A NRI is a person resident outside India who is either a citizen of India or a person of Indian origin. A NRI is an Indian Citizen who has migrated to another Country. For all official purpose the Government of India considers Indian National away from India for more than 182 days, in a year.
i) held an Indian Passport at any time, or
ii) who or whose father or paternal grand father was a citizen of India by virtue of the Constitution of India or the Citizenship Act, 1955.