VISA: 
All tourist visiting Tibet requires valid China visa & a special Alien Travel Permit which they can obtain only by joining tours organized by recognized travel agencies. Those who arrive in Kathmandu with a Chinese visa issued by Chinese Consulates outside of Kathmandu will find it useless for entry into Tibet. 

Visa regulations change often.  Presently as per official regulation a minimum 5 pax group is required for travel into Tibet.  However, it is sometimes possible to organize private tours for less than 5 pax. 

Diplomatic passport holders must get clearance from Beijing for travel into Tibet which often takes long time. It is advisable to travel on non-diplomatic passports, if you have one. 

We require at least 7 days notice to process your Tibet visa via Lhasa & at least 4 days in Kathmandu for the Chinese Embassy to handle your passport. Visa can also be issued in less than 3 days upon payment of visa rush fees. Normal group visa fee is USD 26 & visa rush fee is another USD 17. Individual visa fee is USD 33 & rush fee is another USD 33. 

60 days Nepal visa is readily available at the Tribhuvan International Airport or any other land entry points on payment of USD 30 visa fee. Those travelling to Tibet & Bhutan  or Sikkim & transiting through Nepal must obtain multiple entry visa & cost USD 50.