Works contract tax rules: adjusted supplies and royalty-paid quarry materials are taxable, while free supplies and labour are excluded.

Sections 6C and 6D of the Bengal Finance (Sales Tax) Act were analysed as a constitutional levy on the transfer of property in goods involved in works contracts, and the fiscal classification under those provisions was upheld. The taxable value under section 6D was held to include goods supplied by the contractee against deduction or adjustment from the contractor's bills, but not free supplies, pure labour, profit, fuel or firewood; freight and delivery charges were included. Royalty-paid quarry materials used in works contracts were treated as taxable transfers of property in goods. Declared goods remained protected by the limits in section 15(a) of the Central Sales Tax Act.

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Issues: (i) Whether sections 6C and 6D of the Bengal Finance (Sales Tax) Act, 1941, along with the allied amendments and rules, were beyond legislative competence or unconstitutional on the grounds of discrimination. (ii) Whether the value of stores and materials supplied by the contractee for use in execution of a works contract, and the value of goods supplied against deduction or adjustment from the contractor's bills, formed part of the contractual transfer price under section 6D. (iii) Whether labour charges, freight, firewood, profit, royalty and similar expenditure were includible in the contractual transfer price. (iv) Whether goods obtained from river-bed quarrying on payment of royalty for use in works contracts resulted in transfer of property and could be taxed under section 6D. (v) Whether declared goods used in works contracts were subject to the limitation in section 15(a) of the Central Sales Tax Act, 1956.

Issue (i): Whether sections 6C and 6D of the Bengal Finance (Sales Tax) Act, 1941, along with the allied amendments and rules, were beyond legislative competence or unconstitutional on the grounds of discrimination.

Analysis: Article 366(29A)(b) permits the State to levy tax on the transfer of property in goods involved in works contracts. The provisions under challenge were held to implement that constitutional power. The contractors governed by section 6D were treated as a separate class, and the denial of declaration forms was held not to be arbitrary because the class itself was differently situated and taxed at a lower rate. The fiscal classification was found to satisfy the test of reasonable classification with a rational nexus to the object of taxation.

Conclusion: The challenge failed. Sections 6C and 6D, together with the allied provisions and rules, were held valid and constitutional.

Issue (ii): Whether the value of stores and materials supplied by the contractee for use in execution of a works contract, and the value of goods supplied against deduction or adjustment from the contractor's bills, formed part of the contractual transfer price under section 6D.

Analysis: A works contract was treated as divisible after the constitutional amendment, and the transfer of property in goods was held to occur when the goods were used or incorporated in the work. Where goods were supplied by the contractee for price adjusted against the contractor's dues, the payment element made the transaction a sale for section 6D purposes. Goods supplied free of cost stood on a different footing and were excluded. The expression contractual transfer price was construed by reference to the statutory explanation and the computation rule.

Conclusion: The value of goods supplied by the contractee against price adjustment or deduction formed part of the contractual transfer price. Goods supplied free of cost did not.

Issue (iii): Whether labour charges, freight, firewood, profit, royalty and similar expenditure were includible in the contractual transfer price.

Analysis: Pure labour charges were held not to be consideration for transfer of goods. Profit was also excluded. Freight and delivery costs for carrying goods to the worksite were held includible because the statutory explanation treated them as part of the valuable consideration. Fuel and firewood, once consumed, ceased to retain the character of goods for the purposes of deemed sale. As to other expenses such as travelling, designing, octroi, entry tax, storage, supervision, overheads and similar items, no blanket ruling was given and such questions were left for determination in individual assessments.

Conclusion: Labour charges and profit were excluded; freight and delivery were included; fuel and firewood were excluded; other similar expenses were left open for case-specific determination.

Issue (iv): Whether goods obtained from river-bed quarrying on payment of royalty for use in works contracts resulted in transfer of property and could be taxed under section 6D.

Analysis: On the facts of the quarrying arrangements, royalty was treated not as a mere administrative arrangement but as consideration for obtaining the right to collect and appropriate the materials. The earlier Calcutta view was not followed, and the reasoning in decisions treating royalty as price or as part of the transaction was preferred. The materials were held to pass to the contractor on collection and again to pass on use in the works, bringing the value within the taxable base.

Conclusion: The royalty-paid stone materials were held includible in the contractual transfer price and taxable under section 6D.

Issue (v): Whether declared goods used in works contracts were subject to the limitation in section 15(a) of the Central Sales Tax Act, 1956.

Analysis: Declared goods under section 14 of the Central Sales Tax Act retain the statutory protection granted by section 15(a), which restricts the rate and the stage of levy. The State's taxing power under section 6D remained subject to that limitation where declared goods were involved.

Conclusion: Declared goods used in works contracts could be taxed only within the limits prescribed by section 15(a).

Final Conclusion: The statutory scheme governing works contracts under the 1941 Act was upheld in substance, with the taxable base expanded to include goods transferred for price adjustment and royalty-paid quarry materials, while free supplies and non-goods components were excluded or left to individual assessment on the facts.

Ratio Decidendi: After the constitutional amendment, a works contract is taxable to the extent of the transfer of property in goods involved in its execution, and the taxable value comprises consideration received or receivable for such transfer, excluding components not referable to goods, while declared-goods restrictions continue to apply.

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