Reassessment under section 147(a) requires real nondisclosure of material facts; later documents repeating earlier disclosure do not justify reopening.

Reassessment under section 147(a) requires a real failure by the assessee to disclose fully and truly all material facts necessary for assessment. The Court held that the later trust deeds relied on by the Revenue merely repeated facts already disclosed in the earlier deeds and original assessments, so their non-production did not amount to a material omission. A later change of view on the same material cannot justify reopening a completed assessment. The reassessment notice was therefore without jurisdiction and the Revenue's appeal failed.

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Issues: Whether reassessment under section 147(a) of the Income-tax Act, 1961 was valid on the ground that the assessee had failed to disclose fully and truly all material facts necessary for assessment for the relevant years.

Analysis: The notices under section 148 were founded on the Income-tax Officer's view that two trust deeds executed in 1957, which were not produced during the original assessments, showed that certain women described as wives in earlier trust deeds were in fact legally wedded wives and that their children were legitimate, thereby justifying reopening. The Court held that the relevant factual position had already been disclosed through the earlier trust deeds of 1950, which contained the same descriptions, and the later deeds merely repeated what had already been before the department. Non-production of the 1957 deeds therefore did not amount to omission or failure to disclose material facts. The Court further held that reassessment cannot be used to correct a completed assessment merely because the officer later forms a different view on the same material.

Conclusion: The condition precedent for invoking section 147(a) was not satisfied and the reassessment proceedings were without jurisdiction. The decision was against the Revenue and in favour of the assessee.

Final Conclusion: The appeals failed, and the restraint on reopening the completed assessments was sustained.

Ratio Decidendi: Reassessment is permissible only when there is a real failure by the assessee to disclose fully and truly all material facts necessary for assessment; mere later reliance on additional documents that only repeat already disclosed facts does not confer jurisdiction to reopen a completed assessment.

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