Omission to disclose material facts requires proof of nondisclosure of primary facts; speculative evidential gaps do not justify reassessment.

Reassessment under the statutory omission ground requires proof that the assessee omitted or failed to disclose primary facts necessary for assessment; here the assessee had disclosed the primary facts that rents were not received because properties were requisitioned and compensation fixation proceedings were pending, and the assessing officer made an estimate without further inquiry. Speculative references to correspondence or missing evidential particulars (area, municipal assessments, hypothetical prior rents, hutment dimensions) do not establish nondisclosure of primary facts. Therefore the statutory prerequisites for reassessment were not met and reassessment is unjustified.

---

---

Issues: (i) Whether, on the facts and circumstances, the Income-tax Appellate Tribunal was right in holding that the case fell under Section 34(1)(a) of the Income-tax Act, 1961 permitting reassessment for the years 1950-51 to 1954-55.

Analysis: The question turns on whether there was an omission or failure by the assessee "to disclose fully and truly all material facts necessary for his assessment" within the meaning of Section 34(1)(a). The record of the original assessment shows that the assessee disclosed the primary facts that he was not receiving rent because the properties were requisitioned and that proceedings for fixation of compensation were pending before the Collector; the Income-tax Officer made an estimate without pursuing further inquiry. The distinction between primary facts and other evidential matters is applied: primary facts must be disclosed by the assessee, whereas details such as area, municipal assessments, or hypothetical prior rents are evidential and not necessarily material facts required to be disclosed. The Appellate Assistant Commissioner's reasons (speculative correspondence, failure to give nature and dimensions of hutments, or prior rent "if any") do not establish non-disclosure of primary facts. The Tribunal did not address whether the statutory requirements of Section 34(1)(a) were fulfilled and treated the matter as mere substitution of figures for earlier estimates, which is not supported by the record. The assessments under Section 9 (income from property) and later under Section 12 (income from other sources) involve different material facts, and the department did not show omission of the primary facts necessary for the original assessments.

Conclusion: The requirements of Section 34(1)(a) of the Income-tax Act, 1961 were not fulfilled; reassessment under Section 34(1)(a) for the years 1950-51 to 1954-55 is not justified. The question is answered in the negative in favour of the assessee.

Ratio Decidendi: Where an assessee has disclosed the primary facts necessary for assessment (here, non-receipt of rent and pending proceedings for fixation of compensation), reassessment under Section 34(1)(a) requires proof of omission or failure to disclose such primary facts; speculative or evidential omissions do not suffice to invoke Section 34(1)(a).

---