Help to Buy (Commonwealth Powers) Act 2025

Several technical concepts drive the mechanics of the Act and shape its legal effect: adoption (of Commonwealth law), amendment reference, “express amendment”, the defined primary and residual versions, “amendment matters”, excluded matters, and the Schedule insertions that alter State tax and grant treatment and permit information sharing.

Adoption: The Act expressly adopts specified versions of the Commonwealth Help to Buy Act as State law under s 51(xxxvii) (s 4(1)). Adoption is defined to operate for a period beginning at commencement and ending on the day fixed by proclamation under s 7(1). The adopted text is the Commonwealth Act “as originally enacted and as amended from time to time before the commencement of section 4” but with particular divisions and sections excluded from each version (s 3(1): primary version and residual version). The Act also provides that words defined in the Commonwealth Help to Buy Act have the same meaning in this Act unless a contrary intention appears (s 3(2)). Mechanically this means tribunals, agencies and courts in South Australia will apply the adopted Commonwealth text as part of State law where the adoption applies.

Amendment reference: The Act refers “amendment matters” to the Commonwealth Parliament to permit express amendments of the Commonwealth Help to Buy Act that will operate in the State (s 6(1)). The referred matters are defined in s 3(1) to encompass entering into, administering and monitoring Help to Buy arrangements relating to residential property in the State while the State is a participating State, and anything incidental or conducive to those activities. The referral is not open-ended: it applies only to the extent the matter is not already within the Commonwealth’s legislative powers (other than via a section 51(xxxvii) reference) and only to the extent it is within the State’s legislative power (s 6(3)).

Express amendment: The Act distinguishes express amendments of the Commonwealth Help to Buy Act from other Commonwealth Acts or instruments that might affect the operation of that Act. “Express amendment” means direct textual amendment of the Commonwealth Act (insertion, omission, repeal, substitution, relocation) by a Commonwealth Act or instrument under a Commonwealth Act; it excludes enactments that have substantive effect otherwise than as part of the text of the Commonwealth Act (s 3(1): definition of express amendment). The referral in s 6(1) is confined to laws that make express amendments of the Commonwealth Help to Buy Act.

Primary and residual versions: The Act adopts two differently‑carved versions of the Commonwealth Act. The primary version is the Commonwealth Help to Buy Act as enacted and as amended before the commencement of s 4, other than Divisions 2 and 3 of Part 2, and other specified sections (s 3(1): primary version). The residual version is the same enactment but excludes Divisions 1 and 3 of Part 2 and a different set of specified sections (s 3(1): residual version). The Act adopts both versions (s 4(1)(a)-(b)), and each adoption is stated not to be affected by the other (s 4(2)). Practically this means the State has adopted the Commonwealth text but excluded identified Commonwealth provisions from that adoption; which particular provision applies in any instance will depend on whether the matter is within the adopted primary or adopted residual text.

Excluded matters: The Act declares a set of South Australian matters to be “excluded matters” for the purposes of section 41A of the Commonwealth Help to Buy Act in relation to the Help to Buy program (s 9(1)). Those excluded matters are a grant under the First Home and Housing Construction Grants Act 2000, any South Australian shared equity home buyer scheme (for example HomeStart Shared Equity Option), the administration and governance of those grants and schemes including exercise of compliance functions, and any matter prescribed by regulations (s 9(1)(a)-(d)). The declaration applies only to the extent the excluded matter would be inconsistent with the Commonwealth Act (s 9(2)).

Information-sharing and confidentiality carve-outs: Schedule 1 inserts provisions into State taxes and grants laws that (a) require that an interest of the Commonwealth or Housing Australia in land under a Help to Buy arrangement be disregarded for various assessments (Emergency Services Funding Act, Land Tax Act, Stamp Duties Act; Schedule Parts 1, 3 and 4); (b) exempt from duty instruments recording a change in interest when a participant increases their share percentage in land under a Help to Buy arrangement (Schedule Part 4, s 60AB(2)); and (c) authorise public servants and tax officers to disclose information to the Commonwealth or Housing Australia to assist determining whether a person is ineligible to participate in a Help to Buy arrangement, and exclude certain confidentiality or secrecy provisions from applying to those disclosures (Schedule Part 2 s 6B(2)-(3); Part 5 s 78A(1)-(2)). These changes operate by statutory deeming or authorisation to facilitate coordination between State revenue/grants agencies and Commonwealth/Housing Australia.

Consultation and objection mechanics: Section 10 sets out how the State’s Minister may lodge objections to Commonwealth matters under s 46(1) of the Commonwealth Act, requires publication in the Gazette as soon as practicable, and allows the Minister to withdraw objections and to require an additional 15 business days during the minimum consultation period (s 10(1)-(8)). A notice’s validity is unaffected by a failure to publish (s 10(9)). The Act thus creates a formal State process to register objections and seek extra time in Commonwealth‑level consultation.

Regulation and delegation power: Section 11 grants the Governor regulation‑making power and expressly allows regulations to provide for matters to be determined by the discretion of the Minister or any specified person or body (s 11(1)-(2)(d)). That permits the State to shape implementation detail and to delegate certain determinations to executive officials.

Termination and legal continuity: The Governor may terminate adoption of the primary version, the residual version, or the amendment reference by proclamation (s 7(1)). Repeal of a proclamation is permitted in narrow circumstances but only if done before the day fixed for termination (s 7(2)-(3)). Section 8 clarifies that laws made under the amendment reference before termination continue to operate in the State, and the Commonwealth Help to Buy Act as in operation immediately before termination continues to operate (s 8(1)-(4)). This preserves legal continuity for laws enacted under the reference even if the reference is later terminated.

Taken together, those concepts determine the interface between Commonwealth Help to Buy legislation and South Australian law, identify which parts of the Commonwealth Act the State has adopted, set limits on the Commonwealth’s capacity to alter the operation of the program in South Australia via the express amendment route, and create state law mechanisms to align tax, duty and grant rules with the operation of Help to Buy arrangements while permitting specific information sharing.

