Commonwealth Places (Mirror Taxes Administration) Act 1999

Definitions and the Act’s structure determine its legal mechanics. The key statutory concepts are defined in s 3 and then implemented across the parts that follow.

• Commonwealth place (s 3). The Act applies in relation to places in the State "acquired by the Commonwealth for public purposes". The Act’s operation depends on whether a place is a Commonwealth place at relevant times, and the Act contains procedural and evidentiary mechanisms for interrogating that fact (ss 8-11).
• Applied law and corresponding applied law (s 3). "Applied law" means provisions of a State taxing law that apply in relation to a Commonwealth place in accordance with the Commonwealth Act. A "corresponding applied law" in relation to a State taxing law is simply an applied law corresponding to the State taxing law. The Act uses these terms to distinguish between the State’s domestic taxing law and its mirror counterpart operating as Commonwealth law.
• State taxing law (s 3). This is defined as a State law that is a State taxing law within the meaning of the Commonwealth Act. Which State taxing laws are covered is therefore determined by reference to the Commonwealth Act; the present statute operates as an administrative overlay over those laws when applied to Commonwealth places.
• State authority (s 3). This is a broad definition that includes the Governor, Ministers, the Executive Council (s 3(a)), courts and judicial office‑holders (s 3(b)-(c)), bodies created under State law (s 3(d)), and officers and employees of those bodies (s 3(e)). The Act confers powers and functions on such authorities where the Commonwealth Act authorises it (s 7).
• Exclusion by s 52(i) of the Commonwealth Constitution. The Act repeatedly conditions the application of many of its machinery provisions on the corresponding State taxing law not being "excluded by section 52(i) of the Commonwealth Constitution" (see ss 8, 10, 12, 15). The Act therefore requires, as a threshold legal determination in many contexts, whether the particular State taxing law is within the scope of constitutional exclusion identified in s 52(i). The Act itself does not define s 52(i) but uses it as a legal boundary for its validation, savings and procedural rules.
• Modified operation (s 7A). Where there is a corresponding applied law, the State taxing law must be read and construed with any modifications necessary or convenient to enable (a) effective operation in conjunction with the corresponding applied law, and (b) a taxpayer to have a combined liability under both laws that is "as nearly as possible the same" as the liability would have been under State taxing law alone if the place were not a Commonwealth place (s 7A(1)(a)-(b)). Section 7A(2) further provides that, for events, states of affairs or transactions on or after 30 January 2001, these modifications prevail over amendments to State taxing law made by s 19 to the extent of inconsistency.
• Actions taken under corresponding applied law (s 7B). Section 7B relieves a person from being required to take duplicate actions under both a State taxing law and a corresponding applied law where (a) the corresponding applied law applies to the same event or transaction, (b) the person has already complied under the corresponding applied law, and (c) the Commissioner of State Revenue has sufficient information to carry out functions under the State taxing law or both laws (s 7B(1)). If those conditions are met, the Commissioner may proceed as if the person had taken whatever action is required under the State taxing law (s 7B(2)). This provides a concrete mechanism to avoid procedural duplication, subject to the Commissioner’s informational needs.
• Proceedings, evidence and validation (Pt 3 and Pt 4). The Act contains provisions to continue proceedings if a place is later found not to be a Commonwealth place (s 8), restrict objections based on duplicate proceedings (s 9), treat appeals as if brought under State taxing law where the State taxing law is not excluded by s 52(i) (s 10), treat certain certificates about land ownership as evidence (s 11), and validate acts purportedly done under applied law as having been done under the corresponding State taxing law when that State taxing law is not excluded by s 52(i) (s 12).
• Savings on change of status of a place (ss 13-14). The Act preserves rights, liabilities, penalties, investigations and proceedings when a place becomes or ceases to be a Commonwealth place, and treats the continued operation of the appropriate law as intended in relation to the place from the relevant time.
• Instruments and appropriation (ss 15-16). References in instruments to an applied law are to be treated as references to the corresponding State taxing law where that law is not excluded (s 15). Section 16 requires the Consolidated Fund to meet State liabilities to the Commonwealth to enable compliance with s 23(1) of the Commonwealth Act or under an arrangement made under s 5.
• Double jeopardy protection (s 17). Where an act or omission constitutes an offence under both State law and an applied law, punishment under the applied law prevents further punishment under State law for the same act or omission.
• Delegation and delegatus references. The Act uses authorised persons and delegations created under Commonwealth law for evidentiary certificates (s 11) and imports administrative structures from the Commonwealth Act. The term "authorised person" is defined with reference to section 139 of the Commonwealth Lands Acquisition Act 1989 (s 11(3)).

Taken together, these concepts make the Act an operational bridge between a State’s fiscal statutes and the mirror Commonwealth laws that apply to Commonwealth places. The bridge is conditional on arrangements under s 5 and subject to constitutional gatekeeping (s 52(i) references). The Act tries to reduce duplication and preserve continuity of rights and liabilities across changes in a place’s status, while leaving practical allocation of functions and fiscal liabilities to the s 5 arrangements and to regulatory and administrative practice.

The Act creates legal relationships and administrative obligations that affect several distinct groups. The statutory language identifies who is directly in its working path.

