C.T. Kochouseph v. State of Kerala & Ors. etc. (2025 INSC 661) Purchase Tax Liability Despite Sales

A significant issue regarding state purchase taxes and exemptions under pre-GST sales tax laws was addressed by the Supreme Court in May 2025. The Court maintained the constitutionality of the challenged provisions in both Kerala and Tamil Nadu after considering whether states may apply a purchase tax where a supplier has been exempted from sales tax. The decision has practical implications for manufacturers and traders who purchase from exempt suppliers and highlights the difference between a good being subject to tax in principle and tax being payable in a specific transaction.

The facts and issue

The appeals arose from claims by manufacturers who purchased raw materials from dealers enjoying sales tax exemptions. Although those sellers did not collect sales tax under exemption notifications or schedules, state tax authorities invoked statutory purchase tax provisions that levy tax on the buyer when tax was not collected at the supplier’s stage. Buyers contended that an exempt sale should shield them from later taxation. States maintained that the purchase tax provisions were independent charging mechanisms designed to prevent revenue erosion where exemptions left a tax gap.

The Court framed the dispute around three questions. First, whether purchases from exempt sellers fell within the phrase “goods liable to tax” in the relevant purchase tax provisions. Second, whether the purchaser could be made liable under those provisions despite the seller’s exemption. Third, whether such purchase tax provisions impermissibly invaded fields reserved to the Union or amounted to an excise or interstate tax beyond state competence.

The Court’s reasoning

The Supreme Court held that “liable to tax” describes the class of goods that are within a state’s prescribed taxing schedule and is not negated merely because a particular sale was exempted by notification or special provision. Exemptions, the Court explained, affect payability at the seller’s transaction; they do not erase the goods’ taxable character for the purpose of a separate charging section that activates when tax is not collected. The Court therefore validated Sections 5A and 7A as autonomous charging provisions which can impose liability on purchasers in specified circumstances.

On federal limits, the Court concluded these provisions do not transmute into excise or interstate taxes and fall within the State’s power over intrastate sales and taxation under the Constitution. The judgement distinguished earlier narrow readings of similar taxes and applied established precedents to sustain the state schemes.

Implications for business and tax administration

Although the decision interprets pre-GST statutes, its practical lessons matter today. First, buyers must examine supplier exemption certificates and maintain clear purchase records. Second, businesses should prepare for possible subsequent liabilities where exemptions at the seller level exist. Third, the ruling highlights how recipient-side liabilities may be used by states to protect revenue, an idea that finds conceptual relevance in recipient-liability mechanisms under modern indirect tax regimes, though those regimes have different rules.

For tax administrations the judgement affirms state mechanisms to reduce revenue loss, while signalling that exemptions cannot be used to shift tax burdens permanently onto the government.

Conclusion

C.T. Kochouseph v. The State of Kerala brings doctrinal clarity: the taxable character of goods and the obligation to collect tax in a particular transaction are separate concepts. The Supreme Court’s decision endorses state purchase tax powers as constitutionally permissible and strengthens revenue protection where seller-level exemptions leave a gap. For manufacturers and tax advisers the ruling is a reminder to review supplier status, document transactions carefully and plan for compliance risk where exemptions are involved.