Common parlance interpretation of tax exemption terms upheld while retrospective curative amendment to agricultural exemption survives constitutional challenge

An undefined tax entry was construed in its ordinary common parlance sense, and "power" was treated as electricity rather than diesel-generated energy; on that basis, diesel engine pump sets used for agriculture were held not to fall within the exemption for implements operated by power. The retrospective amendment to item 13 was treated as curative and clarificatory, removing the basis of the earlier interpretation without creating an impermissible fresh levy, and was upheld as within legislative competence. The constitutional challenge under Articles 14 and 19(1)(g) was rejected.

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Issues: (i) Whether diesel engine pump sets used for agricultural purposes are "implements operated by power" within item 13 of Schedule I to the Bengal Finance (Sales Tax) Act, 1941 as amended in 1993. (ii) Whether the retrospective amendment of item 13 with effect from 1 October 1982 is unconstitutional.

Issue (i): Whether diesel engine pump sets used for agricultural purposes are "implements operated by power" within item 13 of Schedule I to the Bengal Finance (Sales Tax) Act, 1941 as amended in 1993.

Analysis: The expression "power" was not defined in the Act and had to be understood in its ordinary and common parlance sense. On that approach, the term was held to denote energy supplied by electricity and not to extend to energy generated by diesel-driven engines. Diesel engine pump sets used in agriculture were accepted as agricultural implements, but they did not fall within the exclusion for implements operated by power merely because they were driven by diesel.

Conclusion: Diesel engine pump sets used for agricultural purposes are not implements "operated by power" within item 13 of Schedule I, and the assessee succeeded on this issue.

Issue (ii): Whether the retrospective amendment of item 13 with effect from 1 October 1982 is unconstitutional.

Analysis: The amendment was treated as curative and clarificatory, removing the basis of the earlier interpretation without imposing an impermissible fresh levy. Retrospective fiscal legislation was held to be within legislative competence, and the challenge based on Articles 14 and 19(1)(g) was rejected.

Conclusion: The retrospective amendment was valid and constitutional, and this issue was decided against the assessee.

Final Conclusion: The application failed in the result because the amended entry was applied to exclude diesel engine pump sets from tax-free treatment, and the assessment and appellate orders were set aside only to the extent accepted by the majority reasoning, with the proceeding ultimately dismissed.

Ratio Decidendi: In a taxing entry, an undefined expression must be construed in its common parlance sense; where the legislature enacts a curative retrospective amendment to remove the basis of an earlier interpretation, such amendment is within legislative competence if it does not transgress constitutional limits.

Concurring Opinion: The Chairman agreed with dismissal, holding that a diesel-driven pump set is an implement operated by power and that the retrospective amendment validly removed the earlier basis of exemption.

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