• State taxpayers and persons carrying on transactions in or connected with Commonwealth places. Any person whose liability, obligation or transaction engages a State taxing law that falls within the Commonwealth Act as an applied law is affected. They will face the practical question whether their actions are governed by a corresponding applied law as Commonwealth law, and whether compliance with that applied law discharges duplicate State requirements under s 7B. Taxpayers are also affected by s 7A, which may change how a State taxing law is read to produce a combined liability "as nearly as possible the same" as if no Commonwealth place status existed (s 7A(1)(b)).
• State authorities. The Act explicitly operates through State authorities, defined broadly to include the Governor, Ministers, the Executive Council, State courts and their office‑holders, bodies created under State law, and officers and employees of those bodies (s 3). Section 7 provides that, despite any State law, a State authority has any power, duty or function that the Commonwealth Act authorises or requires the authority to exercise or perform. State authorities are therefore the executors of the mirror‑tax regime in practice, and must operate in accordance with arrangements made under s 5.
• Commissioners and revenue administrators. The Commissioner of State Revenue is implicitly central. Section 7B specifically contemplates the Commissioner taking functions in relation to events or transactions as if a person had complied with State law where the person has complied with the corresponding applied law and the Commissioner has "sufficient information". This creates an evidential and administrative duty on revenue administrators to determine sufficiency of information and to act on actions taken under the corresponding applied law.
• Courts and litigants. State courts and persons engaged in proceedings involving applied laws or corresponding State taxing laws are affected by ss 8-10, which set rules for continuation of proceedings, restrict objections based on duplicate proceedings, and require appeals under an applied law to be dealt with as if they had been brought under the corresponding State taxing law where that law is not excluded by s 52(i). Courts must also receive and treat certificates of ownership of land from authorised persons as evidence under s 11.
• The Crown and State budget officers. The Act binds the Crown in right of the State (s 4). Section 16 directs that any liability of the State to pay money to the Commonwealth to enable it to comply with s 23(1) of the Commonwealth Act, and liabilities under a s 5 arrangement, must be met from the Consolidated Fund as appropriated. The State’s finance officers and budget process are therefore implicated where the State has financial commitments under the mirror tax arrangements.
• Instrument drafters and contract parties. Section 15 treats references in instruments to a law as an applied law as a reference to the corresponding State taxing law where it is not excluded by s 52(i). That affects how statutory instruments, contracts, leases, conveyancing documents and other writings that mention "applied law" will be interpreted, and places a drafting and interpretation consideration on those who prepare such documents.
• Persons subject to criminal enforcement. Section 17 prevents double punishment where an act or omission is an offence under both a State law and an applied law and the offender has already been punished under the applied law. Prosecutors and defendants must consider which jurisdiction acted first and whether punishment has already been imposed under the applied law.

Who pays and who decides, in practical terms: taxpayers and users of Commonwealth places may pay or bear compliance costs; the Commissioner of State Revenue and State authorities decide, administratively, whether sufficient information exists under s 7B to allow reliance on compliance with the corresponding applied law; the Governor, via arrangements with the Governor‑General (s 5) and potential regulation‑making via the Governor in Council (s 18), decides the high‑level allocation of powers and the detail of administrative implementation; and the courts decide disputed factual or legal questions, including whether a place is a Commonwealth place and whether a State taxing law is excluded by s 52(i). The Act explicitly reserves judicial power from s 5 arrangements by excluding arrangements that involve "the exercise of judicial power" (s 5), so the Governor’s arrangement power does not extend to reassigning judicial functions.

Concentrated benefits and diffuse costs can be inferred from the mechanics. Benefits concentrate on taxpayers who obtain reduced duplication where they may comply under a corresponding applied law and the Commissioner accepts that information is sufficient (s 7B). Burdens are diffused across administrative agencies and the State budget (s 16), and across taxpayers who may need to supply additional information to the Commissioner to avoid duplicative requirements (s 7B(1)(d)). The Act also imposes procedural burdens on courts and litigants where the status of a place is contested, requiring courts to transfer, continue or treat proceedings as State proceedings if the State taxing law is not constitutionally excluded (ss 8-10).

The Act sets out specific duties for State authorities, the Commissioner of State Revenue, taxpayers and others, and it creates rights and protections for affected parties. These are statutory duties and rights; many hinge on whether a State taxing law is excluded by s 52(i) of the Commonwealth Constitution.

Duties

• Governor to make arrangements (s 5). The Governor may make an arrangement with the Governor‑General in relation to the exercise or performance of non‑judicial powers, duties or functions by a State authority under an applied law. The Governor must also be able to agree the variation or revocation of such arrangements (s 6). The duty here is a political and administrative obligation to negotiate arrangements if the State wishes the mirror tax regime to operate.
• State authorities to perform authorised functions (s 7). "Despite any State law, a State authority has any power, duty or function that the Commonwealth Act authorises or requires the authority to exercise or perform." This creates an overriding statutory basis for State authorities to act under the mirror taxes regime when the Commonwealth Act authorises or requires them to do so.
• Modified reading of State taxing laws (s 7A). Where a corresponding applied law exists, a State taxing law "is to be read and construed with any modifications that are necessary or convenient" to enable effective operation in conjunction with the corresponding applied law and to produce combined liabilities that closely replicate liabilities had the place not been a Commonwealth place (s 7A(1)). This is a duty on interpreters of State taxing law, including revenue officers and courts, to apply modifying principles.
• Commissioner to treat compliance under corresponding applied law as sufficient where information is adequate (s 7B). Where the taxpayer has complied under the corresponding applied law and provided actions are the same under both laws, and the Commissioner has sufficient information, the Commissioner may treat the taxpayer as having taken the State law action (s 7B(1)-(2)). The Commissioner therefore has the duty of assessing sufficiency of information and may exercise functions accordingly.
• Evidence and certificate acceptance (s 11). Courts are required to accept certificates in writing from an authorised person as evidence of ownership or existence of rights in land, subject to being rebuttable (s 11(1)-(2)). The Act is explicit that such documents are to be "regarded as being such a certificate" unless contrary is proved.
• Regulation‑making (s 18). The Governor in Council may make regulations "to give effect to this Act", which places a duty on the executive to implement any regulations it makes.

