Supreme Court Constitution Bench Ruling: Ambiguity in Tax Exemption Notifications Must Strictly Favour the Revenue

The interpretation of fiscal statutes, particularly concerning exemption clauses, has historically been a subject of intense judicial debate. In a landmark ruling, a five-judge Constitution Bench of the Supreme Court of India in the matter of Commissioner of Customs (Import) Vs Dilip Kumar And Company & Ors. decisively settled the jurisprudential conflict regarding the interpretation of ambiguous tax exemption notifications.

The apex court undertook a comprehensive review of statutory interpretation principles to determine whether the benefit of an ambiguous exemption clause should be granted to the assessee or the Revenue. This detailed summary encapsulates the factual background, the evolution of the legal conflict, the principles of statutory construction analyzed by the Court, and the final ratio decidendi that reshapes the landscape of tax litigation in India.

1. The Genesis of the Dispute and Factual Matrix

The necessity for a Constitution Bench arose from conflicting judicial precedents, primarily stemming from the earlier decision in Sun Export Corporation, Bombay v. Collector of Customs, Bombay. In that instance, a three-judge bench had concluded that any lack of clarity or ambiguity within a tax exemption provision must be interpreted to the advantage of the assessee. Subsequent benches, however, expressed profound reservations about this proposition, noting that it contradicted the fundamental tenet that exemption clauses must be construed strictly.

The Underlying Facts of the Present Case

The immediate controversy involved the classification and applicable duty on a specific imported commodity:

  • An assessee imported a consignment of feed-grade Vitamin E50 powder, documented under Bill of Entry No. 8207 on August 19, 1999.
  • The assessee asserted eligibility for a reduced customs duty rate of 5% (as opposed to the standard 30% rate) by invoking Customs Notification No. 20/1999.
  • They classified their imported material under Chapter 2309.90, which specifically covered prawn feed, relying heavily on the precedent set by the Sun Export Case to claim the concessional benefit.
  • Conversely, the customs department rejected this claim, arguing that the imported goods were chemical ingredients intended for animal feed, not the finished animal/prawn feed itself. Consequently, the department categorized the goods under Chapter 29, which attracted the standard tariff.

While the original adjudicating authority sided with the Revenue by distinguishing the Sun Export Case, the appellate authorities—including the Commissioner of Customs (Appeals) and the Customs, Excise and Service Tax Tribunal (CESTAT)—ruled in favour of the assessee. This prompted the Revenue to escalate the matter to the Supreme Court.

When the appeal reached a two-judge bench, the presiding judges expressed serious doubts regarding the correctness of the Sun Export Case. They observed that the earlier ruling had seemingly ignored a long line of established judgments which mandated that an entity seeking an exemption must fall squarely and strictly within the explicit parameters of the notification.