This Act affects multiple classes of actors, and the distribution of decision‑rights and obligations it creates is specific and contractual in nature.

Participants and potential participants in Help to Buy arrangements: Individuals entering into Help to Buy arrangements relating to residential property in South Australia will be directly affected because the Commonwealth Help to Buy Act (as adopted, and as it may be expressly amended under the reference) will apply in the State (s 4(1)). That means when an arrangement exists while South Australia is a participating State, the Commonwealth framework , subject to the exclusions and amendments permitted by the Act , governs matters such as entry into and administration of shared‑equity arrangements, where those matters are part of the adopted text.

Commonwealth bodies and Housing Australia: The Act interacts with Housing Australia by authorising State agencies to disregard and to disclose information concerning Housing Australia’s or Commonwealth interests in land under Help to Buy arrangements (Schedule ss 15A(1), 6B(1), 9A(1), 60AB(1); s 6B(2); s 78A(1)). Housing Australia’s practical involvement may include holding an interest in land or participating in shared‑equity arrangements. The Act restricts the referral so that, after the State ceases to be a participating State, the Commonwealth may not be given Housing Australia’s function to enter into shared‑equity arrangements for residential property in the State (s 6(2)(a)).

State revenue and grants agencies: The State’s revenue, grants and taxation administrators will be affected operationally. The Schedule requires them to treat a Commonwealth/Housing Australia interest as disregarded for the purposes of assessing the emergency services levy, land tax and stamp duty (Schedule Parts 1, 3 and 4). The First Home and Housing Construction Grants Act is amended to treat Commonwealth/Housing Australia interests as disregarded for grant eligibility; officers engaged in administering that Act are authorised to disclose information to the Commonwealth or Housing Australia for the purpose of determining ineligibility (Schedule Part 2, ss 6B(1)-(2)). Tax officers are authorised to disclose taxation information to the Commonwealth or Housing Australia (Schedule Part 5, s 78A(1)). Those authorisations remove or narrow confidentiality protections that would otherwise apply (ss 6B(3) and 78A(2) exclude s 41 and s 80 respectively).

Private sector service providers and conveyancers: Conveyancers, lawyers, lenders and other private sector actors dealing with property transactions will need to apply the amended duty and tax rules. Schedule s 60AB(2) creates a specific exemption from duty for an instrument that records or effects a change in an interest in land that occurs as a result of an increase in a person’s share percentage in land purchased under a Help to Buy arrangement. Conveyancing practice will need to take account of the disregarding of Commonwealth/Housing Australia interests for assessment and the duty exemption for changes in share percentage.

HomeStart Finance and other State shared‑equity schemes: The Act expressly lists South Australian shared equity home buyer schemes, such as the HomeStart Shared Equity Option provided by HomeStart Finance, as “excluded matters” for s 41A of the Commonwealth Act (s 9(1)(b)). That means those State schemes and their administration are declared excluded to the extent they would otherwise be inconsistent with the Commonwealth Act. HomeStart Finance, as an existing statutory corporation, will continue to administer its scheme independently of the Commonwealth arrangements where the exclusion applies.

The Minister and the State executive: The Minister acting on behalf of the State gains procedural powers to lodge objections under the Commonwealth Act’s consultation framework and to seek an additional 15 business days during the minimum consultation period (s 10(1), (7)). The Minister also has responsibilities to publish notices given to the Commonwealth Minister in the Gazette as soon as practicable (s 10(2), (5), (8)(a)), though the validity of the notice does not depend on publication (s 10(9)). Regulations may authorise the Minister or specified persons or bodies to exercise discretion (s 11(2)(d)).

State taxpayers and budgets: The State’s fiscal position is affected indirectly. By providing that Commonwealth/Housing Australia interests in land under Help to Buy arrangements be disregarded for levy, land tax and duty purposes (Schedule Parts 1, 3 and 4), the Act alters the taxable or dutiable base used to calculate State levies and revenues; the concrete result depends on the incidence of those interests and on how assessments were previously done. The Act does not itself appropriate funds to pay for Commonwealth roles; it changes legal treatment of interests and allows information flows to the Commonwealth, with potential downstream budgetary effects.

Courts, tribunals and regulators: Courts and tribunals will have to apply the adopted Commonwealth text as State law and give effect to the Schedule amendments in deciding revenue, duty and grant eligibility disputes. The adoption and the referral create an unusual legal interface where Commonwealth legislation , adopted as State law but with specified exclusions and with an express amendment route to the Commonwealth Parliament , governs certain questions that otherwise would be purely State matters.

Journalists, compliance professionals and researchers: Practitioners advising on property transactions, taxation, or benefit eligibility will need to track the Commonwealth Help to Buy Act as it applies in South Australia (including any express Commonwealth amendments made under the reference while it is in force), the State’s regulations under s 11, and the Schedule amendments to existing State revenue and grants statutes.

The Act therefore re‑allocates who decides certain legal parameters (some subject matter is now governed by adopted Commonwealth text, and the Commonwealth can make further express changes within the referred scope), changes how State revenue and grant agencies must treat Commonwealth/Housing Australia interests and share information with the Commonwealth, and creates formal State procedures for objection and extended consultation. The operation of these changes is time‑limited by the Governor’s power to terminate adoption and/or the amendment reference by proclamation (s 7).

The Act creates statutory duties and rights at several levels: adoption and amendment mechanics, State procedural duties under the Commonwealth consultation framework, State agency statutory duties to disregard certain interests for assessments and to disclose information, and regulatory/delegation powers.

Duties to the Commonwealth and limits on Commonwealth power: By referring amendment matters to the Commonwealth, the State gives the Commonwealth Parliament power to make express amendments to the Commonwealth Help to Buy Act in relation to matters described in s 3(1). The State thereby authorises the Commonwealth to legislate in those areas insofar as the subject matter is not otherwise within Commonwealth power and is within State power (s 6(1), (3)). This creates a right for the Commonwealth to amend the Commonwealth Act in specified ways and a corresponding consequence that the amended Commonwealth text will operate in the State where the adoption continues.

