Questione giuridica chiave
Whether the federal direct tax assessment could be revised because of the severance payment.
Decisione estratta
No. The taxpayers' mistake in completing the return was not a ground for revision, since they knew of the severance payment and could have raised the issue in ordinary objection proceedings.
Motivazione estratta
Art. 147 LIFD requires newly discovered decisive facts, overlooked decisive facts, or crime/delict. An error of law or a taxpayer's own omission is not a revision ground; under Art. 147(2) LIFD, revision is excluded when the matter could have been raised earlier with reasonable diligence.