How to Stack SA First Home Incentives: FHOG, Stamp Duty, HomeStart, and the Federal Scheme
No single South Australian government website models how the state's four main first home buyer incentives interact. RevenueSA covers stamp duty and the FHOG; HomeStart Finance describes its own loan products; Housing Australia explains the federal First Home Guarantee. Each portal describes itself. None of them tells you what the total cash position looks like when you combine them, or which combinations produce the lowest out-of-pocket requirement for a specific buyer scenario.
This page does that. Here is how to stack SA's first home buyer incentives correctly, what conditions must be satisfied for each layer, where the programs conflict rather than compound, and what the combined effect looks like in three realistic purchase scenarios.
The Four Layers of the SA Incentive Stack
Layer 1: Stamp Duty Abolition
Since June 6, 2024, eligible first home buyers in South Australia pay zero stamp duty on new homes — no value cap, no tiered relief. This applies to:
- Newly built homes never previously occupied or sold as a residence
- Off-the-plan apartments
- Vacant land intended for construction of a new home
- Substantially renovated properties (where the bulk of the original structure has been replaced)
For established homes — existing houses that have been lived in previously — there is no stamp duty exemption or concession whatsoever in South Australia. A first home buyer purchasing a $600,000 established home pays the full rate schedule: $26,830 in stamp duty.
The hidden bonus: When stamp duty is fully abolished, the Land Services SA ad valorem transfer registration fee is also waived. This is a statutory link in the Real Property (Fees) Notice: where a transfer is entirely exempt from stamp duty, the transfer registration fee drops to a flat $198 minimum. On a $600,000 property, the ad valorem transfer fee would otherwise be approximately $5,952. That waiver is automatic — it does not require a separate application.
Layer 2: The $15,000 First Home Owner Grant (FHOG)
The FHOG provides a $15,000 tax-free cash payment to eligible first home buyers purchasing or building a new home. Since June 6, 2024, the property value cap has been removed entirely. Previously the grant was restricted to properties under $650,000; it now applies regardless of the new home's final value.
Eligibility requirements: all applicants must be natural persons over 18; at least one must be an Australian citizen or permanent resident; neither the applicant nor their spouse or domestic partner may have previously owned and occupied any Australian residential property for six months or more since July 1, 2000; and the buyer must occupy the home as their principal place of residence for a continuous six months. For a completed new home, occupancy must begin within 12 months of settlement. For vacant land, it must begin within 12 months from the date the completed home can lawfully be used or within 36 months of settlement, whichever occurs first.
Do not assume the $15,000 is available as a deposit or settlement cash. Confirm the grant payment timing for the transaction with RevenueSA and the lender before relying on it in your cash-to-close calculation.
Layer 3: HomeStart Finance Products
HomeStart Finance is the South Australian Government's own lender. It sits alongside mainstream banks as an alternative, not a supplement — if you borrow from HomeStart, you choose HomeStart, not a big-four bank. The critical HomeStart products for first home buyers:
| Product | Min Deposit | Key Feature |
|---|---|---|
| Graduate Loan | 2% to buy, 5% to build | For Certificate III+ holders; no LMI |
| Low Deposit Loan | 3% for established homes | No LMI; lowest deposit barrier for existing property |
| Standard HomeStart Loan | 5% to buy, 8% to build | Baseline; eliminates LMI for new builds |
| Shared Equity Option | Up to 25% government contribution | Interest-free, repayment-free until sale, refinance, or buyout |
| Starter Loan | Up to $10,000 | Covers upfront transaction costs |
The Shared Equity Option is the most powerful stacking mechanism for buyers under the net household income cap of $120,000. HomeStart contributes up to 25% of the property price as an interest-free, repayment-free loan — you repay it only when you sell, refinance, or voluntarily buy it out. A buyer targeting a $500,000 new build can have HomeStart contribute $125,000 as an equity contribution, meaning they only need to service the remaining purchase funding as a loan and buyer contribution. The property price cap for the Shared Equity Option is $750,000 in metropolitan Adelaide.
The Repayment Safeguard is a HomeStart feature with no mainstream equivalent: your initial repayments are calculated based on affordability rather than a fixed loan term, and they are insulated from interest rate changes for 12-month periods. For buyers anxious about rate movements, this is a structural protection worth modelling.
Layer 4: Federal First Home Guarantee
The federal First Home Guarantee (formerly the First Home Loan Deposit Scheme) allows eligible buyers to purchase with a 5% deposit without paying Lenders Mortgage Insurance. As of October 2025, income caps were abolished — no singles income limit, no couples income limit. Annual allocation quotas were also removed; the scheme now operates as an uncapped, demand-driven program.