Restrictions on express amendments: The Act places explicit limits on what the Commonwealth may do under the referral. The Commonwealth cannot make a law that gives Housing Australia (after the State ceases to be a participating State) the function or power to enter into shared equity arrangements relating to residential property in the State (s 6(2)(a)). The Commonwealth also cannot substantively remove or override any Commonwealth Help to Buy Act provision that requires State approval before certain things are done, nor can it remove or override sections 41, 41A or 42 of the Commonwealth Help to Buy Act (s 6(2)(b)(i)-(ii)). These are statutory constraints designed to preserve particular state approval rights and confidentiality protections.

State Minister’s rights and duties under consultation: The Minister acting for the State may object to a matter for the purposes of the Commonwealth Help to Buy Act by giving notice to the Commonwealth Minister during the minimum or extended consultation period (s 10(1)). On giving that notice the Minister must ensure publication in the Gazette “as soon as practicable” (s 10(2)). The Minister may also withdraw an objection by giving notice, and must publish the withdrawal in the Gazette (s 10(4)-(5)). The Minister may require an extra 15 business days during the minimum consultation period to consider a matter (s 10(7)); notice of that requirement must be published and will extend the consultation period (s 10(8)). The Act treats such notices as constituting the State’s objection or withdrawal for the purposes of the Commonwealth Help to Buy Act (s 10(3), (6)). The validity of notices to the Commonwealth is not affected by failure to publish in the Gazette (s 10(9)).

Duties on State revenue and grants agencies to disregard interests: Schedule 1 inserts duty‑defining provisions requiring the relevant State Acts to treat Commonwealth or Housing Australia interests in land under a Help to Buy arrangement as disregarded for assessment purposes. Specifically:

• Emergency services levy: Inserted s 15A requires that an interest the Commonwealth or Housing Australia has in land be disregarded for the purposes of assessing the levy in respect of land purchased under a Help to Buy arrangement (Schedule Part 1, s 15A(1)).
• First Home and Housing Construction Grants: Inserted s 6B(1) requires that an interest the Commonwealth or Housing Australia has (or will have) in land be disregarded for the purposes of assessing eligibility for any grant under that Act, and that the Commonwealth or Housing Australia be taken not to be an interested person for the purposes of s 15 (Schedule Part 2, s 6B(1)).
• Land tax: Inserted s 9A(1) requires an interest the Commonwealth or Housing Australia has in land be disregarded for the purposes of assessing land tax on land purchased under a Help to Buy arrangement (Schedule Part 3, s 9A(1)).
• Stamp duty: Inserted s 60AB(1) requires Commonwealth or Housing Australia interests to be disregarded for the purposes of assessing liability for duty on conveyance or transfer of land purchased under a Help to Buy arrangement (Schedule Part 4, s 60AB(1)). Additionally s 60AB(2) grants an exemption from duty for an instrument that records or effects a change in interest in land that results from an increase in a person’s share percentage in land purchased under a Help to Buy arrangement.

Rights to disclose and carve‑outs to secrecy: The Schedule gives State officers express rights to disclose information to the Commonwealth or Housing Australia to assist in determining whether a person is ineligible to be a participant in a Help to Buy arrangement. Under Schedule Part 2 s 6B(2) a person engaged in work related to administering the First Home and Housing Construction Grants Act is authorised to disclose information obtained in the course of that work to the Commonwealth or Housing Australia for that purpose; s 6B(3) provides that s 41 (a confidentiality provision in the State Act) does not apply to information obtained under s 6B(2). Under Schedule Part 5 s 78A(1) a tax officer is authorised to disclose information obtained under or in relation to a taxation law to the Commonwealth or Housing Australia to assist in determining ineligibility, and s 78A(2) states that s 80 (a secrecy provision) does not apply to information obtained from a tax officer under s 78A(1).

Regulatory and discretionary rights: The Governor may make regulations for the Act (s 11(1)). Regulations may be tailored by application and may include saving or transitional provisions (s 11(2)(a)-(c)). Critically, regulations may provide that a matter subject to regulations is to be determined according to the discretion of the Minister or any specified person or body (s 11(2)(d)), creating statutory delegation possibilities for implementation.

Termination power: The Governor has a statutory power to fix a day by proclamation for the termination of the adoption of any or all of the primary version, the residual version, or the amendment reference (s 7(1)). Repeal of a proclamation is permitted but must occur before the day fixed (s 7(2)-(3)). These provisions give the executive a mechanism to end the State’s adoption of the Commonwealth Act and the State’s amendment reference, subject to the technical constraints and transitional protections in s 8 that preserve laws made under the reference before termination.

Continuity and non‑retrospectivity protections: Section 8 preserves the continued operation in the State of laws made under the amendment reference before termination, and permits continued operation of the Commonwealth Help to Buy Act as in operation immediately before termination or as subsequently amended by laws made under the reference (s 8(1)-(4)). Thus a law made under the reference does not automatically lapse on termination of the reference; those laws continue to operate unless adoption is later terminated.

Obligations to publicise State notices: The Minister must ensure that notices of objection, withdrawal, or request for extended consultation are published in the Gazette “as soon as practicable” (s 10(2), (5) and (8)(a)), though the validity of the notice does not turn on publication (s 10(9)). That creates an administrative duty with a flexible timing standard but retains statutory effect even if publication is omitted.

These duties and rights reallocate administrative responsibilities between State and Commonwealth actors, create statutory entitlements to information exchange, adjust the legal treatment of governmental and quasi‑governmental interests in property for revenue and grant purposes, and embed executive discretion through regulations where specified.

The Act itself contains no new criminal penalties or fine regimes; it is primarily a machinery Act that adopts Commonwealth legislation, creates referral powers, declares excluded matters, sets out consultation mechanics and modifies certain State revenue and information provisions. Enforcement implications arise mainly through the operational effects of the Commonwealth Help to Buy Act (as adopted) and through the Schedule amendments to existing State statutory schemes (which bring their own enforcement and penalty regimes).

