Reassessment requires specific material on nondisclosure; general suspicion cannot justify reopening, and development rebate withdrawal needs the statutory route.

Reopening under section 147(a) required material with a direct nexus to the assessee's own failure to disclose fully and truly all material facts; general statements about suspected bogus hundi financiers, without specific linkage to the assessee's credits, were insufficient. On that basis, the reassessment notices were invalid. The document also notes that withdrawal of development rebate granted in earlier assessment years was governed by the separate rectification machinery under section 35(11) of the Indian Income-tax Act, 1922, and that this specific statutory route could not be circumvented through reassessment proceedings under section 147(a). The assessee therefore succeeded on both issues.

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Issues: (i) Whether reassessment notices issued under section 147(a) of the Income-tax Act, 1961, were validly founded on material showing failure by the assessee to disclose fully and truly all material facts; (ii) Whether development rebate granted in the assessment years 1957-58 and 1958-59 could be withdrawn in reassessment proceedings under section 147(a).

Issue (i): Whether reassessment notices issued under section 147(a) of the Income-tax Act, 1961, were validly founded on material showing failure by the assessee to disclose fully and truly all material facts.

Analysis: Reopening under section 147(a) required not merely escapement of income but also a reasoned belief that such escapement resulted from omission or failure to disclose fully and truly all material facts necessary for assessment. The material relied on by the department consisted mainly of general statements and circulars about suspected bogus hundi financiers, without any specific link to the assessee's transactions at the time the reassessments were initiated. The assessee had produced account books, hundis, and creditor details during the original assessments, and the later statements did not directly implicate his credits. The existence of jurisdiction depended on relevant material having a rational connection with the belief formed, and vague or remote material was insufficient.

Conclusion: The reassessment notices were not validly issued under section 147(a); the issue is decided in favour of the assessee.

Issue (ii): Whether development rebate granted in the assessment years 1957-58 and 1958-59 could be withdrawn in reassessment proceedings under section 147(a).

Analysis: The withdrawal of development rebate was governed by the special machinery for rectification on transfer of the asset within the statutory period under section 35(11) of the Indian Income-tax Act, 1922. That consequence could not be imported into reassessment proceedings under section 147(a) when the specific time-limit and statutory route for such withdrawal had already become unavailable. The reassessment power could not be used to do what the statute separately and specifically regulated under the rectification provision.

Conclusion: The development rebate could not be withdrawn in the reassessment proceedings; the issue is decided in favour of the assessee.

Final Conclusion: The reference was answered against the revenue on both questions, and the assessee succeeded in resisting both the reassessment jurisdiction and the withdrawal of development rebate.

Ratio Decidendi: For reopening under section 147(a), the material must have a direct and relevant nexus with the assessee's own failure to make full and true disclosure; vague or general information unconnected with the assessee's transactions cannot found jurisdiction, and a separate statutory remedy for withdrawal of allowance cannot be bypassed through reassessment proceedings.

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