Do Australia passport holders need a visa to visit TZ?

Yes, Australian passport holders need a visa for Tanzania. The recommended option is the Tanzania Tourist eVisa (Ordinary Visa), applied for online before travel: single entry, up to 90 days, USD 50. Visa on arrival is also available at major airports for the same fee, but Tanzanian immigration recommends applying online in advance. Australia is not on Tanzania's visa-exemption list, so an Australian ordinary passport holder needs a visa for tourism. The cleanest route is the electronic Ordinary (Tourist) Visa via the official portal visa.immigration.go.tz: it is single entry, valid for stays of up to 90 days, and costs USD 50 (US citizens are the exception, requiring a USD 100 multiple-entry visa). The official guideline states applications are processed within ten days, though approvals often arrive in a few business days; apply at least 2 weeks before departure. Australians are also eligible for single-entry visa on arrival at main ports of entry (e.g. Kilimanjaro, Julius Nyerere, Abeid Amani Karume in Zanzibar) for USD 50 cash, but immigration advises using the online platform and there is no guaranteed right of entry without it. The passport must be valid at least 6 months with one blank page, and proof of a return/onward ticket is required. Note a Zanzibar-specific rule: travellers to Zanzibar must buy mandatory inbound travel insurance from the Zanzibar Insurance Corporation (ZIC). Tanzania is in East Africa and is not part of the Schengen area, so Schengen/ETIAS rules do not apply.