No direct offences in the Act: The Help to Buy (Commonwealth Powers) Act 2025 does not create new offences, penalty provisions, or summarised regulatory enforcement powers within its own text. Its substantive effect is to embed Commonwealth statutory obligations (the adopted Commonwealth Help to Buy Act provisions) into State law and to alter existing State revenue and confidentiality law by statutory amendment in Schedule 1. Any offences or penal consequences that flow from the Commonwealth Help to Buy Act will be enforceable where that Act is adopted, but those offences are part of the Commonwealth Act (as adopted) rather than this Act.

Enforcement via existing revenue and grants regimes: Schedule 1 amends State statutes that already contain enforcement, assessment and penalty frameworks:

• For land tax, stamp duty and the emergency services levy, the substantive enforcement mechanisms, assessment adjustment powers, audit powers, penalties and appeal rights will continue to apply under the relevant State statutes (Land Tax Act 1936, Stamp Duties Act 1923, Emergency Services Funding Act 1998) as amended by the Schedule. The Schedule does not remove existing assessment, penalty, or objection mechanisms; it changes the taxable or dutiable base (for example, by directing that Commonwealth/Housing Australia interests be disregarded) and introduces a specific duty exemption in s 60AB(2) for certain instruments. Any contravention of an instrument (for example, false declaration) will be dealt with under the existing statutory enforcement regimes in those Acts.
• For grants, the First Home and Housing Construction Grants Act 2000 will operate with the inserted s 6B, which modifies eligibility assessment and authorises disclosures. Those grants statutes typically contain their own compliance and recovery mechanisms for improperly obtained grants; these mechanisms remain in place unless separately amended.

Information sharing and secrecy carve‑outs: Schedule Part 2 s 6B(3) and Part 5 s 78A(2) remove the applicability of particular State secrecy provisions to disclosures made under the new authorisations. That does not, in the Act’s text, create penalties for improper disclosure beyond the statutory carve‑out; it instead creates a lawful channel for specified disclosures to the Commonwealth and Housing Australia, and disapplies confidentiality provisions that might otherwise prevent those disclosures. Any misuse of information disclosed under these authorisations may, depending on other statutes or common law principles, give rise to separate legal consequences (for example privacy or contractual remedies), but the Act itself contains no express penalty regime for misuse following lawful disclosure.

Objection and consultation process: Section 10 confers rights to give notice of objection and to require extended consultation, but offers no penalty for failure by the Commonwealth to accord with State objections. The Act does state that a notice’s validity is not affected by a failure to publish (s 10(9)), but does not provide an enforcement mechanism against Commonwealth action. The Commonwealth Help to Buy Act (as adopted) and the intergovernmental consultation processes are the instruments that will govern responses to objections.

Termination and legal continuity: Section 7 allows the Governor to terminate adoption or the amendment reference by proclamation. Section 8 protects laws made under the amendment reference from being undone by later termination. There are no penalties for failure to make or repeal proclamations, but legal effects flow from their making. Administrative failure to publish or comply with the procedural steps set out in the Act does not attract criminal penalties in the text; s 10(9) confirms notices are valid despite failure to publish.

Regulatory delegation and ministers’ discretion: Section 11 permits regulations that delegate determinations to the Minister or to another specified person or body (s 11(2)(d)). Where regulations are made under that power and those regulations include offences or penalties (the Act allows regulations of general or limited application, s 11(2)(a)), any penalties will come from those regulations or from the principal Acts being amended, not from this Act itself. Practitioners must therefore consult the regulations when they are made to assess any additional enforcement consequences.

Appeals and judicial review: The Act does not alter the availability of judicial review or statutory appeal mechanisms in relation to decisions taken under the adopted Commonwealth text or under the amended State statutes. Judicial review of administrative action is governed by general administrative law principles and by the statutes that confer particular powers. The Act’s adoption mechanism may create novel questions about the proper construction of Commonwealth provisions when applied as State law, but the Act itself does not create specialised enforcement or appeal pathways.

In sum, enforcement under this Act mainly arises indirectly , through enforcement mechanisms embedded within the Commonwealth Help to Buy Act as adopted and through the enforcement provisions already present in the amended State Acts in Schedule 1. The Act provides lawful channels for specified disclosures and modifies assessment bases, but does not introduce standalone penal provisions or an independent regulator distinct from existing Commonwealth or State administrative machinery.

The Act creates a direct statutory interface between Commonwealth and South Australian law, alters specific State taxation and grant statutes, and preserves certain State governance prerogatives. Several interaction rules and cross‑references are explicit in the text.

Adoption of Commonwealth legislation as State law: Section 4 adopts the primary and residual versions of the Commonwealth Help to Buy Act within the meaning of s 51(xxxvii) of the Constitution (s 4(1)-(3)). Section 3(2) provides that words defined in the Commonwealth Help to Buy Act and otherwise used in this Act have the same meaning here as in the Commonwealth Act, unless the contrary intention appears. This creates an immediate textual interaction: the Commonwealth Act’s definitions and operative language apply in State law wherever the adopted Commonwealth text applies.

Excluded portions of the Commonwealth Act: The Act defines the primary and residual versions by exclusion of particular Divisions and sections from the Commonwealth Help to Buy Act (s 3(1)). For example, the primary version is the Commonwealth Act “as originally enacted and as amended from time to time before the commencement of section 4, other than (a) Divisions 2 and 3 of Part 2 of that Act; and (b) sections 24(1)(a)(ii), 25(3)(b) and (c) and 38 of that Act.” The residual version excludes Divisions 1 and 3 of Part 2 and a different set of sections. This means application of Commonwealth provisions in South Australia is partial; the State retains control over the excluded subject matter even as it adopts other Commonwealth provisions.