Rights and protections

• Continuation of proceedings (s 8). If proceedings were commenced under an applied law and the court finds that the corresponding State taxing law is not excluded by s 52(i), the proceedings must be continued "as though they had been commenced under the State taxing law". This is a procedural right for litigants to have continuity of process without restarting proceedings.
• Protection against objections for duplicate proceedings (s 9). In proceedings under a State taxing law, an objection is not allowable merely because proceedings have been started or are pending under the corresponding applied law. This statutory rule protects the State’s actions from being easily derailed by duplication objections.
• Appeals treated as State appeals where appropriate (s 10). Appeals from judgments in proceedings under an applied law must be dealt with "as though" they had been brought under the State taxing law where the corresponding State taxing law is not excluded by s 52(i), thus preserving appeal rights under State law.
• Validation of acts (s 12). Acts purportedly done under applied law are "to be regarded as having been done under the State taxing law" where the corresponding State taxing law is not excluded by s 52(i). This protects the legal effect of administrative acts performed under the mirror regime.
• Savings when place status changes (ss 13-14). Rights, liabilities, penalties and continuing investigations are preserved when a place becomes, or ceases to be, a Commonwealth place. For example, when an applied law ceases to have effect because the place ceases to be a Commonwealth place, the corresponding State taxing law applies from that time (s 13(2)), and prior rights and penalties under the applied law are unaffected (s 13(3)-(5)). Conversely, where a State taxing law ceases to have effect because a place becomes a Commonwealth place, previous operation of the State taxing law and accrued rights and liabilities are preserved (s 14(2)-(4)).
• Double jeopardy protection (s 17). If an act or omission constitutes offences under both State law and an applied law, punishment under the applied law bars further punishment under State law. This is an express protection for persons punished under the mirror Commonwealth regime.

Practical operational duties

• Sufficiency of information (s 7B(1)(d)). Private parties who rely on compliance under a corresponding applied law to avoid duplicative action must ensure the Commissioner is given "sufficient information" about the event, state of affairs or transaction. The statute does not define "sufficient", leaving that as an administrative standard for the Commissioner and potentially a judicially reviewable decision.
• Documentary evidence and rebuttal (s 11(2)). Certificates of ownership are rebuttable; a party facing a certificate will have the onus to prove otherwise. That creates an evidentiary dynamic that attorneys should plan for.

Who decides: State authorities exercise duties authorised by the Commonwealth Act (s 7), the Governor negotiates arrangements (s 5), the Commissioner assesses information sufficiency (s 7B), and courts determine disputed facts and whether the State taxing law is excluded by s 52(i) for the purposes of ss 8, 10, 12 and 15. Fiscal responsibility lies with the State Treasurer and the Consolidated Fund process where liabilities to the Commonwealth arise (s 16).

The Act itself does not create new tax offences or penalties; rather, it provides the procedural and evidentiary framework by which State taxing laws and their applied law counterparts operate in relation to Commonwealth places. Enforcement and penalties therefore flow from the underlying State taxing laws and the corresponding applied laws as mirrored under the Commonwealth Act, but the Act contains specific rules that affect how penalties and enforcement operate across jurisdictional changes and concurrent regimes.

Validation and continuity of penalties

• Validation of acts and enforcement (s 12). Where something purports to have been done under a law as an applied law and the corresponding State taxing law is not excluded by s 52(i), that act is to be regarded as having been done under the State taxing law. Practically, this means enforcement steps taken under the applied law can be treated as if taken under the State taxing law for purposes such as asserting liabilities, issuing assessments, or initiating recovery where the State taxing law applies.
• Savings where places cease to be Commonwealth places (s 13). If an applied law ceases to have effect in relation to a place because the place ceases to be a Commonwealth place, the State taxing law applies from that time, and rights, obligations, liabilities, penalties, forfeitures, prosecutions and remedies under the applied law remain enforceable and may be continued or imposed (s 13(3)-(5)). This preserves the State’s ability to enforce penalties that accrued under a corresponding applied law once the State taxing law reasserts its operation.
• Savings where places become Commonwealth places (s 14). Conversely, if a State taxing law ceases to have effect because a place becomes a Commonwealth place, prior operation of the State taxing law and any accrued rights, liabilities and penalties are preserved (s 14(2)-(4)). This ensures enforcement actions that began under the State law can continue despite the later change of status.

Procedural aspects affecting enforcement

• Continuation and treatment of proceedings (ss 8-10). Proceedings commenced under an applied law must be continued as though they had been commenced under the State taxing law where the court is satisfied that the corresponding State taxing law is not excluded by s 52(i) (s 8). Courts must deal with appeals from proceedings under an applied law as if those proceedings were brought under the corresponding State taxing law in the relevant circumstances (s 10). Section 9 prevents an objection solely on the ground of duplicate proceedings. These rules limit procedural avenues to avoid enforcement by way of raising jurisdictional duplication as a bar.
• Certificates as evidence (s 11). Certificates in writing by an authorised person about land ownership or interests are admissible as evidence in proceedings under a State taxing law and are regarded as having been duly given unless the contrary is proved (s 11(1)-(2)). That reduces evidentiary friction when property ownership is a component of tax liability or enforcement proceedings.
• Double jeopardy (s 17). If an act or omission is an offence under both State law and an applied law and the offender has been punished under the applied law, the offender cannot be punished under State law for the same act or omission. This is an enforcement constraint: once punishment under the applied law has occurred, State prosecutors are barred from imposing further punishment for that same conduct.

