Department of Border Management
Department of Border Management, dealing with management of borders, including coastal borders, strengthening of border guarding and creation of related infrastructure, border areas development, etc
Department of Internal Security
Department of Internal Security, dealing with the Indian Police Service, Central Police Forces, internal security and law & order,insurgency, terrorism, naxalism, activities of inimical foreign agencies, terrorist financing, rehabilitation, grant of visa and other immigration matters, security clearances,"Protection of Human Rights Act and also matters relating to National integration and Communal Harmony and Ayodhya", etc
Department of J & K Affairs
Department Jammu & Kashmir Division deals with the Constitutional provisions with respect to the State of Jammu and kashmir, administration of the Armed Forces(J&K) Special Powers Act,1990 (21 of 1990) and all matters relating to the State of Jammu and Kashmir, including counter terrorism within Jammu and Kashmir and coordination in respect of subjects/matters specifically allotted to any other Ministry/Department like coordination with Ministry of Defence as regards manning and managing the line of control between India and Pakistan, but excluding those with which the Ministry of External Affairs is concerned. The Division also coordinates with various Ministries/Departments, primarily concerned with development and welfare activities in Jammu and Kashmir.
Department of Home
Dealing with the notification of assumption of office by the President and Vice-President, notification of appointment/resignation of the Prime Minister, Ministers, Governors, nomination to Rajya Sabha/Lok Sabha, Census of population, registration of births and deaths, etc
Department of Official Language
Dealing with the implementation of the provisions of the Constitution relating to official languages and the provisions of the Official Languages Act, 1963.
Department of States
Dealing with Centre-State relations, Inter-State relations, administration of Union Territories, Freedom Fighters’ pension, Human rights, Prison Reforms, Police Reforms, etc.
The Department of Internal Security, Department of States, Department of Home, Department of Jammu and Kashmir Affairs and Department of Border Management do not function in watertight compartments. They all function under the Union Home Secretary and are inter-linked. There is a designated Secretary for Department of Border Management and Internal Security also.