Limits on Commonwealth amendments and other Commonwealth powers: Section 6(1) refers amendment matters to the Commonwealth “but only to the extent of making laws with respect to those matters by making express amendments of the Commonwealth Help to Buy Act.” Section 5, however, expressly records the State’s intention that the Commonwealth Help to Buy Act may be amended or otherwise affected by Commonwealth Acts that are based on constitutional powers other than the s 51(xxxvii) reference, or by instruments made under the Commonwealth Help to Buy Act or other Commonwealth provisions (s 5(a)-(b)). This preserves the possibility that the Commonwealth could alter the Act’s operation in the State by relying on other constitutional powers or subordinate instruments, not solely through the express amendment route created by the reference.

State exclusions and consistency clause: Section 9 declares certain State grants and shared equity schemes to be “excluded matters” for the purposes of s 41A of the Commonwealth Help to Buy Act, but the declaration applies only “to the extent to which the excluded matter would, but for this section, be inconsistent with the Commonwealth Help to Buy Act in relation to the Help to Buy program” (s 9(2)). That creates a conditional interaction: the State identifies an area it wishes to consider outside Commonwealth competence, but the exclusion only takes effect to resolve inconsistencies. Where no inconsistency exists, Commonwealth provisions will continue to apply.

Modifications to State taxes and grants: Schedule 1 amends five State Acts to align certain assessment and disclosure rules with the Help to Buy arrangements:

• Emergency Services Funding Act 1998 (inserts s 15A): interest of Commonwealth/Housing Australia disregarded for levy assessment (Schedule Part 1).
• First Home and Housing Construction Grants Act 2000 (inserts s 6B): Commonwealth/Housing Australia interest disregarded for grant eligibility and authorises disclosure of grant administration information to the Commonwealth/Housing Australia (Schedule Part 2).
• Land Tax Act 1936 (inserts s 9A): Commonwealth/Housing Australia interest disregarded for land tax assessment (Schedule Part 3).
• Stamp Duties Act 1923 (inserts s 60AB): Commonwealth/Housing Australia interests disregarded for duty assessment; a specified exemption for instruments recording an increase in share percentage (Schedule Part 4).
• Taxation Administration Act 1996 (inserts s 78A): tax officers may disclose taxation information to the Commonwealth/Housing Australia and s 80 (secrecy provision) does not apply to those disclosures (Schedule Part 5).

These amendments do not repeal the host statutes; they modify the bases on which liability and eligibility are assessed. Administratively, those statutes and their enforcement regimes will continue to interact with other State laws (for example, audit powers, objections, and appeal rights), but the Schedule expressly alters the treatment of Commonwealth/Housing Australia interests and confidentiality protections in these contexts.

Confidentiality carve‑outs and privacy frameworks: The Schedule disapplies specific State secrecy provisions (s 41 and s 80) to allow authorised disclosures to the Commonwealth or Housing Australia (Schedule Part 2 s 6B(3); Part 5 s 78A(2)). Those carve‑outs interact with other legal restrictions on information sharing, including Commonwealth secrecy and privacy laws and any statutory protections within the Commonwealth Help to Buy Act itself. The Act does not repeal Commonwealth privacy laws or confessional obligations that operate at Commonwealth level; it authorises State officers to disclose information to the Commonwealth or Housing Australia and removes State secrecy constraints for those disclosures.

Regulations and delegated interaction: Section 11 permits regulations to be made that are “contemplated by, or necessary or expedient for the purposes of” the Act, and allows regulations to leave matters to Ministerial discretion (s 11(1)-(2)(d)). Regulations could therefore create further interaction points with other State administrative law, including delegation frameworks, exemptions, transitional arrangements and administrative procedures, and could set out processes by which State agencies coordinate with Commonwealth authorities.

Preservation of laws made under the reference: Section 8 states that if the amendment reference is terminated before adoption is ended, the termination does not affect laws made under that reference before termination and does not affect the continued operation in the State of the Commonwealth Help to Buy Act as in operation immediately before termination or as subsequently amended by laws made under the reference (s 8(1)-(4)). This provides continuity and prevents inadvertent repeal of laws made under the reference if the reference is later ended.

Interaction with constitutional doctrine: The Act relies on section 51(xxxvii) as the constitutional mechanism for the adoption and reference. Section 6(3) emphasises that the referral has effect only to the extent the matter is not included in the Commonwealth’s legislative powers otherwise and is included in the State’s power. That clause recognises the constitutional limits on referrals and the way they interact with other Commonwealth powers; it may be relevant in later constitutional analysis should disputes arise about the Commonwealth’s capacity to legislate in particular respects affecting the State.

In short, the Act creates a layered legal architecture: Commonwealth statutory provisions (adopted text) operate in the State subject to specified exclusions; the Commonwealth may amend the adopted text by express amendment in limited areas referred to it; State laws have been amended to align revenue and grant treatment with the Help to Buy arrangements and to permit specified information flows; and the State retains consultative and termination mechanisms. Practitioners must therefore read the Commonwealth Help to Buy Act, this Act, and the amended State statutes together to understand rights, liabilities and processes.

The Act’s legislative history as recorded in the instrument is succinct. The Help to Buy (Commonwealth Powers) Act 2025 (No 66 of 2025) received assent and commenced on 4 December 2025 (Legislative history and s 2). The Act’s structure displays built‑in mechanisms to accommodate future change by way of Commonwealth express amendments under the referral, State regulations, and proclamation for termination.

Key textual amendment points and their significance within the Act:

• Adoption timing and future amendments: Section 4 adopts the primary and residual versions of the Commonwealth Help to Buy Act “as originally enacted and as amended from time to time before the commencement of section 4” (s 3(1) definitions read in conjunction with s 4). That language means the State adopts the form of the Commonwealth Act as it stood at, and up to, the commencement of adoption , not frozen to the Act’s form at enactment, but inclusive of Commonwealth amendments made before the commencement of s 4. The Act therefore incorporates any Commonwealth amendments enacted before the State’s adoption commenced.
• Ongoing Commonwealth amendments under the reference: Section 6 refers amendment matters to the Commonwealth, but only to permit express amendments of the Commonwealth Help to Buy Act (s 6(1)). The amendment reference is itself time‑limited by s 7(1)(c), which allows the Governor to fix the day on which the amendment reference is to terminate by proclamation. Any express amendments the Commonwealth makes under that reference while it is in force will affect the operation of the Commonwealth Act in the State; s 8 preserves those laws even if the amendment reference is later terminated.
• State regulatory power to implement: Section 11 gives the Governor the regulation‑making power necessary to implement the Act, including the power to create saving and transitional provisions and to delegate matters to Ministerial discretion (s 11(2)). This provides a vehicle for the State to effect administrative amendments or transitional arrangements without further primary legislation.
• Schedule amendments into existing State law: Schedule 1 inserts new sections across five existing Acts (Emergency Services Funding Act 1998, First Home and Housing Construction Grants Act 2000, Land Tax Act 1936, Stamp Duties Act 1923, Taxation Administration Act 1996). Those insertions are standalone amendments to the host Acts and therefore will appear in the consolidated versions of those statutes; any future amendment to the treatment of these matters can be effected through usual State legislative processes.

