The Bolivian (Bs), the monetary unit of Bolivia. At the present time, coins of 10, 20, and 50 cents and of 1 and 2 Bs are in circulation; also, bills of 5, 10, 20, 50, 100 and 200 Bs.
In the main cities of the country, the traveler will be able to change foreign currency -mainly US dollars- without any inconvenience. In La Paz, Sucre, Cochabamba and Santa Cruz de la Sierra, there are many casas de cambio - that are safer and offer a better guarantee in the transaction- and street cambistas that are not completely reliable.

Credit cards: Mayor credit cards are accepted in the most important hotels, restaurants and commercial centers, however the same thing doesn't happen in the smallest establishments neither in the remote towns. In general, Mastercard, Diners, Visa and American Express are very well accepted. It is recommendable to consult with your travel agent about the possibilities of use of credit cards.

Traveler checks: In the main cities of Bolivia, the casas de cambio and some other establishments accept travelers checks, reason why selling them won't be any difficult; but, the situation is different in the smallest towns, for what is recommended to take cash.
One more thing, if you plans to take travelers checks, the best thing will be to have them issued in American dollars.