Constructive res judicata does not bar an unadjudicated interest challenge, and entry tax interest needs a substantive statutory basis.

Constructive res judicata did not bar the later challenge to interest on entry tax because the earlier writ proceedings had not actually entertained or decided that issue. The Supreme Court also held that the U.P. Tax on Entry of Goods into Local Areas Act, 2007 supplies a substantive basis for levy of interest on delayed payment of entry tax, read with incorporated provisions of the U.P. VAT Act, 2008 applied mutatis mutandis. The impugned judgment was set aside and the writ matters were revived before the High Court for determination of the remaining liability and quantum issues.

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Issues: (i) Whether the subsequent writ petition challenging the demand of interest on entry tax was barred by constructive res judicata because an earlier writ petition had been dismissed. (ii) Whether the U.P. Tax on Entry of Goods into Local Areas Act, 2007 contains a substantive provision authorising levy of interest on delayed payment of entry tax.

Issue (i): Whether the subsequent writ petition challenging the demand of interest on entry tax was barred by constructive res judicata because an earlier writ petition had been dismissed.

Analysis: The earlier writ petition had been confined by the High Court to specified constitutional issues arising from the liberty granted by the Supreme Court. The challenge to interest had been separately raised in the pleadings, but that question was not permitted to be argued or decided in the batch disposed of on 04.05.2018. A matter not expressly entertained or adjudicated in the former proceeding cannot be treated as having been finally decided for the purpose of constructive res judicata.

Conclusion: The bar of constructive res judicata did not apply, and the challenge to the interest demand was maintainable.

Issue (ii): Whether the U.P. Tax on Entry of Goods into Local Areas Act, 2007 contains a substantive provision authorising levy of interest on delayed payment of entry tax.

Analysis: Section 12(3) deals only with a specific situation where a manufacturer fails to deposit tax received under that section. Section 13 makes certain provisions of the Uttar Pradesh Value Added Tax Act, 2008 applicable mutatis mutandis, including Section 33 on payment and recovery of tax, which provides for interest on unpaid tax. Applying the settled principle that interest can be levied only when the taxing statute contains a substantive provision for it, the Court held that the scheme of the Act and the incorporated provision were sufficient to sustain the authority to levy interest, subject to factual and other issues left for decision by the High Court.

Conclusion: The Act, 2007 does contain a substantive legal basis for levy of interest on delayed payment of entry tax.

Final Conclusion: The impugned judgment was set aside and the writ matters were revived before the High Court for decision on the remaining questions relating to the liability and quantum of interest.

Ratio Decidendi: Where an earlier proceeding has not actually decided the levy of interest, constructive res judicata does not bar a later challenge to that levy; and a taxing statute may authorise interest through incorporated provisions read mutatis mutandis, provided the statutory scheme supplies a substantive basis for such levy.

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