Visa & Passport
No visa is required for stays of less than 3 months for citizens of Namibia, Romania, Rwanda, Hong Kong, Malaysia and all commonwealth member states (except the United Kingdom, Canada, Bangladesh, New Zealand, Nigeria, India & South Africa). A Tourist Visa costs US$50 or US$100 for a three-month single entry and a three-month double entry visa, respectively. The visa can be obtained upon landing in Dar es Salaam, Kilimanjaro, Mwanza and ports of entry. Be advised that the wait can be especially long if your flight arrives at the same time as other international flights. Visas are valid for the duration from the date of issuance. However, obtaining a visa before arrival is highly recommended. Holders of a US passport can only obtain a US$100 multiple-entry visa. US travellers departing from the U.S. can pay US$20 for a rush service, which takes three working days. The website of Tanzania Embassy in the U.S. gives the current requirements, . Visas may also be obtained from any of Tanzania's diplomatic mission abroad. Visa when entering Zanzibar is US$50 and US$25 when leaving.
Tanzania has extra requirements for anyone who is not visiting for tourism purposes. Any sort of business visit requires a temporary work permit called a CTA (Carrying on Temporary Assignment). This costs $200 and required filling out a form. Up to 6 passport sized photos will also be required. Not having this can cause problems. Entering Zanzibar for example will be difficult without it if you are not a tourist. See the Tanzania Immigration Service web site for more details .
Note that when crossing by ground at the Namanga border crossing (e.g. traveling from Nairobi, Kenya to Arusha, Tanzania), you will need to cross the border on foot. Scammers in the no man's land between the border control offices of Kenya and Tanzania will try several scams, including offering outrageously poor currency exchange rates and pretending to be officials selling Tanzania visa stamps. Those attempting to sell the Tanzania visa stamps will act official and ask to see your passport, then they will place an item (a small Tanzanian bank note) in your passport, close the passport, and request the visa-on-arrival fee. Only do business with the immigration offices and adjacent banks, located in established government buildings. Do not stop or interact with people in the no man's land in between.