Gannon Dunkerley I: the works-contract sales-tax wall

On 1 April 1958, a five-judge Constitution Bench struck down the Madras works-contract sales tax as ultra vires Entry 48 List II — the wall that eventually forced the 46th Constitutional Amendment.

Valkya Editorial· Legal Intelligence·1 June 2026·12 min read

Court: Supreme Court of India
Citation: AIR 1958 SC 560
Bench: S.R. Das, C.J., T.L. Venkatarama Aiyar, J., S.K. Das, J., Vivian Bose, J., A.K. Sarkar, J.
Decided: 1 April 1958

Provisions discussed

Madras General Sales Tax Act 1939Government of India Act 1935 sch.7 entry 48 List IIConstitution of India sch.7 List II entry 54Sale of Goods Act 1930 s.4

The facts in brief

Gannon Dunkerley & Co. (Madras) Ltd. was a long-standing public-works contractor whose business consisted of executing civil and structural engineering works for governments, railways, and private employers across the Madras Presidency. Its contracts were lump-sum works contracts — the assessee undertook to construct a road, a bridge, or a building for an agreed price, supplying its own materials, plant, and labour. No separate price was set for cement, steel, or bricks; the employer agreed to pay for the completed works as a whole.

The Madras General Sales Tax Act 1939, as amended in 1947, contained a definition of "sale" wide enough to include the transfer of property in goods involved in the execution of a works contract. The Madras taxing authorities relied on this definition to tax Gannon Dunkerley on the value of materials notionally consumed in its works contracts during the assessment years in question. The assessee's position was straightforward: there had been no sale of cement, no sale of steel, no sale of bricks; there had been one indivisible contract for works at a lump sum, and the materials had become part of the immovable property as construction progressed.

The Madras High Court held in favour of the assessee on the constitutional point. The State of Madras appealed. The matter was placed before a five-judge Constitution Bench of the Supreme Court given the structural question about the limits of State competence under Entry 48 of List II of the Seventh Schedule to the Government of India Act 1935 (which the Constitution had carried forward into Entry 54 of the State List). Several State Governments intervened — every State that had attempted similar levies on civil-engineering contractors had a stake in the outcome.

The constitutional question

The central question was whether the materials supplied by a contractor in the execution of a lump-sum works contract could be taxed under Entry 48 of List II of Schedule VII of the Government of India Act 1935 — the precursor to Entry 54 of the State List — as a "sale of goods".

The State of Madras argued that the substance of every works contract included a sale of materials at the moment those materials were incorporated into the works; that the State legislature was constitutionally entitled to extract this sale-element by an enlarged statutory definition; and that the Madras 1947 amendment had done no more than identify what had always been latent in the transaction.

The assessee's case was that the expression "sale of goods" in Entry 48 carried its settled legal meaning under the Sale of Goods Act 1930 — a contract whereby the property in goods is transferred from seller to buyer for a price, requiring an agreement to sell, the passing of property, and the payment of a price ascribed to the goods. None of these elements was present in a lump-sum works contract. A State legislature could not, by definition, alter the constitutional meaning of "sale of goods".

What the Court held

The Constitution Bench unanimously held the Madras works-contract levy ultra vires Entry 48 of List II.

To constitute a sale of goods, property in the goods must, as already stated, pass for a price. But in a building contract, the agreement between the parties is that the contractor should construct the building according to the specifications contained in the agreement, and in consideration therefor receive payment as provided therein. In such an agreement, there is neither a contract to sell the materials used in the construction, nor does property pass therein as movables.

— Venkatarama Aiyar, J.

The reasoning proceeded in four connected steps.

First, the expression "sale of goods" in Entry 48 of List II carried the meaning ascribed to it by the Sale of Goods Act 1930. The framers of the Government of India Act 1935 had borrowed a settled term of art from commercial law; that settled meaning controlled the constitutional grant of legislative competence. A State legislature could not, by an enlarged statutory definition, expand the term beyond its settled commercial-law content.

Second, the essential elements of a sale of goods are (i) an agreement between competent parties to transfer property in goods for a price, (ii) the passing of property from seller to buyer, and (iii) a price ascribed to the goods. In a lump-sum works contract none of these elements is present in relation to the materials. There is no agreement to sell the materials; there is only an agreement to build. The materials do not pass from contractor to employer as movables; they pass to the employer's immovable property by accretion as the structure rises. No price is ascribed to the materials; only a price for the completed works.

Third, the building contract is in law a single indivisible contract for work and labour. A State legislature has no constitutional power to dissect such a contract into a notional sale of materials and a notional contract of service. The dissection alters the constitutional character of the transaction and travels beyond the legislative competence carried by Entry 48.

Fourth, the Madras 1947 amendment which had defined "sale" to include the transfer of property in goods involved in the execution of works contracts was therefore ultra vires the State legislature to the extent it purported to authorise the levy on indivisible works contracts. The assessment on Gannon Dunkerley fell with the amendment.

The doctrinal architecture

Gannon Dunkerley I simultaneously accomplishes three doctrinal moves that shape the entire pre-GST landscape of State indirect taxation.

First, it establishes the constitutional fixity of "sale of goods" as a term of art borrowed from the Sale of Goods Act 1930. The legislative-competence entries in the Seventh Schedule are not infinitely plastic — they carry the commercial-law content their terms had when the entries were drawn. A State legislature seeking to tax a transaction that is not a sale of goods in the Sale of Goods Act sense must look for a different entry or seek constitutional amendment. This holding survives into the GST era as the operative reason for Article 246A — Parliament chose constitutional amendment over creative re-reading.