There is no recorded history in the instrument of prior amendments to this State Act (it is the principal Act as enacted in 2025). There is no schedule of subordinate instruments attached in the legislative history, but s 11 envisages regulations will be made as necessary or expedient.

Because the Act expressly contemplates Commonwealth express amendments of the Commonwealth Act, its future legal shape in the State is partly contingent on future Commonwealth legislative activity (subject to the constraints in s 6(2) and the constitutional limits in s 6(3)). The Act therefore creates a hybrid amendment landscape: some changes will be made by State regulation and proclamation (s 7, s 11), some by State legislative amendment to the host Acts in the Schedule, and some by the Commonwealth using the s 51(xxxvii) reference route while the amendment reference remains in force. Section 5 also leaves open the Commonwealth’s ability to affect the Commonwealth Help to Buy Act by relying on other heads of constitutional power or by subordinate instruments, which could alter the Act’s application in the State irrespective of the referral mechanism.

In sum, the amendment history to date is limited to enactment and commencement on 4 December 2025. The Act sets out explicit mechanisms for future amendment by both Commonwealth and State actors and records limits and transitional protections linked to proclamations and the time‑bounded nature of the adoption and amendment reference.

The Act’s text contains no references to judicial decisions, nor does the recorded legislative history list any litigation. As a statute enacted and commenced on 4 December 2025, there is no case law cited within the Act itself. The Act does not mention previous judicial constructions or existing litigation concerning the Commonwealth Help to Buy Act 2024; it simply adopts specified versions of that Commonwealth Act and makes related State amendments.

Potential litigation vectors implicit in the Act (but not recorded in any existing case law within the instrument) include:

• Constitutional challenges to the referral mechanism: Section 6 makes an amendment reference under s 51(xxxvii). Constitutional questions in future litigation could arise about whether particular express amendments the Commonwealth enacts under the reference fall within the scope of the referred matters and about whether the referral satisfies constitutional requirements (for example, the limitation in s 6(3) that the referral has effect only “if and to the extent that the matter is not included in the legislative powers of the Parliament of the Commonwealth (otherwise than by a reference for the purposes of section 51(xxxvii) …)”). The Act itself contains no adjudication of such questions.
• Challenges to the application of adopted Commonwealth provisions in State law: Because the State has adopted the Commonwealth Help to Buy Act (subject to exclusions), litigation may arise about how particular Commonwealth provisions operate as State law, how the excluded sections affect applicability, or about the interplay between Commonwealth subordinate instruments and the State adoption (s 5 contemplates instruments affecting the Commonwealth Act).
• Disputes over revenue and duty assessments: The Schedule’s amendments to clarify that Commonwealth or Housing Australia interests are to be disregarded for various assessments could generate disputes in the revenue tribunals or courts about the correct application of the new deeming provisions, about the scope of the duty exemption in s 60AB(2) (instruments recording change in share percentage), and about retroactivity or transitional application. Those disputes would arise under the amended State Acts.
• Privacy and information‑sharing litigation: The Schedule authorises disclosures by State grant administrators and tax officers to the Commonwealth or Housing Australia and disapplies particular State secrecy provisions (s 6B(3) and s 78A(2)). Litigation could test the limits of those disclosure authorisations against other legal protections (for example, Commonwealth privacy laws, contractual confidentiality arrangements, or protections in other State statutes). The Act itself does not specify remedies or offences for misuse of disclosed information.

At present there is no litigation history recorded in the Act. Practitioners should monitor case law that may develop where the Commonwealth Help to Buy Act, as adopted into South Australian law, interacts with constitutional doctrine, revenue statutes, or information‑sharing rules. Any such litigation will involve interpreting the adopted Commonwealth text in the State context, the scope of the State’s exclusions, and the application of the Schedule amendments to concrete factual scenarios.

Several implementation and legal risk points are embedded in the Act’s text. These are concrete operational and legal features that advisers, administrators and participants should not overlook.

Adoption is partial and defined by excluded sections: The Act adopts two differently defined “versions” of the Commonwealth Help to Buy Act , the primary and residual versions , each excluding different Divisions and sections (s 3(1); s 4(1)). Which parts of the Commonwealth Act apply in the State therefore depends on close textual cross‑check between the Commonwealth Act and the State’s definitions of primary and residual versions. Practitioners must not assume the entirety of the Commonwealth Act is adopted; check the specific Divisions and sections excluded in the Act’s definition.

“As amended from time to time before commencement” , adoption timing nuance: The Act defines the adopted versions as the Commonwealth Act “as originally enacted and as amended from time to time before the commencement of section 4” (s 3(1)). That wording means any Commonwealth amendments made before the State’s adoption commenced are included, but amendments made after that commencement are not automatically included unless they are enacted under the amendment reference while it remains in force. Do not assume subsequent Commonwealth amendments apply in South Australia unless made under the express amendment route or under some other constitutional head of power and validly affecting the State (s 5).

