Questão jurídica principal
Whether an appeal against a zero income tax assessment is admissible despite no direct tax burden.
Decisão extraída
A zero assessment can still be challenged if it prejudices the taxpayer in another legal field, here the premium-subsidy calculation.
Fundamentação extraída
Standing depends on a protected interest and a disadvantage caused by the dispositive part of the decision. Although the court generally refuses appeals against zero assessments, that practice must be departed from where the assessment is used as a basis in another area of law and the taxpayer is actually harmed.