Yes, in 2026, U.S. citizens are required to have a visa to enter the United Republic of Tanzania for tourism or business. The most convenient way to obtain this is through the Tanzania e-Visa system, which should be applied for at least two to three weeks before travel. For U.S. citizens, the standard "Ordinary Visa" (single entry) is generally replaced by a mandatory Multiple Entry Visa, which costs $100 USD. This visa is valid for 12 months and allows for stays of up to 90 days at a time. While "Visa on Arrival" is still technically available at major entry points like Kilimanjaro International (JRO) and Julius Nyerere International (DAR), it is discouraged due to long queues and the potential for administrative delays. Travelers heading specifically to Zanzibar should also be aware that as of late 2024, the government implemented a mandatory $44 Inbound Travel Insurance requirement for all foreigners, which must be purchased from the Zanzibar Insurance Corporation (ZIC) website prior to arrival, separate from your standard Tanzanian visa.