Purchase tax on manufacturing inputs upheld as valid State levy; retrospective substitution sustained prior assessments.

Section 15B of the Gujarat Sales Tax Act was treated as a purchase tax on taxable inputs used in manufacturing, not as a consignment tax, excise duty, or direct user tax. On that construction, the levy remained within the State's taxing power under Entry 54 of List II, and any incidental overlap with other fields did not invalidate it under pith and substance. The retrospective substitution of section 15B was held to operate as if the amended provision had always been in force, so earlier assessments and collections were sustained without a separate validating clause.

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Issues: (i) Whether section 15B of the Gujarat Sales Tax Act, 1969, as amended, was within the legislative competence of the State Legislature and whether it could be treated as a consignment tax, excise duty, or user tax; (ii) Whether section 4(2) of the Gujarat Sales Tax (Amendment) Act, 1990, and the retrospective substitution of section 15B sustained past assessments and collections under the repealed provision.

Issue (i): Whether section 15B of the Gujarat Sales Tax Act, 1969, as amended, was within the legislative competence of the State Legislature and whether it could be treated as a consignment tax, excise duty, or user tax.

Analysis: The charging provision was held to be a purchase tax on taxable goods purchased in the State and used as raw or processing materials or consumable stores in manufacture. The provision did not contain any levy on despatch or consignment of finished goods outside the State, and therefore did not fall within Entry 92B of List I. Nor did it impose a duty on manufacture or on the finished product; the tax attached to the purchase of inputs and was not laid on the manufacturer qua manufacturer. The Court further held that the provision did not directly tax consumption or user of goods; at the highest, there was only incidental or marginal overlap, which did not affect validity under the doctrine of pith and substance. Rule 42E was treated as operating in the sphere of assessment and refund and could not denude the parent enactment of legislative competence.

Conclusion: Section 15B was upheld as a valid provision within Entry 54 of List II and was not struck down as consignment tax, excise duty, or user tax.

Issue (ii): Whether section 4(2) of the Gujarat Sales Tax (Amendment) Act, 1990, and the retrospective substitution of section 15B, sustained past assessments and collections under the repealed provision.

Analysis: The Court held that the retrospective substitution of section 15B operated as if the new provision had been on the statute book from the specified date, and references to the repealed provision in prior instruments and assessment orders were to be read as references to the re-enacted provision. The absence of a separate validating clause did not defeat past acts, because the new provision itself was retrospective and section 9 of the Bombay General Clauses Act, 1904, supported the continuity of references after repeal and re-enactment. The Court therefore rejected the challenge to prior assessments and collections based on the repeal of the earlier version of section 15B.

Conclusion: The retrospective amendment was held sufficient to sustain earlier actions and collections, and no separate relief followed for the petitioners.

Final Conclusion: The petitions failed in their constitutional challenge, and the impugned levy was maintained as a valid purchase tax under the State taxing power.

Ratio Decidendi: Where a taxing provision, on its true construction, imposes a levy on purchase of inputs and not on despatch, manufacture, or consumption as the direct taxable event, it remains within the State power under Entry 54 of List II; incidental overlap with other fields does not invalidate it, and retrospective substitution can preserve prior actions without a separate validating clause.

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