Commissioner’s role in enforcement

• Reliance on corresponding applied law compliance (s 7B). Section 7B(2) allows the Commissioner of State Revenue to "carry out his or her functions in relation to the event, state of affairs or transaction as if the person had taken whatever action is required or permitted under the State taxing law" where the person has complied under the corresponding applied law and the Commissioner has sufficient information. That enables the Commissioner to take enforcement steps (for example, issue adjustments or assessments) without requiring taxpayers to duplicate filings, provided the Commissioner’s information needs are met.

Fiscal enforcement and appropriation

• Appropriation for State liabilities (s 16). Any liability of the State to pay money to the Commonwealth to enable the Commonwealth to comply with s 23(1) of the Commonwealth Act, or any liability under a s 5 arrangement, is to be met from the Consolidated Fund. Enforcement of recovery of those State liabilities will therefore be anchored in usual public finance processes.

Practical enforcement risks and implementation issues

• Uncertainty about "sufficient information" in s 7B(1)(d) may delay reliance on corresponding applied law compliance, prompting revenue officers to request additional information before proceeding; conversely, premature reliance could compromise future assessments if the information proves inadequate.
• The Act places evidentiary weight on certificates (s 11), but because certificates are rebuttable, litigants may mount factual challenges, leading to contested trials on ownership or status of land that underpins tax liabilities.
• Where separate prosecutions or administrative penalties exist across the State and the applied law, careful sequencing matters because s 17 will prevent a State punishment if the applied law has already punished the offender.

The Act leaves the content and level of penalties to the underlying State taxing laws and to the corresponding applied laws under the Commonwealth Act. It creates procedural certainty to the extent it validates acts and provides for continuation of proceedings, and it imposes limits on double punishment. Enforcement practice will therefore depend on how revenue authorities, the Commonwealth and the State implement arrangements under s 5 and apply s 7B and the savings and validation provisions in Parts 3 and 4.

The Act is an interstitial statute: it operates by reference to State taxing laws and the Commonwealth Act, and by repeatedly invoking s 52(i) of the Commonwealth Constitution as a constitutional boundary. The Act’s effect therefore depends on its interaction with multiple legal layers.

Interaction with the Commonwealth Places (Mirror Taxes) Act 1998 (the Commonwealth Act)

• The Act repeatedly defines applied law and State taxing law by reference to the Commonwealth Act (s 3: "applied law means the provisions of a State taxing law that apply in relation to a Commonwealth place in accordance with the Commonwealth Act"; "State taxing law means a State law that is a State taxing law within the meaning of the Commonwealth Act"). Consequently, the Commonwealth Act determines which State taxing laws are mirrored and how the applied law regime operates. Section 7 of this Act gives State authorities the powers, duties and functions that the Commonwealth Act authorises or requires them to exercise. Any operational detail that flows from the Commonwealth Act therefore becomes legally effective in State practice through the combination of the Commonwealth Act and this mirror‑tax administration Act.
• Arrangements under s 5 are with the Governor‑General and relate to powers, duties or functions the Commonwealth Act contemplates. The endnotes emphasise that the operation of this Act depends on the making of an arrangement under s 5 and the corresponding section of the Commonwealth Act (Endnotes, Explanatory Details). The State’s practical operation of applied laws will therefore be shaped by the bilateral arrangement and by s 9 of the Commonwealth Act (as referenced in the endnotes).

Constitutional interaction: s 52(i) of the Commonwealth Constitution

• The Act conditions many of its crucial operational rules on whether the corresponding State taxing law is "not excluded by section 52(i) of the Commonwealth Constitution" (see, for example, ss 8, 10, 12, 15). That phrase operates as a legal gate. Where a State taxing law is "excluded" by s 52(i), the Act’s validation, substitution, continuation and instrument‑interpretation provisions do not operate for that law. The Act does not itself interpret s 52(i); courts must determine whether the particular State taxing law is constitutionally excluded. Thus constitutional litigation or judicial determinations about s 52(i) will directly affect the scope of the Act’s operation.

Interaction with State taxing laws

• The Act modifies the reading of State taxing laws where there is a corresponding applied law (s 7A), placing an interpretive duty on courts and revenue administrators. Where the State taxing law applies to events on or after 30 January 2001, the s 7A modifications prevail over amendments made by s 19 to the extent of inconsistency (s 7A(2)). That cross‑reference indicates the Act can alter the operation of State taxing laws in particular historical periods, thereby affecting how those laws are applied.
• Provisions that treat actions under applied laws as actions under the State taxing law (s 12) and that require continuance of proceedings as though commenced under State taxing law (s 8) generate a legal equivalence between proceedings taken under the mirror Commonwealth law and domestic State law, subject to the s 52(i) exclusion.

Interaction with procedural and evidentiary rules

• Section 11 creates a statutory evidentiary certificate from an "authorised person" (a delegate under s 139 of the Commonwealth Lands Acquisition Act 1989) that is presumed valid unless the contrary is proved. That creates a statutory evidentiary shortcut that interacts with normal State rules of evidence and burden of proof in proceedings about Commonwealth place status or ownership interests.

Interaction with fiscal and appropriation rules

• Section 16 requires the Consolidated Fund to meet State liabilities to the Commonwealth to enable compliance with s 23(1) of the Commonwealth Act, or liabilities under a s 5 arrangement, with appropriation "to the necessary extent". That imports the usual appropriation regime and public finance processes, and may interact with State budgetary constraints.

Interaction with other State laws and instruments

• Section 15 makes references to an applied law in an instrument operate as references to the corresponding State taxing law where that law is not excluded by s 52(i). That provision interacts with statutory interpretation rules, contracts, conveyancing instruments and any other instruments that refer to applied laws. It ensures continuity of reference across the mirror legal regime.

