Performing the functions involved in the process of issuing National Identity Cards the sole document that establishes the identity of persons in order to assist in maintenance of law and order in the country to meet the challenges of the 21st century.
 
Establishment of personal identity of all Sri Lankans is a prerequisite for good governance and national development of the country.
 
Registration of eligible residents who have completed 16 years of age and issue of new National Identity Cards to them in terms of the section 9 of the Registration of Persons Act No.32 of 1968, correction of entries in National Identity Cards on request in terms of section 16 and issue of duplicates for lost National Identity Cards, in terms of section 17 of the Act.