Final taxability findings bind the revenue and bar reopening the same dispute under a different statutory provision.

A final decision on the taxability of goods bound the revenue on both the operative result and the foundational finding that the goods were gold-thread. The Karnataka High Court stated that, after earlier writ petitions had quashed notices seeking to tax the turnover under section 5(1) and had proceeded on the basis that the goods fell under entry 49 of the Second Schedule, the same taxability issue could not be reopened through section 12-A. The court treated the earlier finding as essential to the decision and held that a party bound by it could not relitigate the same controversy under a different statutory route. The section 12-A notices were therefore unsustainable.

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Issues: Whether the revenue could, by invoking section 12-A of the Karnataka Sales Tax Act, 1957, reopen the very same turnover and contend that the petitioners' goods were taxable under section 5(1) notwithstanding the earlier decision holding the goods to fall under entry 49 of the Second Schedule.

Analysis: The earlier writ petitions had already conclusively proceeded on the basis that the goods were gold-thread and had quashed the notices that sought to tax the turnover under section 5(1) instead of entry 49. That conclusion was not collateral to the earlier decision but formed its foundation. A party bound by that decision could not later challenge that foundational finding by raising the same taxability controversy under another provision of the same Act. The fact that the present notices were issued under section 12-A did not alter the binding effect of the earlier adjudication, since the substance of the dispute remained the same and the revenue could not relitigate the concluded issue through a different procedural route.

Conclusion: The revenue was estopped from disputing the earlier finding, and the notices issued under section 12-A could not be sustained.

Ratio Decidendi: A final decision binds not only its formal operative part but also the foundational finding essential to it, and the same issue cannot be reopened against the same party by resorting to a different statutory provision.

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