Express amendment only, but other Commonwealth powers survive: The amendment reference permits only express amendments of the Commonwealth Help to Buy Act (s 6(1)-(2)), meaning the State has authorised the Commonwealth to alter the text of that Act for the referred matters. However s 5 explicitly states the Commonwealth Help to Buy Act may be amended or otherwise affected at any time by a Commonwealth Act based on other Commonwealth legislative powers or by instruments under the Commonwealth Act or other Commonwealth Acts (s 5). That creates a potential parallel route for Commonwealth action that may affect the operation of the Act in the State without relying on the s 51(xxxvii) reference. Practically, do not assume the Commonwealth will be limited to the express amendment route; it may legislate under other powers.

Limited protection against Commonwealth taking over State approval functions: Section 6(2) bars giving Housing Australia the function to enter into shared equity arrangements relating to residential property in the State after the State stops being a participating State. It also bars “substantively removing or overriding” any Commonwealth provision that requires State approval before certain things are done and bars removing/overriding sections 41, 41A or 42 (s 6(2)(a)-(b)). Those protections are narrowly framed and operate only in the text of the Commonwealth Act as amended under the referral; they do not prevent Commonwealth action under other constitutional powers. If control of particular approvals is important, verify whether the State exclusion in s 9 (excluded matters) or the s 6(2) constraints will suffice in practice.

Disregard of Commonwealth/Housing Australia interests reduces assessment bases: Schedule 1 instructs State revenue and grants administrators to disregard Commonwealth/Housing Australia interests for the emergency services levy, land tax and stamp duty assessments (Schedule Parts 1, 3 and 4). This changes the base for State revenue calculations. Administrators must update assessment systems and guidance to reflect that deemed disregard. Advisers should note that a deemed disregard does not automatically translate to zero payment: the statutory mechanics of assessments and apportionment in each host Act will determine practical outcomes. Also, the Schedule contains a duty exemption in s 60AB(2) for instruments reflecting an increase in share percentage; transaction advisers must be alert to that specific exemption and its scope.

Information sharing authorisations narrow State confidentiality protections: Schedule Part 2 s 6B(2) authorises grant administrators to disclose information to the Commonwealth or Housing Australia; s 6B(3) disapplies s 41 to those disclosures. Schedule Part 5 s 78A(1) authorises tax officers to disclose taxation information; s 78A(2) disapplies s 80. These are narrowly framed authorisations to assist in determining eligibility for Help to Buy arrangements. They do not state that such disclosures override other statutory or common law privacy obligations at the Commonwealth level; they do, however, remove specified State secrecy obstacles. Practitioners must check whether other laws constrain disclosure and whether consent or additional safeguards are necessary.

Validity of State notices does not depend on Gazette publication: Section 10(9) expressly states the validity of a State notice given to the Commonwealth Minister under ss 10(1), (4) or (7) is not affected by a failure to publish in the Gazette. That means publication is procedural rather than determinative. However s 10 requires the Minister to ensure publication “as soon as practicable” (s 10(2), (5), (8)(a)). Non‑publication will not invalidate the notice but may have political or administrative costs.

Regulation power allows delegation of discretionary decisions: Section 11(2)(d) allows regulations to provide that matters are to be determined according to the discretion of the Minister or any other specified person or body. That permits operational decisions to be left to executive officials. When advising clients, check the regulations once made to see which decisions are delegated and whether judicial review is available for discretionary acts.

Termination and continuity complexities: The Governor may terminate adoption or the amendment reference by proclamation (s 7(1)); repealing a proclamation has effect only if done and published before the day fixed (s 7(2)-(3)). Section 8 preserves laws made under the amendment reference even if the reference later terminates (s 8(1)-(4)). The interplay of proclamations, repeal of proclamations and the continued operation of Commonwealth laws in the State creates a layered temporal structure; practitioners must track proclamation dates and the timing of Commonwealth express amendments that were made under the reference.

Be precise when construing “Help to Buy arrangement” definitions: The Schedule amendments and many operative provisions rely on the definition of “Help to Buy arrangement” in the Commonwealth Help to Buy Act (the Act imports those definitions by s 3 and Schedule cross‑references). Since the State adopts Commonwealth definitions (s 3(2)), any change in the Commonwealth definition (depending on whether it is included in the adopted version and whether the amendment is made under the reference or other Commonwealth power) may change the application of the Schedule provisions in the State. Keep the definition front and centre in any eligibility or assessment analysis.

Ensure transactional advisers consider the duty exemption’s trigger wording: The s 60AB(2) stamp duty exemption applies to “an instrument that records or effects a change in an interest in land that occurs as a result of an increase in a person’s share percentage in land purchased under a Help to Buy arrangement.” The exemption’s applicability depends on the factual cause of the change in interest (an increase in share percentage) and on the land having been purchased under a Help to Buy arrangement. Care is required to structure documents so they fall squarely within the exemption when intended.

In summary, the principal gotchas are (a) the need to read the precise adopted Commonwealth text and its exclusions, (b) the possibility of Commonwealth action under other constitutional powers despite the referral, (c) the narrowness and condition‑based nature of State protections, (d) changes in State revenue assessment bases and duty exemptions, (e) authorised information‑sharing and the carve‑outs to State secrecy, and (f) the delegation and proclamation mechanics that condition the Act’s temporal effects. Practitioners should map these textual details to the facts of any planned Help to Buy participation or property transaction.

Compliance obligations arising from this Act fall into three practical domains for State agencies, property professionals, and persons who participate or intend to participate in Help to Buy arrangements: (1) tracking and applying the adopted Commonwealth Help to Buy Act and any Commonwealth express amendments made under the reference, (2) operationalising the Schedule 1 amendments in State tax, duty and grant administration, and (3) following the Ministerial consultation and Gazette publication requirements.

