IC 6-3-1-12: "Resident"

Sec. 12. The term "resident" includes (a) any individual who was domiciled in this state during the taxable year, or (b) any individual who maintains a permanent place of residence in this state and spends more than one hundred eighty-three (183) days of the taxable year within this state, or (c) any estate of a deceased person defined in (a) or (b), or (d) any trust which has a situs within this state.