Works-contract composition levy upheld as a valid alternative assessment method, and retrospective validation was sustained.

A voluntarily opted composition scheme for works-contract taxation may validly use a simplified levy based on the contract consideration as an alternative to regular assessment, because it operates within the legislative scheme and does not exceed legislative competence. The challenge to section 17(6) of the Karnataka Sales Tax Act therefore failed. Retrospective validation of the composition provision was also upheld, because retrospective taxation is not unconstitutional merely by reason of retrospectivity where legislative competence exists and no breach of Articles 14, 19(1)(g) or 265 is shown. The amendment was held valid, and the constitutional challenge to the levy and its retrospective effect failed.

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Issues: (i) Whether sub-section (6) of section 17 of the Karnataka Sales Tax Act, 1957, as amended, was unconstitutional for want of legislative competence and for allegedly taxing the whole consideration of the works contract instead of only the value of goods transferred in execution of the works contract. (ii) Whether the amendment made by Act No. 7 of 1997 giving retrospective effect to the composition provision was unconstitutional as violative of Articles 14, 19(1)(g) and 265 of the Constitution of India.

Issue (i): Whether sub-section (6) of section 17 of the Karnataka Sales Tax Act, 1957, as amended, was unconstitutional for want of legislative competence and for allegedly taxing the whole consideration of the works contract instead of only the value of goods transferred in execution of the works contract.

Analysis: The composition provision was treated as an optional alternate method of taxation within the scheme of levy on works contracts. The legal position accepted in the earlier decision concerning a similar composition scheme under another State enactment was held to govern the present case because the relevant provisions were substantially similar. The Court held that a contractor who voluntarily opts for composition can be subjected to a rough and ready method of assessment based on the contract consideration, since the method remains an alternative to regular assessment and is designed to simplify tax collection without exceeding legislative competence.

Conclusion: The challenge to the constitutional validity of sub-section (6) of section 17 failed, and the provision was held valid.

Issue (ii): Whether the amendment made by Act No. 7 of 1997 giving retrospective effect to the composition provision was unconstitutional as violative of Articles 14, 19(1)(g) and 265 of the Constitution of India.

Analysis: The Court held that retrospective taxation is not unconstitutional merely because it operates retrospectively, provided the Legislature has competence and the enactment does not breach constitutional limits. The assessees had entered the composition scheme voluntarily, and the hardship caused by retrospectivity was mitigated by the liberty to revert to regular assessment under section 5-B. The retrospective amendment was therefore not arbitrary or confiscatory, and no independent violation of fundamental rights or Article 265 was established.

Conclusion: The retrospective amendment was upheld as constitutionally valid.

Final Conclusion: The Court found no merit in the constitutional challenge to either the composition levy or its retrospective amendment, and the appeals were rejected in consequence.

Ratio Decidendi: A voluntarily opted composition scheme for works-contract taxation may validly adopt a simplified levy based on total consideration as an alternative method of assessment, and retrospective validation of such a scheme is permissible if legislative competence exists and no constitutional prohibition is breached.

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