SA property price caps: $900,000 for Adelaide and regional centres; $500,000 for the rest of SA.
The First Home Guarantee operates through participating mainstream lenders (the big four banks and numerous smaller lenders). It does not operate through HomeStart — choosing the federal guarantee means choosing a mainstream lender, which means not accessing HomeStart-specific products like the Graduate Loan or Shared Equity Option.
Where the Programs Stack vs Where They Conflict
Understanding which combinations are possible and which are mutually exclusive is the core planning task.
Stamp duty abolition + FHOG + HomeStart or federal guarantee: These state incentives can be used with either financing pathway, subject to eligibility. Confirm application and payment timing with RevenueSA, your conveyancer, and your lender; your lender choice does not by itself change the state eligibility rules.
HomeStart Graduate Loan + FHOG + stamp duty abolition: This is the maximum stacking position for a Certificate III+ holder targeting a new build. You bring a 5% build deposit, HomeStart lends without LMI, you pay zero stamp duty, you may qualify for the $15,000 FHOG, and the Land Services SA transfer fee drops to $198.
HomeStart Shared Equity + FHOG + stamp duty abolition: The same stacking applies. The Shared Equity Option reduces the loan you need to service while the state grants reduce cash-to-close. For buyers under the $120,000 net household income cap, this combination can reduce the upfront cash requirement and monthly repayment on a new build in SA.
Federal First Home Guarantee + FHOG + stamp duty abolition: This is the mainstream-bank version of the stack. Five percent deposit, no LMI, zero stamp duty, $15,000 FHOG. You lose access to HomeStart-specific products but gain access to a wider lender panel and potentially more competitive interest rates.
HomeStart Shared Equity + Federal First Home Guarantee: These cannot be combined. HomeStart is a direct lender; the federal guarantee applies to mainstream lenders. You choose one financing pathway.
Help to Buy (federal, launched December 2025) + HomeStart: These also cannot be combined. Help to Buy is a federal shared equity scheme operating through mainstream lenders with its own income caps ($100,000 for singles, $160,000 for couples) and property caps ($900,000 for Adelaide and major regional centres, $500,000 for the rest of SA). If eligible for both HomeStart Shared Equity and federal Help to Buy, the better choice depends on property price, income, and how long you expect to hold the property before selling.
Three Worked Scenarios
Scenario A: Certificate III Holder, $530,000 New House-and-Land Package, Playford
Buyer profile: Single, $75,000 income, Certificate III in Construction, $30,000 savings.
| Item | Amount |
|---|---|
| Purchase price | $530,000 |
| HomeStart Graduate Loan deposit (5% to build) | $26,500 |
| Stamp duty | $0 |
| Land Services SA transfer fee | $198 |
| Mortgage registration fee | $198 |
| FHOG (payment timing to confirm) | -$15,000 |
| Conveyancing (estimate) | $1,200 |
| Building and pest inspection | $600 |
| Cash required before FHOG payment | $28,696 |
| Savings remaining before FHOG payment | $1,304 |
The Graduate Loan requires a 5% deposit for a build. This buyer has enough savings for the deposit and listed costs before any FHOG payment; they should confirm the grant timing with RevenueSA and the lender rather than rely on it for the initial cash requirement. The critical remaining cost is the construction loan drawdowns during build.
Scenario B: Couple, $600,000 New Build, HomeStart Shared Equity
Buyer profile: Couple, combined income $110,000 (within the $120,000 net household income cap, subject to HomeStart eligibility assessment), $30,000 savings.
| Item | Amount |
|---|---|
| Purchase price | $600,000 |
| HomeStart contribution (20%) | $120,000 (interest-free, repayment-free) |
| Loan required (after 20% HomeStart contribution and 5% buyer deposit) | $450,000 |
| Buyer deposit (5% of total) | $30,000 |
| Stamp duty | $0 |
| Land Services SA transfer fee | $198 |
| Mortgage registration fee | $198 |
| FHOG (payment timing to confirm) | -$15,000 |
| Conveyancing | $1,500 |
| Net cash to close | ~$16,896 |
This couple's monthly repayment is calculated on a $450,000 loan, not $600,000 — a significant difference in serviceability. The 20% contribution is repaid when they sell, refinance, or voluntarily buy it out.