Second, it establishes the indivisibility of the works contract as a structural feature of commercial law that the Constitution respects. A works contract is a single transaction with a single price; it does not contain a latent sale that a taxing authority can extract. The State's attempt to fragment the contract failed because fragmentation altered the constitutional character of what was being taxed. This holding feeds directly into the post-46th-Amendment treatment of works contracts in Gannon Dunkerley v. State of Rajasthan (1993) 1 SCC 364 and travels into the CGST Act 2017's classification of works contracts as services under Schedule II.

Third, it establishes the discipline of accretion in distinguishing the sale of movable goods from the construction of immovable property. Materials that, by incorporation into the works, become part of the immovable property are not sold as goods; they pass to the employer by accretion to the land. This accretion logic — that the cement and steel cease to be movables the moment they become part of the building — runs through all subsequent works-contract jurisprudence and into the GST Schedule II paragraph 5(b) treatment of construction services.

The adjacent precedents the bench had to navigate included the English line on works contracts — Tripp v. Armitage (1839), Appleby v. Myers (1867), Pritchett & Gold and EP Storage Co. v. Currie (1916) — and the Indian decisions on the Sale of Goods Act 1930. The Court drew on the English logic of accretion and on the Indian Sale of Goods Act content to fix Entry 48's outer boundary.

What the judgment did not decide

The Constitution Bench did not decide several questions that would travel into later litigation and require the 46th Constitutional Amendment to resolve.

It did not decide whether Parliament could, by constitutional amendment, enlarge Entry 54 of List II (the post-1950 successor to Entry 48) to authorise State taxation of the goods-element of a works contract by legal fiction. That question was settled, in Parliament's favour, by the Constitution (Forty-sixth Amendment) Act 1982, which inserted Article 366(29A) — sub-clause (b) of which deems the transfer of property in goods involved in the execution of a works contract to be a sale.

It did not decide the constitutional treatment of divisible contracts — contracts where the parties had themselves separated the supply of materials from the supply of labour with two distinct prices. Such contracts could continue to be taxed under Entry 48 on the materials-element, because they contained an actual sale of goods, not a deemed one.

It did not decide the treatment of pre-completion apartment sales by builders and developers — a question that the Court would eventually resolve in K. Raheja Development Corporation v. State of Karnataka (2005) 5 SCC 162 and affirm in L&T v. State of Karnataka (2014) 1 SCC 708, both relying on the post-46th-Amendment Article 366(29A)(b).

It did not decide the treatment of composite contracts outside the works-contract genus — leasing of goods, hire-purchase, restaurant supply of food and drink, transfer of right to use goods. Each of these would, in time, be brought within the deeming architecture of Article 366(29A) through sub-clauses (c) through (f).

It did not address the Union service-tax counterpart, which did not exist in 1958 — the Finance Act 1994 introduced service tax forty years later, and the Union's competence to tax the service-element of a composite works contract pre-1 June 2007 would be denied by CCE Kerala v. Larsen & Toubro Ltd (2016) 1 SCC 170 on the absence of a charge and machinery provision.

After the judgment

The wall held for twenty-four years. Every attempt by a State legislature to bring works contracts within sales tax was tested against Gannon Dunkerley I and found wanting. The Madras pattern was repeated in Mysore, Andhra Pradesh, Uttar Pradesh, Maharashtra, and West Bengal; in each case the courts struck down the works-contract levy on the authority of the 1958 Constitution Bench. By the late 1970s the loss of State revenue from civil construction had become a serious fiscal concern — civil engineering contracts ran to thousands of crores, and the goods-element was not being taxed by anyone.

Parliament's response was the Constitution (Forty-sixth Amendment) Act 1982, which inserted Article 366(29A). Sub-clause (b) deems the transfer of property in goods involved in the execution of a works contract to be a sale by the person making the transfer and a purchase by the person to whom the transfer is made — directly undoing the structural holding of Gannon Dunkerley I. The 46th Amendment came into force on 2 February 1983. Sub-clauses (c), (d), (e), and (f) of Article 366(29A) extended the deeming fiction to hire-purchase, transfer of right to use goods, supply of goods by unincorporated associations to their members, and supply of food and drink in restaurants — each addressing a different line of cases that had treated the transaction as something other than a sale.

The deeming fiction did not, however, give States a free hand. In Gannon Dunkerley v. State of Rajasthan (1993) 1 SCC 364 — Gannon Dunkerley II — a five-judge Constitution Bench held that the post-46th-Amendment State competence was limited to the value of goods at the time of incorporation in the works, and that eight categories of deductions had to be allowed (labour charges; amounts paid to sub-contractors; planning, designing and architect's fees; hire of plant and machinery; consumables; establishment cost relatable to supply of labour and services; other similar expenses relatable to supply of labour and services; and profit earned by the contractor on the supply of labour and services). The 1958 holding's structural logic — that labour and service value cannot be taxed as goods — survived into the post-amendment architecture.

The GST regime under the CGST Act 2017 completes the doctrinal circuit. Schedule II paragraph 6(a) classifies works contracts as a deemed supply of services — a parliamentary choice that reverses the VAT-era goods-classification and resolves, by legislative simplification, the dual-tax problem that Article 366(29A)(b) had created. Article 246A's concurrent Union-State competence over GST renders the 46th-Amendment deeming fiction largely redundant for works-contract purposes, though Article 366(29A) remains on the constitutional text. The Gannon Dunkerley I logic that the State cannot tax labour and service as a sale of goods survives, in modified form, into the GST regime — labour and service are now taxed as services, by Parliament and States concurrently, with no need for a deeming fiction.

The 1958 judgment remains a foundational citation in works-contract jurisprudence, cited repeatedly in Mohit Minerals v. Union of India (2022) and Safari Retreats v. Union of India (2024) for the architecture of indirect-tax competence under the Constitution.