Separate assessment years and strict deduction proof barred writ relief where statutory remedies were available.

Each assessment year was treated as a separate proceeding, so an earlier writ determination in a different year did not bar the present challenge by res judicata or an analogous principle. The deduction rule was construed as clear and mandatory: the dealer had to produce the broker-member's relevant account sale and a signed declaration that the tea was sold to registered dealers for resale or manufacture, and consolidated particulars were insufficient. The Court rejected reliance on departmental practice, custom, waiver, promissory estoppel, and beneficial construction, and held that substantial compliance was not shown. It also declined writ interference because an effective statutory appellate remedy existed, leaving the assessment and demand intact.

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Issues: (i) whether the earlier writ determination in a different assessment year operated as res judicata or by analogous principle to bar the present challenge; (ii) whether, on a proper construction of rule 3(30)(a), the assessee was entitled to deduction without producing separate account sales and declaration forms, and whether the writ petition was maintainable despite the statutory remedies.

Issue (i): Whether the earlier writ determination in a different assessment year operated as res judicata or by analogous principle to bar the present challenge.

Analysis: Assessment proceedings under the sales tax law were held to be separate and distinct for each year. The earlier decision could not ordinarily bind a later assessment, though the Court noticed limited exceptions in tax jurisprudence where an earlier decision, if not arbitrary or reached without fresh facts, may carry persuasive force. On the facts, the case did not fall within those exceptions. The explanation to Section 141 of the Code of Civil Procedure, 1908, was also treated as not retrospective for the present controversy.

Conclusion: The plea of res judicata or analogous bar failed, but it did not help the assessee.

Issue (ii): Whether, on a proper construction of rule 3(30)(a), the assessee was entitled to deduction without producing separate account sales and declaration forms, and whether the writ petition was maintainable despite the statutory remedies.

Analysis: The rule was held to be clear and unambiguous. It required the dealer claiming deduction to produce the relevant account sale rendered by the broker-member and a declaration signed by the broker-member stating that the goods were sold to registered dealers entitled to purchase tea for resale or manufacture. Consolidated account sales without the requisite separate particulars were found insufficient. The Court rejected reliance on past departmental practice, custom, waiver, promissory estoppel, and beneficial construction, and held that substantial compliance with the rule had not been shown. It further held that, in light of the statutory appellate machinery and the governing principle against entertaining writ relief where an efficacious remedy existed, the writ challenge was not maintainable.

Conclusion: The assessee was not entitled to the claimed deduction and the assessment and demand were upheld.

Final Conclusion: The appeal was allowed, the writ order was set aside, and the assessment and demand notices were restored.

Ratio Decidendi: In tax matters, each assessment year is ordinarily a separate proceeding, and where the deduction provision is unambiguous, the assessee must strictly comply with the prescribed documentary requirements; absent such compliance, past administrative practice or equitable doctrines cannot override the statute, and writ relief is not ordinarily available against an assessment made within jurisdiction when statutory remedies exist.

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