Works-contract taxation upheld in substance, but restrictions on processed goods and labour-charge deductions were struck down.

The amended Kerala works-contract levy was upheld in substance because, after the Forty-sixth Amendment, the State may tax the transfer of property in goods involved in execution of a works contract, subject to article 366(29A)(b), article 286 and the Central Sales Tax Act. The compounded-rate option, deduction and withholding mechanism, and related collection provisions were treated as voluntary or ancillary machinery and therefore valid. However, the provisos to section 5(1)(iv)(b) were unconstitutional to the extent they confined the benefit to goods transferred without processing or manufacture, and rule 8(4)(b) was invalid insofar as it excluded labour charges connected with the goods involved in the contract. The offending words were severable.

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Issues: (i) Whether the provisions relating to levy and collection of tax on works contracts under the amended Kerala General Sales Tax Act, 1963 and the Kerala General Sales Tax Rules, 1963, including the compounding and deduction machinery in section 7 and rule 22A, were constitutionally valid. (ii) Whether the limitation in the provisos to section 5(1)(iv)(b) confining the benefit of the charging provision to goods transferred without processing or manufacture was valid. (iii) Whether the exclusion in rule 8(4)(b) denying deduction of labour charges incurred in relation to the goods involved in the execution of the works contract was valid.

Issue (i): Whether the provisions relating to levy and collection of tax on works contracts under the amended Kerala General Sales Tax Act, 1963 and the Kerala General Sales Tax Rules, 1963, including the compounding and deduction machinery in section 7 and rule 22A, were constitutionally valid.

Analysis: The decision proceeded on the basis that, after the Forty-sixth Amendment, a works contract is divisible for sales tax purposes and the State may tax the transfer of property in goods involved in its execution, subject to the constitutional limitations in article 366(29A)(b), article 286 and the Central Sales Tax Act, 1956. The option to pay tax at compounded rates under section 7(7) and 7(7A) was treated as voluntary and therefore not open to constitutional attack. The deduction and withholding mechanism in section 7(7B) and rule 22A was held to be ancillary to effective collection of tax and a valid machinery provision. The related provisions in section 7(8), 7(10), 7(11), 7(12) and rule 30A were upheld as consequential to the compounding scheme.

Conclusion: The challenge to section 7(7), 7(7A), 7(7B), 7(8), 7(10), 7(11), 7(12), rule 22A and rule 30A failed.

Issue (ii): Whether the limitation in the provisos to section 5(1)(iv)(b) confining the benefit of the charging provision to goods transferred without processing or manufacture was valid.

Analysis: The Court held that article 366(29A)(b) permits taxation of the value of all goods involved in the execution of a works contract, and the contractor cannot be denied the ordinary incidents of sale taxation merely because the goods were processed or manufactured before being embedded in the work. The offending words in the provisos would exclude processed or manufactured goods from the exemptions and rate benefits otherwise available on a normal sale of those goods, which was beyond the constitutional field. The defect was held severable, so only the offending expression had to be removed and the rest of the provisos could stand.

Conclusion: The words limiting the provisos to transfers effected without any processing or manufacture were unconstitutional and void, while section 5(1)(iv)(b) and the provisos otherwise remained valid.

Issue (iii): Whether the exclusion in rule 8(4)(b) denying deduction of labour charges incurred in relation to the goods involved in the execution of the works contract was valid.

Analysis: The expression "labour charges" was held to be wide enough to include the labour and service components recognised in the Supreme Court's works-contract decisions. However, rule 8(4)(b) wrongly restricted deduction by excluding labour charges incurred in relation to the goods involved in the execution of the works contract, thereby bringing to tax amounts not representing the value of goods at all. That limitation was inconsistent with article 366(29A)(b), but the rest of the rule could survive by severing the offending words.

Conclusion: The restrictive words in rule 8(4)(b) were unconstitutional and void, and the rule was to operate without them.

Final Conclusion: The amended works-contract levy was upheld in substance, but the unconstitutional restriction on processed or manufactured goods in section 5(1)(iv)(b) and the invalid exclusionary words in rule 8(4)(b) were struck down. The petitions succeeded only to that limited extent, and the assessing authorities were directed to proceed consistently with those declarations.

Ratio Decidendi: In works-contract taxation, the State may tax the deemed sale of goods involved in execution only within the constitutional limits, and any statutory restriction that denies normal sales-tax incidents to such deemed sales or excludes deductible labour components beyond those limits is unconstitutional, though severable defects may be read down.

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