(1) For the Indian Administrative Service and the Indian Police Service, a candidate must be a citizen of India.
(2) For other services, a candidate must be either:—
(a) a citizen of India, or (b) a subject of Nepal, or (c) a subject of Bhutan, or
(d) a Tibetan refugee who came over to India before 1st January, 1962 with the intention of permanently settling in India, or
(e) a person of Indian origin who has migrated from Pakistan, Burma, Sri Lanka, East African countries of Kenya, Uganda, the United Republic of Tanzania, Zambia, Malawi, Zaire, Ethiopia and Vietnam with the intention of permanently settling in India.
Provided that a candidate belonging to categories (b), (c), (d) and (e) shall be a person in whose favour a certificate of eligibility has been issued by the Government of India.
Provided further that candidates belonging to categories (b), (c) and (d) above will not be eligible for appointment to the Indian Foreign Service. A candidate in whose case a certificate of eligibility is necessary, may be admitted to the examination but the offer of appointment may be given only after the necessary eligibility certificate has been issued to him/her by the Government of India.
(ii) Age Limits:
(a) A candidate must have attained the age of 21 years and must not have attained the age of 32 years.
(iii) Minimum Educational Qualifications:
The candidate must hold a degree of any of Universities incorporated by an Act of the Central or State Legislature in India or other educational institutions established by an Act of Parliament or declared to be deemed as a University Under Section-3 of the University Grants Commission Act, 1956, or possess an equivalent qualification.
(iv) Number of attempts:
(a) Every candidate appearing at the examination who is otherwise eligible, shall be permitted six attempts at the examination.
(v) Physical Standards:
Candidates must be physically fit according to physical standards for admission to Civil Services Examination, 2017 as per guidelines given in Appendix-III of Rules for Examination published in the Gazette of India Extraordinary dated 22nd February, 2017.