The unit of currency is the Burundi franc (BFr). Many mid and top end hotels quote prices in US Dollars but payment in local currency is always accepted. A few ATMs in Bujumbura accept foreign Visa cards (and occasionally Mastercard) but when travelling outside of the city take all the cash you might need with you. In the capital a few mid and top end hotels accept payment by credit card but don't rely on this. There are plenty of currency exchange bureaus (forex bureaus) around the Central Market and along Chaussée Prince Rwagasore. Travellers cheques are next to useless.