if available, further strengthens the position.

For an established-home purchase at the same price, the $27,930 duty applies, and the buyer must either find the extra cash or reduce the purchase price. A licensed Arrivau mortgage adviser will run both scenarios through lender servicing calculators that apply the APRA 3% buffer, showing exactly how the duty line affects the maximum loan amount and the required deposit. Because the buffer means the assessment rate is roughly three percentage points above the actual loan rate, a higher duty bill that forces a higher LVR can also reduce the borrowing capacity the lender will approve, creating a compounding effect.

Data Basis, Sources and Time Boundaries

All figures in this article are drawn from the South Australian conveyance duty scale published by RevenueSA, the First Home Owner Grant conditions administered by RevenueSA, and the foreign-purchaser surcharge provisions under SA legislation, as verified against official sources as at July 2026. The APRA serviceability buffer of 3.0 percentage points and the DTI framework were confirmed by APRA statements current as at May 2026. Tax rates and thresholds referenced for comparison are from ATO publications for the 2026-27 financial year.

Policy details—including the uncapped new-build relief effective from 13 February 2025, the exclusion of established homes, and the 7% foreign surcharge—are specific to the time of writing and may be amended by future state budgets or legislative changes. Readers should treat this article as a factual snapshot of the rules as they stood in July 2026, not as a substitute for a personalised loan quote that accounts for their individual financial position, visa status, and property selection. A licensed Arrivau mortgage adviser can provide an updated quote that reflects the latest lender policies and any mid-year regulatory adjustments.

FAQ

Is the SA first-home stamp-duty relief really uncapped?

Yes. Since 13 February 2025, a first-home buyer purchasing a new home, off-the-plan dwelling, or vacant land to build on pays zero conveyance duty regardless of the purchase price, provided they meet the eligibility criteria. There is no upper price limit.

Can I get the relief on an established home?

No. The uncapped relief applies only to new homes, off-the-plan purchases, and vacant land intended for a first home. Established homes are explicitly excluded and attract the full SA conveyance duty scale.

Does the relief cover the 7% foreign-purchaser surcharge?

No. The foreign-purchaser surcharge is payable in addition to any conveyance duty or relief. A foreign person qualifying for the first-home duty relief would still pay the 7% surcharge on the dutiable value.

Can I receive both the FHOG and the duty relief?

Yes. The First Home Owner Grant of up to $15,000 is separate from the conveyance duty relief and can be received in addition to a zero-duty outcome, provided the property is a new home and the buyer meets the FHOG criteria.

How does the duty relief change my loan quote?

It removes the conveyance duty line from the funds-to-complete calculation, which can lower the required deposit, improve the LVR, and in some cases avoid LMI. A licensed Arrivau mortgage adviser can model the exact impact against your borrowing capacity and the APRA 3% serviceability buffer.

Where to Go From Here

Policy settings tell you the size of the cheque you need at settlement; they do not tell you whether the loan behind it actually works. If you want the duty, deposit, LMI and assessed repayment modelled together against your real income and commitments, a licensed Arrivau mortgage adviser can review your position and come back to you within one business day.

This article is general information only and does not constitute financial, tax or legal advice. Rates, thresholds and eligibility rules change. Confirm your own position with the ATO, the relevant state or territory Revenue Office, or a licensed adviser before acting.