Some info on the T-bit Travel Permits (TTP)
T-bit Travel Permits (TTP) is necessary for foreigners to get into T-bitan Autonomous Region, Explore T-bit Team can apply it for you and usually it takes only 3 working days, but if you are traveling into restricted areas, then you need more additional permits and documents which will take longer time. Once you confirm your trip with us, we request you to send us clear scan copies or photo of your passports and Chinese visa at least 20 days in advance by email as it is required for applying T-bit Travel Permits, when it is issued we will send either a copy of original of the permit to your hotel in China. If you will fly into T-bit then we will send the original permit to your hotel in China as you need it to board the flight, if you will take the train into T-bit, then we will send a copy of the permit by email and you can bring a copy to board the train.
Note: Diplomats, Journalists, professional media photographer and government officials are not able to issue their travel permit through ordinary travel agencies. They are only able to travel T-bit under the arrangement of Foreign Affairs Department, Economic Development Committee, etc.

Both Alien's Travel Permit and Military Permits are required if your tour cover or pass through a restricted area, ATP is easily obtainable at your arrival as it should be applied with your original passports, where as Military Permit should be applied along with the T-bit Travel Permit in advance and it will take about 7 working days to issue.
Documentations to enter into T-bit from Nepal.
Travel from T-bit from Nepal
by land or air: If you plan to travel to T-bit from Nepal, you must get your T-bit group visa from the Chinese embassy in Kathmandu, whether you already have a Chinese visa or not, T-bit group visa is compulsory for all tourist to enter T-bit from Nepal. TheT-bit Group Visa is a A4 size sheet of paper, with the name, sex, nationality, passport number, date of birth and occupation of each member of your group listed. The dates of entry and exit are precisely recorded. Usually, the visa is valid only for the length of the trip you have booked but it's possible to extend the visa for few additional days, but only for staying in L-hasa. There will be two original copies of the T-bit Group Visa, one for immigration at the entry and another for the exit. ExploreT-bit Team can easily help you to obtain the T-bit Group visa through our partner agent in Kathmandu. We highly recommend you to don’t apply for individual Chinese visa in your country if you decided to travel to T-bit from Nepal, since when you apply for the group visa to entering T-bit, the Chinese embassy will cancel your individual Chinese visa.

Below are the cost of group visas for different nationalities;
Category; Number of working days to obtain it; Cost for American passport holders Other nationalities;
Normal; 5 days USD140 USD50
Urgent 3 days USD144 USD65
Top Urgent 1 day USD175 USD85
Note; T-bit group visa is only applicable on Monday, Wednesday and Friday(three days in a week). Also the local Nepalese agencies charge USD20-50 per person service charge according to the number of people in the group.

FAQs
What documents do I need to send you to apply for TTP?
Once you have confirmed your tour with us, we need you to send us clear scanned copies of Passportsand China Visas for every member of the group to apply for the T-bot Travel Permit. If your China Visa is not an “L” visa, then you must also provide additional documents such as student certificates, work permits, residence permits and so on.

How long does the T-bit Permit application process take?
Normally, T-bit permits can be issued in 3 working days, but if your tour itinerary covers some restricted or unopened area like EBC, Mt. Kailash, Sichuan-T-bit highway and Yunnan-T-bithighway, you may need several different permits which could take around 7 working days.

What kind of trip requires the Military Permit, PSB Permit a
Military and PSB Permits are only needed for those trips going through sensitive areas or a border region; these trips include the Mt. Kailash trip, Sichuan-T-bit Overland Tour, T-bit-Kashigar Overland Tour and so on. Alien's Travel Permits are necessary if you are going to Mt. Everest Base Camp, Samye Monastery (southern part of T-bit ), Nyinchi (Eastern part of T-bit) and Mt. Kailash, but these can be issued from the local PSB just before you enter the region.

How do I obtain the T-bit Travel Permit?
To obtain T-bit Travel Permits, it is necessary to make your travel arrangements through a genuine local travel agency, providing clear scanned copies of you passport and China visa. Please note that it’s impossible to board any flights or trains to T-bit without the Travel Permit. The permits themselves specify every destination and all the towns that you would visit during the tour and cannot be changed once you have arrived in T-bit; therefore, be sure to detail all possible destinations as well as the route before you decide your trip. It usually takes 3 working days for the T-bit Travel Permit to be issued. It can take 5 to 7 days if your particular tour requires the Military Permit and PSB permit.

What documents do I need to visit T-bit?
To visit T-bit you should have a valid passport, a Chinese visa and a T-bit Travel Permit, also called a T-bit Entry Permit or T-bit Visa. The T-bit Travel Permit is obtained from the Tibet Tourism Bureau.