Substantial question of law may arise from taxing-rule interpretation, but provisional assessment orders are not final orders

For Article 133(1) purposes, an arguable interpretation of a taxing rule affecting liability and substantial revenue can raise a substantial question of law, especially where no authoritative Supreme Court ruling exists on the rule. However, an order setting aside a provisional assessment is not a final order if it leaves the assessment proceedings alive and does not conclusively determine the parties' rights in the proceeding itself. An interlocutory order does not become final merely because it decides an important issue. On that basis, leave to appeal could not be granted because the final-order requirement was not met despite the substantial question of law.

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Issues: (i) Whether an arguable interpretation of a taxing rule affecting liability and involving substantial revenue raised a substantial question of law under Article 133(1) of the Constitution. (ii) Whether the order setting aside a provisional assessment was a final order in a civil proceeding so as to attract Article 133(1).

Issue (i): Whether an arguable interpretation of a taxing rule affecting liability and involving substantial revenue raised a substantial question of law under Article 133(1) of the Constitution.

Analysis: The question concerned the scope of rule 18(2) of the Madras General Sales Tax (Turnover and Assessment) Rules and its impact on tax liability. An interpretation of a statutory rule, particularly one imposing tax liability and affecting a large class of dealers, was treated as raising a substantial question of law. The absence of a prior authoritative pronouncement of the Supreme Court on the rule also supported the existence of such a question.

Conclusion: Yes. A substantial question of law arose.

Issue (ii): Whether the order setting aside a provisional assessment was a final order in a civil proceeding so as to attract Article 133(1).

Analysis: The order under challenge only disposed of the provisional assessment stage and did not finally determine the rights of the parties in the assessment proceedings. The assessment process remained alive and had to be completed in the ordinary manner under the Act and the Rules. An order is final only if it finally disposes of the rights of the parties in relation to the proceeding itself, and an interlocutory order does not become final merely because it decides an important issue.

Conclusion: No. The order was interlocutory and not a final order within Article 133(1).

Final Conclusion: Leave to appeal could not be granted because the constitutional requirement of a final order in a civil proceeding was not satisfied, notwithstanding the existence of a substantial question of law.

Ratio Decidendi: For purposes of Article 133(1) of the Constitution, an order is final only if it conclusively determines the rights of the parties in the proceeding itself; an interlocutory order in ongoing assessment proceedings is not appealable merely because it raises an important question of law.

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