Retrospective tax exemption validation survives when legislative defects are removed and output-based fiscal classification remains rational.
Retrospective validation of a tax exemption remains within legislative competence where the Legislature removes the defect in the earlier scheme and changes the legal basis underlying the prior judicial decision, rather than exercising judicial power. The validating provision adopting the revised exemption framework was therefore constitutionally sustainable and not colourable legislation. An output-based ceiling could rationally identify tiny or cottage units for fiscal relief; retrospective operation did not make that classification arbitrary or restrict the right to carry on trade. Promissory estoppel could not restrain legislative action, and the asserted refund entitlement did not establish the claimed property protection. The validating provision and exemption scheme were sustained.
Issues: (i) Whether section 52 of the Finance Act, 1982, by giving retrospective effect to Notification No. 22/1982, was within legislative competence and amounted to an impermissible exercise of judicial power or a colourable exercise of power; (ii) Whether the retrospective scheme and the output-based ceiling for exemption violated Articles 14, 19(1)(g) and 300A of the Constitution of India, or was barred by promissory estoppel.
Issue (i): Whether section 52 of the Finance Act, 1982, by giving retrospective effect to Notification No. 22/1982, was within legislative competence and amounted to an impermissible exercise of judicial power or a colourable exercise of power.
Analysis: The retrospective provision was enacted to remove the defects noticed in the earlier exemption notification and to restore the legislative intention of confining the concession to tiny or cottage units. The valid retrospective law did not merely declare a judicial decision ineffective, but altered the legal basis on which the earlier decision had proceeded by adopting the later notification as part of the statutory scheme. A Legislature competent to impose or exempt a tax may validate past collections retrospectively, provided it removes the defect identified by the court and does not purport to exercise judicial power. The challenge based on colourable legislation also failed because the provision fell squarely within the legislative field of taxation and validation.
Conclusion: The retrospective validation enacted by section 52 was held to be within legislative competence and not an unconstitutional exercise of judicial power; the challenge failed.
Issue (ii): Whether the retrospective scheme and the output-based ceiling for exemption violated Articles 14, 19(1)(g) and 300A of the Constitution of India, or was barred by promissory estoppel.
Analysis: The exemption was part of a taxing policy and could legitimately be confined to a class selected by a rational criterion. Output was treated as a permissible basis to identify tiny units, and a retrospective exemption scheme did not become arbitrary merely because some manufacturers could not reorganise production to satisfy the ceiling after the event. The concession did not impose a restriction on the right to carry on trade, but only limited the availability of a fiscal benefit. The claim of promissory estoppel was rejected because such an equitable plea cannot control legislative action, and the alleged accrued right to refund did not amount to property protected in the manner contended.
Conclusion: The retrospective exemption scheme and the output-based classification were upheld as reasonable and non-discriminatory, and the promissory estoppel and property-based challenges failed.
Final Conclusion: The retrospective validating provision and the exemption notification were sustained, and the writ petitions were dismissed.
Ratio Decidendi: A Legislature competent over the subject may retrospectively validate a tax exemption or levy by removing the defect in the earlier law and altering the legal basis of the prior decision, and a rational output-based classification for fiscal exemption will not be struck down merely because it operates retrospectively.