Regulations and executive practice

• The Governor in Council may make regulations under s 18 to give effect to the Act. Any such regulations will interact with existing State administrative and taxation regulations, potentially filling out administrative procedures, forms, delegations and compliance processes.

Amendments and repeal history

• The endnotes record later amendments that change how the Act functions in practice (for example, the insertion of ss 7A and 7B by the State Taxation and Financial Legislation Amendment Act 2013), and the repeal of Part 6 by the Statute Law Revision Act 2007. Those amendments interact with the existing texts of State taxing laws and alter interpretive outcomes to the extent described in s 7A(2). Practitioners must therefore read the Act together with the amendment history in the endnotes.

Operational interactions that create trade‑offs

• The interplay between s 7B’s duplication relief and the Commissioner’s threshold of "sufficient information" creates an administrative trade‑off: taxpayers obtain procedural relief if they have complied under the corresponding applied law, but the Commissioner must be satisfied with the information given before treating that compliance as sufficient. This creates an interaction between taxpayer administrative convenience and the State’s compliance assurance needs.
• The double jeopardy protection in s 17 interacts with prosecutorial choices in both jurisdictions. If the Commonwealth acts first and punishes, the State cannot then punish for the same conduct; conversely, if the State acts first, the Commonwealth’s mirror offence regime may be affected by the sequence of enforcement. The Act does not resolve which jurisdiction should take priority; that remains a function of arrangements and prosecutorial practice.

In short, the Act is a connective statute that operates only in relation to other laws. It embeds the Commonwealth Act at the core of its operation, uses s 52(i) of the Commonwealth Constitution as a constitutional gate, modifies State taxing laws for co‑operation with applied laws (s 7A), and delegates practical administrative roles to State authorities and the Commissioner (s 7, s 7B). Practitioners must therefore read the Act in conjunction with the Commonwealth Act, the particular State taxing law in question, any s 5 arrangement, and the constitutional line‑drawing under s 52(i).

The Act’s endnotes record three discrete amendment events that materially changed its operation, plus a repeal of Part 6 and amendment or repeal of the Schedule. The Act as provided contains in‑text notes that ss 7A and 7B were inserted by the State Taxation and Financial Legislation Amendment Act 2013 (No. 69/2013), and that Part 6 (Heading and s 19) was repealed by the Statute Law Revision Act 2007 (No. 28/2007). The endnotes provide a short table identifying the amending Acts and commencement details. The changes recorded in the text and endnotes are as follows.

• Statute Law Revision Act 2000 (No. 74/2000). The endnote records that the Statute Law Revision Act 2000 (assent 21 November 2000) made amendments to the schedule (Sch. 1 item 23) and that commencement was on 8 June 1999 by s 2(2)(e) of that amending Act. The precise schedule changes to the Act are not reproduced in the main text; the endnote records the amending instrument and the narrow purpose of the amendment as a statute law revision measure.
• Statute Law Revision Act 2007 (No. 28/2007). This Act repealed Part 6 (Heading and s 19) by s 3 (Schedule item 11) and the schedule was repealed as noted. The endnote states the assent date as 26 June 2007 and commencement on 27 June 2007 for that repeal. The main text also notes that the Schedule was amended by the 2000 Act and subsequently repealed by the 2007 Act.
• State Taxation and Financial Legislation Amendment Act 2013 (No. 69/2013). This Act inserted ss 7A and 7B into the Act, with the in‑text marginal note "S. 7A inserted by No. 69/2013 s. 3." and "S. 7B inserted by No. 69/2013 s. 3." The endnote records the assent date 19 November 2013 and the commencement date as 30 January 2001 by s 2(2), which likely reflects a savings or transitional operation for certain provisions; the in‑text note to s 7A includes a specific temporal rule referring to "events, states of affairs or transactions that occurred, existed or were entered into on or after 30 January 2001", and states that the modifications under s 7A prevail over amendments made by s 19 to the extent of inconsistency (s 7A(2)). The endnotes indicate the current state of the provisions relative to the amendments.

Mechanically significant outcomes of those amendments as reflected in the text

• Addition of s 7A. Section 7A introduced an express interpretive modification rule for State taxing laws where there is a corresponding applied law. It requires State taxing laws to be read with modifications necessary or convenient to enable effective operation alongside corresponding applied laws and to produce combined liabilities that replicate as closely as possible the liability that would have arisen had the place not been a Commonwealth place (s 7A(1)(a)-(b)). Section 7A(2) creates a temporal priority for these modifications over earlier amendments made by s 19 for events on or after 30 January 2001.
• Addition of s 7B. Section 7B creates a statutory mechanism to avoid duplicative action by taxpayers who have complied under corresponding applied laws, provided the Commissioner of State Revenue has sufficient information. It grants the Commissioner the power to treat such compliance as satisfying the State taxing law requirements for the event, state of affairs or transaction (s 7B(1)-(2)). This reduces administrative duplication but places an evidential burden on the Commissioner to determine sufficiency.
• Repeal of Part 6 (s 19 and Schedule). The repeal removed the provisions previously contained in Part 6 and the Schedule; the main text notes the repeal and the endnotes provide dates. The text's earlier note to s 7A referenced s 19 as having amended several named Acts (Debits Tax Act 1990, Financial Institutions Duty Act 1982, Pay-roll Tax Act 1971, Stamps Act 1958 and Taxation Administration Act 1997). The repeal of Part 6 suggests a restructuring or consolidation that followed, with the 2013 amendments subsequently adjusting interpretive and operational details.