Scenario C: Established Home Purchase, $600,000
Buyer profile: Same couple as Scenario B, but targeting an established $600,000 home.
| Item | Amount |
|---|---|
| Purchase price | $600,000 |
| Deposit assumption (10%, without First Home Guarantee) | $60,000 |
| Stamp duty | $26,830 |
| Land Services SA transfer fee | $5,952 |
| Mortgage registration fee | $198 |
| FHOG | $0 (established home ineligible) |
| Conveyancing | $1,500 |
| Building and pest inspection | $800 |
| Total cash to close | $95,280 |
The same couple needs $95,280 to buy established at $600,000, versus approximately $17,000 on a comparable new build with full incentive stacking. That is a gap of approximately $78,000 — and the established home buyer also faces standard mortgage LMI costs if their deposit is below 20%.
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Who This Is For
- SA first home buyers who have read about FHOG and stamp duty separately but have not yet modelled their combined cash-to-close position
- Certificate III or higher qualification holders who want to know whether HomeStart's Graduate Loan is a better entry point than the federal First Home Guarantee
- Single-income buyers under the $120,000 income cap who are evaluating HomeStart's Shared Equity Option to boost purchasing power without increasing monthly repayments
- Couples comparing the $750,000 property price cap for HomeStart Shared Equity against properties in their target areas
- Buyers who want to understand the timing of FHOG payment relative to settlement and construction milestones
Who This Is NOT For
- Established home buyers — the FHOG and stamp duty abolition do not apply; the stacking system is new-build specific
- Buyers already fully through the finance approval and contract stage with all programs confirmed
- Investment property purchasers — all SA incentives require owner-occupier residency compliance
Tradeoffs
The incentive stack heavily favours new builds at the cost of location flexibility. New builds are concentrated in Adelaide's outer suburban corridors — Playford, Angle Vale, Aldinga, Mount Barker — where land is available. Established homes in inner and middle-ring suburbs carry a $42,000 to $47,000 government cost penalty. If your employment or lifestyle requires an inner suburb, the incentive stack does not override the cost of the commute from the outer corridors.
The Shared Equity Option reduces monthly repayments but creates a long-term equity obligation to the government. When property values appreciate — and Adelaide has grown by over 85% since 2020 — the government's share appreciates proportionally. A 20% equity stake in a $600,000 home today is $120,000; if that home is worth $750,000 in five years, the government's repayable share is $150,000. Buyers who expect to hold for a long time and have strong income growth may prefer a higher-deposit loan without shared equity.
The South Australia First Home Buyer Guide includes the full incentive stacking system with all four programs, three fully worked cash-to-close scenarios at different price points, HomeStart product comparisons, and the residency compliance requirements for protecting your FHOG if a construction delay pushes your timeline.
Frequently Asked Questions
Can I get the FHOG and stamp duty abolition if I use the federal First Home Guarantee?
Yes. The FHOG and stamp duty abolition are state government programs administered through RevenueSA. They apply to any eligible first home buyer purchasing a new home in SA, regardless of which lender or federal scheme you use. The federal First Home Guarantee is a separate federal mortgage mechanism — it determines your deposit and LMI situation, not your eligibility for state grants.
What counts as a "new home" for SA FHOG and stamp duty abolition?
A new home is a dwelling that has never previously been occupied or sold as a place of residence; a substantially renovated home where the bulk of the original structure has been replaced; an off-the-plan apartment; or a property purchased under a comprehensive building contract (house-and-land package). Vacant land for construction of a new home also qualifies for stamp duty abolition, though the FHOG applies only once the home is constructed and habitable.
When does the $15,000 FHOG actually arrive?
For completed new homes and house-and-land packages, confirm the FHOG payment timing and required documentation with RevenueSA and the lender. Have the full deposit and required settlement or construction funds available without assuming the grant will arrive at a particular milestone.
How long do I have to live in the home after settlement?
You must occupy the home as your principal place of residence for a continuous six months. For completed homes, occupancy must commence within 12 months of settlement. For vacant land, it must commence within 12 months from the date the completed home can lawfully be used or within 36 months of settlement, whichever occurs first. Failure to comply allows RevenueSA to claw back the stamp duty relief and FHOG, plus interest and potential penalties.
Is the Help to Buy federal scheme better than HomeStart Shared Equity for SA buyers?
It depends. HomeStart Shared Equity allows up to 25% government contribution (vs Help to Buy's 40% maximum and 40,000-place national cap), has a net household income cap of $120,000 (vs Help to Buy's $100,000 for singles, $160,000 for couples), and a property price cap of $750,000 in metro Adelaide (vs $900,000 for Help to Buy in Adelaide and major regional centres, and $500,000 for the rest of SA). HomeStart also offers the Repayment Safeguard — insulation from rate changes for 12-month periods — which Help to Buy does not. For buyers under both income caps, HomeStart's higher contribution ceiling and the Repayment Safeguard often make it the stronger choice for SA-specific new builds.
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