The currency of Tanzania is the Tanzania shilling (TSh or TZS). Most banks in major cities have ATMs, but they aren’t always reliable. Credit cards are accepted at some major hotels, but a surcharge will usually be added. We recommend that you don't rely on credit cards other than as a backup.
Hotels, and some restaurants and shops in popular visitor areas will also accept payment in US dollars, but due to a spate of forgeries, nobody in Tanzania, including banks, will accept US$100 notes, so it’s best to carry smaller denominations.