Commencement history

• The Act’s s 2 specifies immediate commencement on Royal Assent for all of the Act "except Part 6 and the Schedule", which were to come into operation on a day to be proclaimed on or after an arrangement under s 5. The endnotes record the actual commencement dates: all of the Act except Part 6 and Schedule commenced on 8 June 1999 (s 2(1)); Part 6 and the Schedule commenced on 30 January 2001 as per the Special Gazette entry. Subsequent repeal of Part 6 removed s 19 and any schedule content. The explanatory detail in the endnotes explains that the operation of the Act and the Commonwealth Act depends on a s 5 arrangement and that, as soon as an arrangement is made, the State taxing laws are "taken to have always applied" in relation to Commonwealth places in the State, subject to preventing liabilities for tax for things before 6 October 1997 (Endnotes, Explanatory Details).

Practitioner implications

• The 2013 insertions (ss 7A and 7B) materially affect interpretive duties and administrative practice. Reading the Act requires attention to the amendment history and to the precise temporal contingencies in s 7A(2). Practitioners should consult the Act as amended and the endnotes for the precise legislative history pertaining to any particular transactional date.
• Repeal of Part 6 means any former provisions in that Part are no longer available; the endnotes note the repeal but do not reproduce the repealed text, so practitioners must consult historical versions if relevant.

The Act’s endnotes provide the authoritative legislative history recorded in the State source material. The in‑text marginal notes indicating who inserted ss 7A and 7B serve as cross‑references to the amending statutes identified in the endnotes. For any detailed historical question about earlier versions, practitioners should consult the archived statute texts and the schedules of the amending Acts referenced in the endnotes.

The statute as supplied does not list judicial interpretations or cases. The text itself names no cases, and the endnotes contain only legislative amendment and commencement material and an explanatory detail that references arrangements required under s 5 and s 9 of the Commonwealth Act. Therefore, no litigation history appears in the source material provided.

Despite the absence of recorded cases in the Act text, the Act contains multiple provisions that create litigation‑relevant questions likely to attract judicial attention in practice; the Act itself supplies the procedural and evidentiary rules courts must apply. Key litigation touchpoints that practitioners should expect, drawn from the Act, include:

• Whether a place is a Commonwealth place. Sections 8-11 presuppose litigation where the factual status of a place is contested. Section 11 permits a certificate from an "authorised person" to be accepted as evidence of ownership or existence of rights in land unless the contrary is proved. Disputes about Commonwealth place status and land ownership will be central to litigation about whether applied laws or State taxing laws govern a matter.
• Determination of whether the corresponding State taxing law is "excluded by section 52(i) of the Commonwealth Constitution". Sections 8, 10, 12 and 15 condition the Act’s continuation, validation and instrument interpretation provisions on the State taxing law not being excluded by s 52(i). Courts will be asked to determine whether a particular State taxing law is constitutionally "excluded" under s 52(i), a legal question that is foundational to whether the Act’s protections and validations apply.
• Procedural continuation of proceedings. Section 8 requires courts to continue proceedings commenced under an applied law as though they had been commenced under the State taxing law where the corresponding State taxing law is not excluded by s 52(i). Judicial tasks include integrating existing records, preserving rights of appeal, and determining any necessary procedural adjustments. Section 10 similarly requires appeals to be treated as though they arise under State law where the s 52(i) condition is met.
• Evidentiary weight and rebuttal of certificates. Section 11(1) creates a prima facie right to treat a certificate from an authorised person as evidence of ownership or rights in land, and s 11(2) presumes such a certificate to have been duly given unless the contrary is proved. Courts will therefore adjudicate the sufficiency of any evidence produced to rebut such certificates.
• Interpretation and modification of State taxing laws. Section 7A requires State taxing laws to be read with modifications to enable effect together with a corresponding applied law and to achieve combined liabilities "as nearly as possible the same" as they would have been absent Commonwealth place status. Courts will have to apply these interpretive modifications when resolving substantive tax disputes, and may be called on to determine how far modifications can go before altering the essential character of a State taxing law.
• Sufficiency of information for reliance on compliance under applied law. Section 7B makes the Commissioner’s satisfaction about "sufficient information" a precondition for treating compliance under a corresponding applied law as satisfying State law requirements. Courts may be asked to review administrative decisions on sufficiency or to apply judicial review principles if administrative discretion over information sufficiency is exercised.
• Application of double jeopardy protection. Section 17 bars additional State punishment where the offender has already been punished under the applied law. Litigation may arise about whether a particular punishment qualifies as a punishment under the applied law and whether it covers the same act or omission.

Because the Act does not itself set penalties or create discrete substantive tax liabilities, litigation will usually engage the underlying State taxing laws, the Commonwealth Act, the constitutional boundary of s 52(i) and administrative decisions under s 7B. Courts will need to harmonise these layers when resolving disputes.

Absent case law in the source text, practitioners should identify and review relevant State and Commonwealth jurisprudence on mirror‑tax regimes, the meaning and extent of s 52(i) exclusions, and administrative law authorities on "sufficient information" standards when advising clients. The Act’s provisions give courts clear statutory tasks, but the actual legal outcomes in contested cases will depend on how courts apply the constitutional and administrative law principles to the facts in each dispute.

The statute contains several technical features and contingencies that can produce practical traps for practitioners, revenue officers, taxpayers and contracting parties. Below are specific "gotchas" drawn from the Act’s text.

1. Dependence on a s 5 arrangement. The Act’s operation is contingent on an arrangement between the Governor and the Governor‑General under s 5. The explanatory endnote emphasises that, until an arrangement is made, the intended machinery will not operate, and once an arrangement is made the State taxing laws are "taken to have always applied" in relation to Commonwealth places subject to the historical carve‑out for matters before 6 October 1997 (Endnotes, Explanatory Details). Practitioners must verify whether a s 5 arrangement exists and its terms before assuming the Act’s provisions are in force for a particular place.

