Inner Line Permit
Inner Line Permit (ILP) is an official travel document issued by the Government of India to allow inward travel of an Indian citizen into a protected area for a limited period. It is obligatory for Indian citizens from outside those states to obtain a permit for entering into the protected state. The document is an effort by the government to regulate movement to certain areas located near the international border of India. This is an offshoot of the Bengal Eastern Frontier Regulations, 1873, which protected Crown's interest in the tea, oil and elephant trade by prohibiting "British subjects" from entering into these "Protected Areas" (to prevent them from establishing any commercial venture that could rival the Crown's agents). The word "British subjects" was replaced by Citizen of India in 1950. Despite the fact that the ILP was originally created by the British to safeguard their commercial interests, it continues to be used in India, officially to protect tribal cultures in northeastern India. There are different kinds of ILP's, one for tourists and others for people who intend to stay for long-term periods, often for employment purposes.
ILP's valid for tourism purposes are granted as a matter of routine.
States which require permit
- Arunachal Pradesh — Issued by the secretary (political) of the Government of Arunachal Pradesh. It is required for entering Arunachal Pradesh through any of the check gates across the interstate border with Assam or Nagaland. An ILP for temporary visitors is valid for 7 days and can be extended, while one for those taking employment in the state and their immediate family members is valid for a year. The Arunachal Pradesh government is planning to implement a permit-on-arrival system.
- Mizoram — Issued by the Government of Mizoram. It is required for entering Mizoram through any of the check gates across the inter-State borders. Typically, a "Temporary ILP" is issued to visitors, which is valid for 7 days, and can be extended another 15 days, with the possibility of extending it to one month in exceptional circumstances. However, with the sponsorship of a local resident or government department, a "Regular ILP" can be procured, which is valid for 6 months and can be renewed twice for another 6 months each. If arriving by air, an ILP can be obtained on arrival at Lengpui Airport in Aizawl.
- Nagaland — Issued by the Government of Nagaland.
An ILP was previously required for certain parts of the Leh district in Jammu and Kashmir. This requirement was abolished by a circular issued by district magistrate which took effect from 1 May 2014, although foreign nationals are required to get Protected Area Permit for this region. But the ILP was implemented again in Leh in 2017. There are also ongoing demands for the introduction of ILP in Meghalaya, Manipur and Andaman & Nicobar Islands to regulate entry of outsiders into the state. 
- "Inner Line Permit (ILP) System - General Knowledge Today".
- Website of Lower Dibang Valley State of Arunachal Pradesh, http://roing.nic.in/permit.htm
- Entry procedure, State of Arunachal Pradesh, http://arunachalpradesh.nic.in/enter_ap.htm
- Entry procedure, State of Mizoram, http://mizoram.nic.in/more/ilp.htm
- Indians outsiders in their own country
- Manipur People's Protection Bill 2018
- No need for ‘Inner Line Permit’ for domestic tourists visiting Leh"Archived copy". Archived from the original on 8 August 2014. Retrieved 30 July 2014.CS1 maint: Archived copy as title (link)
- "Ladakh Inner Line Permit (ILP) Implemented Again". 19 April 2017.
- "Massive rally in Shillong backs ILP - Thousands gather at students' field to support cause". www.telegraphindia.com.