{"id":"C2004A00460","name":"A New Tax System (Goods and Services Tax Imposition—Customs) Act 1999","slug":"a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999","collection":"act","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":"73 of 1999","makingDate":null,"administeringDepartment":null,"currentVersion":{"id":38508,"registerId":"commonwealth-C2004A00460-1775056115792","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Short title [see Note 1]","content":"#### 1 Short title \\[see Note 1\\]\n\n  This Act may be cited as the A New Tax System (Goods and Services Tax Imposition—Customs) Act 1999.","sortOrder":0},{"sectionNumber":"2","sectionType":"section","heading":"Commencement","content":"#### 2 Commencement\n\n  This Act commences on 1 July 2000.","sortOrder":1},{"sectionNumber":"3","sectionType":"section","heading":"Imposition","content":"#### 3 Imposition\n\n  (1) The tax that is payable under the GST law (within the meaning of the A New Tax System (Goods and Services Tax) Act 1999) is imposed by this section under the name of goods and services tax (GST).\n  (2) This section imposes GST only so far as that tax:\n    (a) is a duty of customs within the meaning of section 55 of the Constitution; and\n    (b) is not imposed by the A New Tax System (Goods and Services Tax Imposition (Recipients)—Customs) Act 2005.","sortOrder":2},{"sectionNumber":"4","sectionType":"section","heading":"Rate","content":"#### 4 Rate\n\n  The rate of goods and services tax payable under the A New Tax System (Goods and Services Tax) Act 1999 is 10%.","sortOrder":3},{"sectionNumber":"5","sectionType":"section","heading":"Act does not impose a tax on property of a State","content":"#### 5 Act does not impose a tax on property of a State\n\n  (1) This Act does not impose a tax on property of any kind belonging to a State.\n  (2) Property of any kind belonging to a State has the same meaning as in section 114 of the Constitution.","sortOrder":4}],"analysis":{"summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Act remains tightly focused on its original purpose: imposing GST as a customs duty at the constitutionally required rate of 10%. The only notable addition over time is the carve-out referencing the 2005 Recipients—Customs Act, which refined rather than expanded the scope by allocating responsibility for a specific subset of customs-related GST to a separate instrument."},"complexity_factors":["Requires understanding of Australian constitutional law, specifically sections 55 and 114 of the Constitution, to fully appreciate the Act's purpose","The Act is deliberately narrow and technical — it only operates within a specific constitutional category ('duty of customs'), requiring cross-referencing with other related Acts","Interaction with a companion Act (the Recipients—Customs Act 2005) creates a split imposition framework that is not self-explanatory","The term 'GST law' is defined by reference to a separate Act, requiring cross-referencing"],"plain_english_summary":"## GST on Imported Goods — The Constitutional Machinery\n\nThis short Act is one of several pieces of legislation that together make the **Goods and Services Tax (GST) system work legally in Australia**.\n\n### What it does\nIt formally **imposes GST** (the 10% tax you pay on most goods and services) specifically on **imported goods crossing the Australian border** — what the Constitution calls a \"duty of customs.\" Think of it as the legal switch that turns on GST at the border.\n\n### Why does it exist separately?\nAustralia's Constitution requires that different types of taxes be imposed by **separate Acts of Parliament**. Because GST on imports technically qualifies as a customs duty under the Constitution, it needs its own dedicated law — it can't just be bundled into the main GST Act.\n\n### Who does it affect?\n- **Anyone importing goods into Australia** — businesses or individuals who bring goods across the border will pay GST under the authority of this Act.\n- **State governments** are specifically **exempt** — the Act cannot impose GST on property belonging to a State, as required by the Constitution.\n\n### The key numbers\n- **Rate: 10%** — the standard GST rate applies.\n- **Start date: 1 July 2000** — when GST was first introduced in Australia.\n\n### Bottom line\nThis Act is largely invisible in everyday life, but it is an essential constitutional building block that gives the federal government the legal authority to charge you GST when goods enter Australia."},"issue_detection":{"absurdities":[{"type":"circular_definition","section":"3(1)","severity":"medium","reasoning":"Section 3(1) states it imposes tax that 'is payable under the GST law'. Payability presupposes valid imposition, yet the imposition here references pre-existing payability as its foundation. The tax cannot be payable before it is imposed, yet the drafting implies it already is. This is a common but genuine logical circularity in Australian GST imposition architecture, relying on the companion GST Act to define liability while this Act purports to be the constitutional instrument of imposition.","confidence":0.72,"description":"Circular imposition structure: the section imposes tax that is 'payable under the GST law' — but the tax is only payable because it is imposed. The imposition purports to impose something that already exists as payable, creating a logical bootstrap problem."},{"type":"retroactive_impossibility","section":"3(2)(b)","severity":"medium","reasoning":"The A New Tax System (Goods and Services Tax Imposition (Recipients)—Customs) Act 2005 was enacted six years after this 1999 Act. Section 3(2)(b) as it currently reads excludes imposition where the 2005 Act applies. This carve-out could not have been in the original 1999 text — it must have been inserted by amendment — yet no amendment notation appears in the provided text. If read as original 1999 drafting, it references a non-existent Act, which is a logical impossibility. If it is an amendment, the absence of annotation creates a misleading legislative instrument.","confidence":0.85,"description":"A 1999 Act carves out provisions of a 2005 Act that did not exist at the time of enactment, creating a temporal absurdity where the original Act anticipates and defers to future legislation by reference at the time of royal assent."