2. Constitutional gating by s 52(i). Multiple operative provisions are conditioned on the corresponding State taxing law "not being excluded by section 52(i) of the Commonwealth Constitution" (see ss 8, 10, 12, 15). This phrasing makes the application of the Act dependent on a constitutional determination for each State taxing law and each factual scenario. Do not assume the Act’s validation and continuation rules automatically apply; first check the s 52(i) question.

3. "Sufficient information" is undefined (s 7B(1)(d)). Section 7B relieves taxpayers from duplicate actions only if the Commissioner has "sufficient information" about the event, state of affairs or transaction. There is no statutory definition of "sufficient". The risk is twofold: taxpayers may assume compliance under the applied law suffices, only to find the Commissioner requires more; or revenue officers may accept inadequate information and later face disputes. Practitioners should plan for evidentiary prudence: where duplication is relied upon to be avoided, obtain contemporaneous confirmation from the Commissioner in writing about sufficiency where possible.

4. Rebuttable certificates carry presumptive weight (s 11). Certificates from "authorised persons" about land ownership are admissible and "to be regarded" as duly given unless the contrary is proved (s 11(2)). While this reduces evidentiary friction, it creates a potential surprise for parties who assume ownership facts are contested. If a party challenges a certificate, be prepared with documentary counter‑evidence; absent that, the court will treat the certificate as establishing the facts alleged.

5. Timing and historical cut‑offs. Section 7A(2) refers to events, states of affairs or transactions on or after 30 January 2001 and gives the s 7A modifications precedence over earlier amendments made by s 19 to the extent of inconsistency. Transactions around that date may attract complex transitional rules. The explanatory endnotes also note a non‑liability carve‑out for things before 6 October 1997 if the arrangement is later made. Practitioners must check applicable dates and transitional provisions carefully; failing to do so can cause misapplication of liability rules.

6. Double jeopardy sequencing issues (s 17). Section 17 prevents State punishment if an offender has been punished under the applied law. The "gotcha" here is sequencing: prosecution or administrative penal action in one jurisdiction may immunise a person from acting in the other jurisdiction. Parties and prosecutors must coordinate to determine who will act first, and defence counsel should be alert to prior punishments under applied law that may block State sanctions.

7. Instruments referencing "applied law" may be read as State law references (s 15). If an instrument refers to a law "as an applied law" and the corresponding State taxing law is not excluded by s 52(i), the reference has effect as if to the State taxing law. This can alter contractual or document interpretation unexpectedly. Conveyancers and drafters should avoid ambiguous references to "applied law" and should expressly identify which statutory regime is intended.

8. Appropriation implications (s 16). Liabilities of the State to the Commonwealth to enable compliance with s 23(1) of the Commonwealth Act, or under s 5 arrangements, are to be met from the Consolidated Fund. The practical "gotcha" is that State liabilities arising under arrangements are public finance obligations; the executive must budget and appropriate for them. Councils, agencies and departments must not assume the Commonwealth will fund such liabilities.

9. Delegation dependencies for certificates (s 11(3)). The definition of "authorised person" in s 11(3) depends on delegation under section 139 of the Commonwealth Lands Acquisition Act 1989. If the relevant delegation is not in place or is defective, the certificate may not enjoy the statutory presumption. Check delegation records before relying on certificates.

10. The Act does not create new substantive tax rules. It is a procedural and interpretive overlay. Practitioners who expect substantive tax reliefs, exemptions or altered tax bases from this Act alone will be disappointed; the substantive content of liabilities remains in the State taxing laws and the Commonwealth Act.

11. Regulatory discretion. The Governor in Council may make regulations to give effect to the Act (s 18). Absent regulations, administrative practice may vary. Practitioners should check for any regulations that implement forms, procedural steps or delegations before advising clients.

12. No direct statement of judicial power transfer. Section 5 excludes arrangements that involve "the exercise of judicial power", so do not assume the Governor’s arrangement power authorises transfer of judicial functions. Judicial functions remain within the courts unless and until lawfully assigned in accordance with constitutional limits. This can affect how disputes over liability are resolved.

13. Records and confirmations. Because s 7B allows reliance on compliance under the corresponding applied law only if the Commissioner has sufficient information, taxpayers should keep contemporaneous records of any compliance with the applied law and, where possible, obtain written confirmation from the Commissioner that reliance will be accepted.

These "gotchas" are concrete consequences of the Act’s textual mechanics. They highlight the importance of: checking the existence and content of s 5 arrangements; identifying whether the specific State taxing law is constitutionally excluded by s 52(i); maintaining documentary records; and proactively coordinating with revenue authorities to secure certainty about sufficiency of information and the treatment of procedural compliance.

Compliance under this Act requires coordinated action by taxpayers, practitioners, State authorities and revenue officers. The Act repeatedly links compliance outcomes to (a) whether a s 5 arrangement is in place, (b) whether the particular State taxing law is constitutionally excluded by s 52(i), and (c) whether the Commissioner has sufficient information if a taxpayer seeks to avoid duplicate actions under s 7B. The following practical checklist is grounded in the text.

1. Confirm whether a s 5 arrangement exists and its terms (s 5)

• Before advising that mirror tax rules operate, verify whether the Governor has made an arrangement with the Governor‑General under s 5. The Act’s mechanics, including the adoption of applied laws as mirror Commonwealth law, depend on that arrangement. The endnotes caution that the operation of this Act depends on the arrangement (Explanatory Details). Obtain a copy of the arrangement and any variations under s 6 and record its commencement date.

