Below are main about tourist visa requirements for Nepal.

• Visa fee required obtaining Tourist visa from Nepalese diplomatic agencies and entry points:
• US$ 25 or equivalent foreign currency for Tourist Visa with Multiple Entry for 15 days.
• US$ 40 or equivalent foreign currency for Tourist Visa with Multiple Entry for 30 days.
• US$ 100 or equivalent foreign currency for Tourist Visa with Multiple Entry for 100 days.
• Regardless of the provision stated i 1 and 2, tourists with passport from South Asian Association for Regional Cooperation (SAARC - Inclusive of India, Bhutan, Bangladash, Pakistan, Sri-Lanka and Maldives) nations aren't requited to pay visa for for 30 days. Chinese citizen are requested to apply in Nepalese Embassy or other Nepalese diplomatic missions as there is no provision of on arrival visa for them.
• Indian nationals do not require visa to enter into Nepal.

Fee required extending duration of visa or renewing visa:

• US$ 2 or equivalent Nepalese currency per day for extension.
• Additional US$ 20 or equivalent Nepalese currency on visa fee as per 2(b),if Multiple Entry facility is required for the extended period.
• If foreign visitors that haven't renewed their visa & want to renew their visa , they have to pay additional Nepalese currency equivalent to US$ 3 on the regular visa extension fee.
• Foreign visitors who have overstayed their visa period of 150 days without extension are required to pay visa fee as per provision in 2(c) and punishment as per Clause 10 sun-clause 4 of immigration Act 2049.
• Regardless of provision stated in 2(a), 15 days is counted as minimum extension period visa fee is charged accordingly. For extension period more than 15 days, visa fee is charged as per the provision of 2(a). 
• Tourist visa can be extended for a maximum period of 150 days in a single visa year (January – December).

Transit visa:
Transit visa for one day can be obtained from Nepal's immigration offices at the entry points upon the production of departure flight ticket via Tribhuvan International Airport in Nepal, by paying US $5 or equivalent convertible currency.
Nepal Visa can be obtained from Nepal Embassy / Consulate Offices in your country, or upon arrival at Kathmandu airport. It is also possible to obtain the visa from other point of entries (at border). You'll need 1 photo each time.
For foreign investors business visa with multiple entry facility for a period of one year and five years can be obtained from the Department of Immigration on the recommendation of Department of Industry and Commerce by paying US $ 100 and US $ 250 or equivalent convertible foreign or Nepali currency.

Please note you'd better take your round-way air-ticket in and out of Nepal, several passport pictures with you when purchasing Nepal entry transite visa.

Attention:
Visa information mentioned above was collected by Pan-Tibet Travel, we tried our best to make it as accurate as possible, thus we accept no responsibility for any loss, disruption or inconvenience sustained by anyone using this information.