Cesarini is important for further defining gross income under Section 61(a). It extends gross income to treasure troves and requires that taxpayers list the income in the year in which it is reduced to undisputed possession. Cesarini alerts taxpayers to the notion that many things may constitute gross income even though they are not explicitly identified in the Tax Code. Taxpayers should consult all sources, including Treasury Regulations, before making assumptions about what constitutes income.
