The State of Tripura & Anr. vs. Chandan Deb & Ors. (Civil Appeal No. 6500 of 2008, with 5 connected appeals)
Background
Under the Tripura Sales Tax Act, 1976, a rule (Rule 3A(2)) required companies like ONGC, GAIL and FCI to deduct 4% tax at source when paying suppliers who hired out vehicles to them, treating this "transfer of the right to use goods" as a deemed sale. The vehicle suppliers challenged the rule in the Gauhati High Court, arguing there was no provision in the parent Act itself authorising tax deduction at source, so the rule exceeded the Act's scope. The High Court agreed and struck down Rule 3A(2) as invalid ("ultra vires"), and also held the suppliers were not liable to pay sales tax at all. The State of Tripura appealed.
Decision Breakdown
The Supreme Court reversed the High Court, holding that Section 3(1) of the Act (as amended) already made any "transfer of the right to use goods", including hiring out vehicles, a taxable sale at 4%, so the liability to pay tax existed under the Act itself. Rule 3A(2) did not create any new tax liability; it merely provided a recovery mechanism (deduction at source) for a liability already fixed by the Act, which is a valid exercise of the government's rule-making power under Section 44. The Court held the High Court had wrongly conflated a machinery/collection provision with the substantive charging provision, and restored the tax deduction requirement.
Lesson Learnt
A rule made under a taxing statute is not invalid simply because the specific mechanism (like deduction at source) is spelled out in the rules rather than the parent Act, so long as the underlying tax liability is already validly created by the Act itself: rules implementing collection are treated differently in law from rules that try to create a new tax.