Finality of tax assessments bars collateral writ challenge; vires attack also fails where the provision is not in controversy.

A writ court will not reopen completed sales tax assessments that were never challenged before the proper forum and have attained finality; a refund claim based on a fresh factual enquiry into the nature of the sale was therefore not maintainable. The Court also held that a constitutional challenge to section 20 of the Andhra Pradesh General Sales Tax Act, 1957 could not be entertained where that provision was not actually in controversy on the facts before it. Both the collateral attack on finalised assessments and the vires challenge failed, and the writ petition was rejected.

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Issues: (i) whether a writ petition could be entertained to seek refund and reopen assessments for earlier years that had attained finality, (ii) whether the petitioner could challenge the validity of section 20 of the Andhra Pradesh General Sales Tax Act, 1957 when that provision was not in controversy on the facts.

Issue (i): Whether a writ petition could be entertained to seek refund and reopen assessments for earlier years that had attained finality.

Analysis: The earlier assessment orders had been validly passed and were never challenged before the appropriate forum. Once those assessments had become final, they could not be treated as bad in collateral writ proceedings. A fresh writ petition could not be used to obtain refund on the basis of a new factual enquiry into whether the commodity sold was a second sale, especially when the assessed years stood concluded.

Conclusion: The challenge to the completed assessments and the refund claim was not maintainable.

Issue (ii): Whether the petitioner could challenge the validity of section 20 of the Andhra Pradesh General Sales Tax Act, 1957 when that provision was not in controversy on the facts.

Analysis: The validity of the provision was sought to be questioned, but the section was not in controversy on the facts of the case. A party cannot be permitted to assail the vires of a provision when the provision does not arise for decision on the factual matrix before the Court.

Conclusion: The challenge to the vires of section 20 was not entertainable.

Final Conclusion: The writ petition was found unfit for interference both on account of finalised earlier assessments and because the constitutional challenge was not open on the facts, so the petition failed.

Ratio Decidendi: A writ court will not reopen finally concluded tax assessments or entertain a vires challenge to a statutory provision that is not actually in controversy on the facts of the case.

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