Procedural audit certification rule upheld as valid subordinate legislation for sales tax assessments and pending proceedings.

A delegated fiscal rule requiring an audit certificate and prescribed forms for assessment was upheld as a procedural measure within the State's rule-making power. The Court found no factual foundation for mala fides or constitutional arbitrariness, noting that policy choices in subordinate legislation are not displaced absent clear proof. It further held that the rule fell within the power to regulate procedure and forms under the State sales tax statute, could validly operate in Central Sales Tax proceedings through the statutory machinery provision, and applied to pending assessment year 2000-2001 because procedural changes do not disturb vested substantive rights.

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Issues: (i) Whether insertion of sub-rule (5-A) in rule 17 of the Andhra Pradesh General Sales Tax Rules, 1957 was vitiated by mala fides or arbitrariness; (ii) whether sub-rule (5-A) was ultra vires section 39 of the Andhra Pradesh General Sales Tax Act, 1957; (iii) whether sub-rule (5-A) could validly apply to proceedings under the Central Sales Tax Act, 1956; and (iv) whether the provision could be applied to the assessment year 2000-2001.

Issue (i): Whether insertion of sub-rule (5-A) in rule 17 of the Andhra Pradesh General Sales Tax Rules, 1957 was vitiated by mala fides or arbitrariness.

Analysis: A challenge to subordinate legislation on mala fides required clear pleading and proof of the relevant facts showing malice in fact or malice in law. The record contained no factual foundation beyond a bare allegation that the amendment followed a representation from the professional body of chartered accountants. The Court also held that the wisdom, necessity, or policy choice underlying delegated legislation is not open to judicial substitution unless the measure is shown to be arbitrary or discriminatory in the constitutional sense.

Conclusion: The challenge on the ground of mala fides and arbitrariness failed.

Issue (ii): Whether sub-rule (5-A) was ultra vires section 39 of the Andhra Pradesh General Sales Tax Act, 1957.

Analysis: Section 39 empowered the State Government to frame rules for carrying out the purposes of the Act and, in particular, to regulate procedure and the forms to be adopted in proceedings under the Act. The compulsory audit certificate and prescribed forms were treated as procedural requirements governing assessment proceedings and as a mode of proof for determining turnover and tax liability. On that basis, the rule was held to fall within the delegated power conferred by section 39.

Conclusion: Sub-rule (5-A) was not ultra vires section 39 of the Act.

Issue (iii): Whether sub-rule (5-A) could validly apply to proceedings under the Central Sales Tax Act, 1956.

Analysis: Section 9(2) of the Central Sales Tax Act, 1956 makes the assessment and collection machinery under the general sales tax law of the State applicable to CST proceedings, including the provisions relating to returns and assessment procedure. The impugned rule was not shown to be inconsistent with the Central Sales Tax Act or the rules made thereunder, and the State rule-making power under section 39 of the APGST Act was held to operate in aid of the CST assessment mechanism through section 9(2).

Conclusion: The rule was held applicable to CST proceedings as well.

Issue (iv): Whether sub-rule (5-A) could be applied to the assessment year 2000-2001.

Analysis: The Court characterised the audit requirement as procedural and not as creating a vested substantive right in favour of dealers or their representatives. Procedural changes ordinarily apply to pending and future proceedings, unless a contrary intention appears or vested rights are impaired. Since the assessments for the relevant year were still pending, no accrued right or concluded assessment was disturbed by applying the amended procedure.

Conclusion: The rule was held applicable to the assessment year 2000-2001.

Final Conclusion: The amended audit requirement was upheld as a valid procedural rule within the State's delegated power, applicable to APGST and CST proceedings, and operable for pending assessments.

Ratio Decidendi: A delegated fiscal rule prescribing audit certification and prescribed forms for assessment is valid if it falls within the rule-making power over procedure and forms, is not shown to be mala fide or constitutionally arbitrary, and may be applied to pending proceedings as a procedural measure.

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