The document discusses the different types of residential statuses under the Indian Income Tax Act which determine the scope of taxability of an individual's income. There are three residential statuses: resident, ordinary resident, and non-resident. A resident is someone who is in India for at least 182 days in the previous year or at least 60 days in the previous year and 365 days in the last 4 years. An ordinary resident meets one basic condition and both additional conditions of being in India for at least 2 of the last 10 years and at least 730 days in the last 7 years. Anyone who does not meet the criteria is a non-resident.