1. Track and apply the adopted Commonwealth text and related amendments

• Identify the applicable adopted version(s): Agencies and legal advisers must determine whether a particular provision of the Commonwealth Help to Buy Act is part of the primary or residual version as defined in s 3(1) and therefore adopted under s 4(1). The Act excludes particular Divisions and sections from each adopted version; do not assume blanket application of the Commonwealth Act.
• Monitor Commonwealth express amendments made under the amendment reference: While the amendment reference remains in force (s 6(4)), the Commonwealth Parliament may make express amendments of the Commonwealth Help to Buy Act that will operate in South Australia. Agencies should have a process to review Commonwealth legislative instruments and to update internal policies, forms and processes when express amendments are enacted.
• Pay attention to other Commonwealth instruments and Acts: Section 5 states the Commonwealth Help to Buy Act may be amended or have its operation otherwise affected by Commonwealth Acts based on other constitutional powers or by instruments under the Commonwealth Act or other Acts. Agencies should monitor relevant Commonwealth subordinate instruments and Acts for changes that could affect State application.

2. Operationalise Schedule 1 amendments in revenue, grants and information systems

• Revenue and duty assessments: Revenue officers must change assessment rules to disregard any interest the Commonwealth or Housing Australia has in land purchased under a Help to Buy arrangement for the emergency services levy (inserted s 15A), for land tax (inserted s 9A), and for stamp duty (inserted s 60AB(1)). Update assessment software, guidance notes, forms and audit criteria to reflect the statutory deeming and the stamp duty exemption for increased share percentage transactions (s 60AB(2)). Train staff to identify when land is purchased under a Help to Buy arrangement and how to treat Commonwealth/Housing Australia interests for assessment purposes.
• Grant eligibility and disclosure: Administrators of the First Home and Housing Construction Grants Act must apply inserted s 6B(1) to disregard Commonwealth/Housing Australia interests for eligibility assessments, and must use the authorisation in s 6B(2) to disclose relevant information to the Commonwealth or Housing Australia where necessary to determine ineligibility. Ensure internal policies specify what information may be shared, who may approve disclosures, and how records of disclosures are kept. Note that s 6B(3) disapplies s 41 to information obtained under s 6B(2), so staff must be aware that those disclosures are authorised.
• Tax officer disclosures: Taxation agencies must implement processes to allow tax officers to disclose information under s 78A(1) to the Commonwealth or Housing Australia to assist in determining eligibility for Help to Buy arrangements. Update privacy impact assessments and internal audit trails accordingly. Section 78A(2) states that s 80 does not apply to information obtained from a tax officer under s 78A(1); ensure staff know which secrecy obligations are disapplied and which remain in force.
• Documentation and evidentiary thresholds: For stamp duty exemptions (s 60AB(2)), ensure conveyancers and registries have clear checklists and certifications to show an instrument records or effects a change in interest due to an increased share percentage by a participant in a Help to Buy arrangement. Consider model forms or statutory declarations to establish the factual causal link needed for the exemption.

3. Follow Ministerial consultation and publication obligations

• Objecting and requiring extension: The Minister must give notice to the Commonwealth Minister if the State wishes to object to a matter under the Commonwealth Help to Buy Act; the same applies to withdrawing an objection (s 10(1), (4)). During the minimum consultation period the Minister may require an additional 15 business days (s 10(7)). Ensure the Minister’s office and departmental lawyers have a template notice and an internal timeline for considering matters and for lodging an objection or requesting an extension within the consultation period.
• Publication in the Gazette: After giving notice to the Commonwealth Minister, the Minister must ensure the notice is published in the Gazette “as soon as practicable” (s 10(2), (5), (8)(a)). Create an administrative workflow so notices are drafted, transmitted to the Government Printer or Gazette office, and published promptly. Although validity is not affected by failure to publish (s 10(9)), publication fulfils statutory obligations and promotes transparency.
• Record‑keeping: Maintain records of all notices given to the Commonwealth Minister, copies of Gazette publications, and any communications with the Commonwealth. These records will be relevant if later dispute or compliance questions arise.

4. Prepare for regulation and delegated decision‑making

• Monitor for regulations under s 11: The Governor may make regulations required to give effect to the Act, including delegations of discretionary decision‑making to the Minister or other specified bodies (s 11(2)(d)). Agencies should review draft regulations, prepare submissions where necessary, and be ready to revise internal delegations and procedural manuals in light of regulatory changes.
• Implementation guidance: The Act allows regulations to make saving and transitional provisions (s 11(2)(c)). Agencies should expect transitional directions and create checklists for legacy arrangements, including how to treat pre‑existing Help to Buy arrangements, how to apply new assessment rules to ongoing cases, and how to handle appeals and reconciliations.

5. Coordinate with Commonwealth counterparts

• Information exchange protocols: Given the authorisations to disclose information to the Commonwealth and to Housing Australia, State agencies should establish Memoranda of Understanding or operational protocols with Commonwealth bodies to govern how information will be requested, transmitted, secured and used. Although the Act authorises disclosure and disapplies certain State secrecy provisions, those protocols will be important to manage privacy risks and to ensure compliance with Commonwealth privacy obligations.
• Verification processes: Set up verification procedures to confirm when land was purchased under a Help to Buy arrangement and what interest, if any, the Commonwealth or Housing Australia holds. This will be necessary to apply the deeming rules in Schedule 1 correctly.

6. Advise private clients and service providers

• Conveyancers and lenders: Notify conveyancers, lenders and other transaction advisers about the duty exemption for increases in share percentage (s 60AB(2)) and the need to provide evidence that the land was purchased under a Help to Buy arrangement. Advise clients on steps to secure the exemption and on possible implications for mortgage documentation and registrations.
• Participants: People interested in participating in a Help to Buy arrangement should seek advice about how the Commonwealth Help to Buy Act (as adopted) interacts with State taxes and grants and about what information may be shared with the Commonwealth or Housing Australia under the Schedule.

7. Audit and compliance review

• Update audit programs to test whether revenue officers have excluded Commonwealth/Housing Australia interests correctly, whether disclosures to the Commonwealth were made under the authorised channels, and whether Gazette publication and Ministerial notice procedures were followed.
• Review privacy and data‑security controls for information shared externally.

In practical terms, compliance requires careful coordination across State revenue, grants, and legal branches; alignment with Commonwealth counterparts; timely monitoring of Commonwealth legislative activity; and revision of internal procedures, forms and IT systems to accommodate the statutory deeming, authorised disclosures, and potential delegated discretion under regulations.