Rebuttable presumption in sales tax penalty law requires assessment-stage satisfaction and proof against gross or wilful neglect.

Penalty under section 36(2)(c) of the Bombay Sales Tax Act required jurisdictional satisfaction to exist during assessment; where no reservation or indication to impose penalty was recorded, post-assessment initiation by a successor authority was not permissible. The Explanation was treated as a rebuttable presumption, not a conclusive legal fiction, and it remained controlled by the main provision rather than enlarging it independently. For levy of penalty, a separate finding of concealment under clause (c) was not required, but the authority had to determine under the Explanation whether the dealer failed to show that the shortfall was not due to gross or wilful neglect.

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Issues: (i) Whether, in the absence of any recorded reservation or indication of an intention to impose penalty, proceedings for penalty under section 36(2)(c) of the Bombay Sales Tax Act, 1959 could be initiated after the assessment order and by a successor authority. (ii) Whether the Explanation to section 36(2)(c) creates a legal fiction or only a rebuttable presumption, and whether it enlarges the scope of the main provision. (iii) Whether, before initiating or levying penalty under section 36(2)(c) read with the Explanation, a finding under clause (c) of concealment or furnishing of inaccurate particulars is necessary, or only a finding under the Explanation is required.

Issue (i): Whether, in the absence of any recorded reservation or indication of an intention to impose penalty, proceedings for penalty under section 36(2)(c) of the Bombay Sales Tax Act, 1959 could be initiated after the assessment order and by a successor authority.

Analysis: The initial part of section 36(2) makes the Commissioner's satisfaction a jurisdictional fact and requires that it appear to the authority while assessing. The provision is not independent of the main section and must be read harmoniously with it. The record must show that the requisite satisfaction existed during assessment; mere existence of material on which a later authority may infer concealment is not enough. On that construction, where no reservation or indication appears in the assessment proceedings, penalty proceedings cannot be started later, and a successor authority cannot initiate them in that situation.

Conclusion: The answer is against the Revenue and in favour of the assessee; post-assessment initiation was not permissible on those facts, and the successor authority was not competent to initiate such proceedings.

Issue (ii): Whether the Explanation to section 36(2)(c) creates a legal fiction or only a rebuttable presumption, and whether it enlarges the scope of the main provision.

Analysis: The Explanation deems a dealer to have concealed turnover or furnished inaccurate particulars when the tax paid falls below the prescribed percentage, but the deeming clause is expressly qualified by the dealer's right to prove absence of gross or wilful neglect. That qualification is inconsistent with a complete legal fiction. The proper character of the provision is therefore that of a rebuttable presumption, not a conclusive fiction. The Explanation must also be read as tacked to and controlled by the main section, and cannot be treated as a wholly independent enactment enlarging the subject-matter beyond the penalty provision itself.

Conclusion: The answer is in favour of the assessee; the Explanation was held to be a rebuttable presumption and not a legal fiction, and it was not treated as a separate, free-standing enlargement of the main provision.

Issue (iii): Whether, before initiating or levying penalty under section 36(2)(c) read with the Explanation, a finding under clause (c) of concealment or furnishing of inaccurate particulars is necessary, or only a finding under the Explanation is required.

Analysis: For initiation of proceedings, the authority need not first record a finding in the precise terms of clause (c); the jurisdictional satisfaction may be reached on the basis of the statutory presumption created by the Explanation. For imposition of penalty, once the statutory conditions under the Explanation are attracted, the authority must determine whether the assessee has discharged the burden of proving that the shortfall was not due to gross or wilful neglect. The finding required at the penalty stage is therefore a finding under the Explanation, not an independent finding of concealment under clause (c). The assessee's burden is one of preponderance of probabilities.

Conclusion: The answer is against the assessee on the requirement of a clause (c) finding, but in favour of the assessee to the extent that the authority must still record a finding on absence of gross or wilful neglect under the Explanation before penalty can be imposed.

Final Conclusion: The penalty provision was construed as a rebuttable-presumption mechanism governed by the main assessment framework, requiring jurisdictional satisfaction during assessment and a specific finding under the Explanation at the penalty stage, but not a separate clause (c) finding for levy of penalty.

Ratio Decidendi: A statutory deeming clause that is expressly rebuttable is a rebuttable presumption, not a legal fiction; it must be read with the main provision, and penalty can be sustained only on the footing and within the limits created by that rebuttable presumption and the jurisdictional satisfaction required by the statute.

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