Questão jurídica principal
Whether the 1999 option gain could be taxed by way of back tax under the direct federal tax rules.
Decisão extraída
Yes. The omitted 1999 income from the exercise of employee options was discoverable only after the original assessment because the taxpayer failed to disclose the relevant facts sufficiently; back taxation was lawful.
Fundamentação extraída
Back tax under Art. 151 DBG requires new facts or evidence unknown to the tax authority at the time of assessment. The taxpayer must fully and truthfully disclose relevant facts and, if uncertain, point out the uncertainty. Here the tax return and wage statement did not correctly reveal that the decisive option gain arose in 1999, and the taxpayer did not submit the employer confirmation in time. The authority was therefore not charged with knowledge of the omitted income.