Retrospective tax relief depends on clear intent; a clarificatory amendment removing an anomaly may apply to earlier assessments.

A substituted tax exemption notification is not retrospective merely because it uses the word "substituted"; retrospectivity requires clear legislative intent or an obvious omission being corrected, so the later inclusion of chewing tobacco in the exemption entry applied prospectively and did not extend relief to earlier periods. By contrast, the amendment to section 3(4) was treated as clarificatory because it removed an unintended anomaly in the presumptive tax scheme and explained that the levy applied only up to the eligible turnover, with regular tax applying above the threshold. That amendment was therefore given retrospective effect for earlier assessments, producing a mixed outcome across the connected writ petitions.

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Issues: (i) Whether the notification substituting "chewing tobacco" into the exemption entry under the Tamil Nadu Value Added Tax Act, 2006 operated retrospectively from the date of the original exemption notification; (ii) Whether the amendment to section 3(4) of the Tamil Nadu Value Added Tax Act, 2006 by Act 27 of 2011 was clarificatory and retrospective, so as to apply to assessments for earlier periods.

Issue (i): Whether the notification substituting "chewing tobacco" into the exemption entry under the Tamil Nadu Value Added Tax Act, 2006 operated retrospectively from the date of the original exemption notification.

Analysis: The exemption entry was construed strictly. The original notification exempted specified commodities, while the later notification substituted the entry to include chewing tobacco. The change was not shown to be the correction of an obvious omission, nor was there material in the notification or surrounding context indicating that the new commodity was intended to be covered from the inception of the original exemption. The use of the word "substituted" did not, by itself, establish retrospectivity. The Court held that reading chewing tobacco into the earlier notification would amount to rewriting the exemption.

Conclusion: The amendment was prospective. The claim for retrospective exemption was rejected and the tobacco dealers were not entitled to relief for the earlier period.

Issue (ii): Whether the amendment to section 3(4) of the Tamil Nadu Value Added Tax Act, 2006 by Act 27 of 2011 was clarificatory and retrospective, so as to apply to assessments for earlier periods.

Analysis: The 2008 provision had generated uncertainty on the tax liability of dealers whose turnover crossed the threshold during the year. The 2011 amendment, read with the statement of objects and reasons, was treated as a measure to rectify that anomaly and clarify that the presumptive levy applied up to the eligible turnover and regular tax applied only on turnover above the threshold. The amendment was therefore regarded as removing an unintended defect in the earlier provision rather than creating a new burden. On that basis, and following the approach already accepted in a similar case, the Court held that the amendment should govern the earlier assessment year.

Conclusion: The amendment was held to be retrospective and applicable to earlier assessments. Relief was granted to the assessees in those writ petitions.

Final Conclusion: The challenge to retrospective exemption for chewing tobacco failed, but the challenge concerning the amended presumptive taxation provision succeeded, resulting in a mixed outcome across the connected writ petitions.

Ratio Decidendi: A substituted fiscal provision or exemption notification is not retrospective merely because it uses the word "substituted"; retrospectivity depends on clear legislative intent or an obvious omission being corrected, while a clarificatory amendment removing an anomaly in an existing tax provision may operate retrospectively.

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