Union of India & Ors. v. Exide Industries Limited & Anr.
Background
Section 43B of the Income Tax Act, 1961 generally requires certain deductions (like statutory dues) to be allowed only when actually paid, not merely when the liability accrues. In 2001, Parliament added clause (f) to this section, extending the same "actual payment" rule to deductions claimed for leave encashment liability owed to employees: a move widely seen as reversing an earlier Supreme Court ruling (Bharat Earth Movers) that had allowed such deductions on an accrual basis. Exide Industries challenged clause (f) as unconstitutional, and the Calcutta High Court struck it down as arbitrary, reasoning that it was inconsistent with the rest of Section 43B and was enacted without disclosed reasons simply to override the earlier judgment.
Decision Breakdown
The Supreme Court reversed the High Court and upheld clause (f) as constitutionally valid. It held that a law can only be struck down for lack of legislative competence or for violating fundamental rights, not merely for being "arbitrary" in a general sense, especially in tax matters where legislatures get wide latitude. The Court found no requirement that a tax provision must disclose its objects and reasons to be valid, and held that Parliament is fully entitled to legislatively change the law prospectively even if doing so neutralises the effect of an earlier judicial ruling, since that is different from unconstitutionally "overruling" a court decision. It also rejected the claim that clause (f) was inconsistent with other parts of Section 43B, noting the section already covered a diverse mix of deductions. The appeal was allowed.
Lesson Learnt
Parliament can change tax rules going forward even if doing so effectively undoes the practical benefit of an earlier Supreme Court ruling, and courts will not strike down a law merely by labelling it "arbitrary" without identifying an actual constitutional defect.