State of Rajasthan v. Combined Traders
Background
Combined Traders had sold goods against "Form C" declarations to two Delhi firms, which the tax authorities later found to be bogus shell entities. Rajasthan's tax department cancelled these Form C declarations under a state rule (sub-rule 20 of Rule 17 of the Central Sales Tax (Rajasthan) Rules, 1957) that allowed cancellation of declarations obtained by fraud. Combined Traders challenged this rule in the Rajasthan High Court as beyond the State's law-making power, and the High Court agreed, striking the rule down.
Decision Breakdown
The Supreme Court examined the Central Sales Tax Act's scheme, which gives the Central Government (not the States) the specific power to prescribe the form and content of declarations like Form C. States have only a general, residual rule-making power to carry out the Act's purposes, and that power cannot be used to make rules inconsistent with the Central Government's specific rules. Since the Central Rules nowhere authorize cancelling a validly-issued Form C, Rajasthan's rule allowing such cancellation was held inconsistent with the Central scheme, regardless of the (legitimate) anti-fraud goal behind it. The Court dismissed the State's appeal, agreeing that the rule was invalid.
Lesson Learnt
A State Government cannot use its general "carry out the purposes of the Act" rule-making power to legislate on a subject that a Central law has specifically reserved for the Central Government, even where the state rule serves a good purpose like preventing tax fraud.