},{"type":"other","section":"4","severity":"medium","reasoning":"This is a Customs imposition Act — its constitutional role under s.55 of the Constitution is solely to impose the customs duty characterisation of GST. However, Section 4 sets the GST rate broadly under the GST Act 1999 without limiting that rate-setting to the customs component. If read literally, three parallel imposition Acts (Customs, Excise, and General) each purport to set the same 10% rate for the whole of GST, creating redundant and potentially conflicting rate-setting provisions. If any one of these Acts were amended to a different rate, the rate applicable to the customs component would be ambiguous.","confidence":0.78,"description":"Section 4 purports to set the rate of GST payable under the A New Tax System (Goods and Services Tax) Act 1999, yet that Act itself contains its own rate provisions. This Act, an imposition instrument of constitutionally limited scope (customs duties only), is setting a rate for the entirety of GST, exceeding its logical and potentially constitutional remit."}],"contradictions":[{"severity":"low","section_a":"3(1)","section_b":"3(2)(b)","confidence":0.65,"description":"Section 3(1) broadly imposes GST under this Act, while section 3(2)(b) carves out any GST imposed by the 2005 Recipients—Customs Act. The logical tension is that 3(1) asserts imposition, and 3(2) immediately qualifies it by reference to another Act's imposition, meaning this Act's imposition is partially contingent on and subordinate to a later Act, undermining the self-contained nature of the imposition."},{"severity":"medium","section_a":"4","section_b":"3(2)","confidence":0.75,"description":"Section 4 sets a rate for GST payable under the GST Act 1999 in its entirety, while section 3(2) explicitly limits this Act's imposition to only that portion of GST which is a customs duty and not covered by the 2005 Act. There is a contradiction between the narrow scope of imposition in s.3(2) and the apparently unlimited rate-setting in s.4, which on its face applies to all GST not merely the customs-characterised portion."},{"severity":"low","section_a":"5(1)","section_b":"3(1)","confidence":0.58,"description":"Section 3(1) imposes GST broadly on taxable supplies and importations within the scope of the GST law, while section 5(1) exempts State property entirely. However, the GST law itself (A New Tax System (Goods and Services Tax) Act 1999) may separately address State property treatment. The exemption in s.5(1) of this imposition Act could create a gap or conflict where the GST Act imposes liability but this imposition Act refuses to give it constitutional effect for State property, producing an outcome where liability exists in the substantive Act but the constitutional imposition is absent — making the tax unenforceable on State property not because of substantive exemption but due to imposition mechanics."}]},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The legislation remains tightly focused on its original purpose: imposing GST as a customs duty on imports. The 2005 amendment reference in section 3(2) was a technical adjustment to prevent double imposition when the reverse charge rules were introduced, not an expansion of scope."},"complexity_factors":["Only 5 sections total","No defined terms section (relies on external definitions from the main GST Act and Constitution)","Single conditional limitation in section 3(2) avoiding overlap with another Act","Minimal cross-referencing (only to Constitution section 55 and section 114, and two other GST Acts)","Straightforward rate provision with no exemptions or calculations"],"plain_english_summary":"This law is one of several that creates Australia's Goods and Services Tax (GST). Specifically, it imposes GST on goods imported into Australia (customs duties). \n\n**What it does:**\n- **Imposes GST on imports**: When you bring goods into Australia from overseas, this law imposes the 10% GST on those goods as a customs duty.\n- **Sets the rate**: Confirms the GST rate is 10%.\n- **Avoids double-taxing**: It doesn't apply if another law (the Recipients-Customs Act 2005) already imposes GST on the same transaction.\n- **Protects State property**: Ensures the Commonwealth can't use this law to tax property belonging to State governments (a constitutional safeguard).\n\n**Who it affects:**\n- Importers of goods into Australia\n- The Australian Border Force (who collects the tax)\n- State governments (protected from taxation on their property)\n\n**Why it matters:**\nThis is a technical but crucial piece of Australia's tax system. The Constitution requires customs duties to be imposed by specific laws. This Act satisfies that requirement for GST on imported goods, working alongside the main GST Act to ensure imports are taxed at the same 10% rate as domestic goods."}},"importantCases":[],"_links":{"self":"/api/acts/a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999","history":"/api/acts/a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999/history","analysis":"/api/acts/a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999/analysis","conflicts":"/api/acts/a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999/conflicts","importantCases":"/api/acts/a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999/important-cases","documents":"/api/acts/a-new-tax-system-goods-and-services-tax-imposition-customs-act-1999/documents"}}