2. Determine Commonwealth place status for the location(s) involved (ss 3, 8-11)

• Establish whether the relevant place is a Commonwealth place (defined in s 3). If the status is contested, anticipate litigation triggers under ss 8-10 and prepare to rely on or challenge certificates of ownership under s 11. If relying on a certificate under s 11, ensure it is from an "authorised person" as defined in s 11(3) and keep a copy in your file. If challenging a certificate, assemble counter‑evidence establishing the contrary.

3. Check whether the relevant State taxing law is excluded by s 52(i)

• Several operative provisions apply only where the corresponding State taxing law is "not excluded by s 52(i) of the Commonwealth Constitution" (see ss 8, 10, 12, 15). Seek legal advice on the constitutional position for the specific State taxing law at issue. If there is uncertainty, document the risk and consider seeking declaratory relief or interlocutory rulings.

4. Where a corresponding applied law applies, assess whether to act under the applied law or the State taxing law (s 7B)

• If a corresponding applied law applies and you have complied with it, identify the specific actions that the State taxing law would otherwise require. Under s 7B, you may not have to duplicate such actions provided: a) the actions are the same under both laws (s 7B(1)(b)); b) you have taken the action under the corresponding applied law (s 7B(1)(c)); and c) the Commissioner of State Revenue has "sufficient information" (s 7B(1)(d)).
• Practical step: when complying with the applied law, record exactly what you do and contemporaneously provide the Commissioner with the documents and data you think will constitute "sufficient information". Ask for written confirmation from the Commissioner if you plan to rely on s 7B to avoid duplication. Where possible, secure a binding administrative determination or formal confirmation of sufficiency.

5. Documentation and records management

• Keep complete records of all filings and compliance actions taken under corresponding applied laws. The Commissioner’s assessment of sufficiency will depend on documentary evidence. For land matters, retain certificates, transfer documents and correspondence with Commonwealth authorities, and retain any certificates received from authorised persons under s 11.

6. Prepare for evidentiary dynamics in disputes (s 11)

• If a dispute arises, be ready to meet the evidentiary presumption afforded to certificates under s 11(2). If you are the holder of a certificate, make sure it complies with the delegation requirements under the Commonwealth Lands Acquisition Act. If you intend to rebut a certificate, assemble robust proof of ownership or title to counter the statutory presumption.

7. Watch for timing and transitional rules (s 7A(2) and explanatory endnotes)

• For events, states of affairs or transactions on or after 30 January 2001, s 7A(2) provides that modifications to State taxing laws under s 7A prevail over the amendments made by s 19 to the extent of inconsistency. Confirm which legal regime applies to the relevant dates for the taxpayer’s transaction. For historical transactions, check the endnote’s caveat about non‑liability before 6 October 1997.

8. Be alert to double jeopardy constraints (s 17)

• If enforcement action has occurred under an applied law for an act or omission, the State cannot then punish the offender under State law for the same act (s 17). If you are advising a client who faces action in both jurisdictions, document prior punishments and advise about the potential bar to further State punishment. Coordinate defence strategy accordingly.

9. Check instruments and contracts for "applied law" references (s 15)

• Where instruments refer to a law "as an applied law", confirm whether the corresponding State taxing law is not excluded by s 52(i). If not excluded, the reference will be treated as one to the State taxing law (s 15). To avoid ambiguity, amending instruments or new contracts should explicitly state which statutory regime is intended and include fallback positions.

10. Coordinate with the Commissioner and State authorities

• Revenue administration under the mirror regime requires cooperation. Where possible, engage early with the Commissioner to discuss processes, information needs, and whether actions under the corresponding applied law will be accepted as satisfying State law requirements under s 7B. State authorities must also ensure delegations and administrative arrangements are in place to perform any functions authorised by the Commonwealth Act (s 7).

11. Monitor regulations and executive instruments (s 18)

• The Governor in Council can make regulations to give effect to the Act. Check for any regulations that prescribe forms, procedures, delegations or other implementation details. Absent explicit regulations, document informal administrative practice with the relevant State authority.

12. Budget and appropriation planning (s 16)

• If the State is to pay money to the Commonwealth to enable compliance with s 23(1) of the Commonwealth Act or under arrangements, ensure appropriation lines and contingent liabilities are considered in budget planning. Obtain instructions from finance officers regarding the treatment of such liabilities and ensure records of actual payments are kept.

13. Litigation readiness

• If a litigation risk exists concerning whether a place is a Commonwealth place, whether the State taxing law is excluded by s 52(i), the sufficiency of information for s 7B, or the admissibility or rebuttal of certificates under s 11, prepare pleadings and evidence addressing those specific statutory issues. Consider interlocutory relief to obtain judicial clarification where necessary.

14. Drafting and transaction planning

• When structuring transactions involving Commonwealth places, anticipate how s 7A’s modification rule will be applied and whether the combined liability objective (liability as nearly as possible the same as otherwise) will affect the tax treatment. Include contractual protections and representations on place status, risk allocation for additional tax liabilities, and indemnities for costs arising from retroactive application where relevant.

15. Keep amendment history under review

• Because ss 7A and 7B are later insertions that altered interpretive and procedural duties, ensure your advice references the current text of the Act and the amendment history set out in the endnotes.

In sum, compliance is a mix of confirmatory steps (does a s 5 arrangement exist, is the State taxing law excluded by s 52(i)), proactive administrative practice (document actions under corresponding applied law, seek Commissioner confirmation), and transactional safeguards (explicit contract drafting, budget appropriation). The Act aims to reduce duplication but puts the practical burden on taxpayers to ensure the Commissioner has sufficient information and on State authorities to execute arrangements and make necessary regulations.