The currency that is used in Tahiti and Bora Bora is CFP or Pacific Franc Currency.
The Islands of Tahiti is the the Pacific franc (international abbreviation: XPF).
An interesting feature of this currency is that its exchange rate with the euro never varies and is set at 100 F. CFP = 0.838 Euros (or 1 Euro = 119.33 F. CFP).
The currency that Tahiti uses is the CFP Franc Currency.
The CFP franc is the currency used in the French overseas collectivities of French Polynesia, New Caledonia, and Wallis and Futuna.
The initials CFP originally stood for colonies françaises du Pacifique.
This was later changed to Communauté financière du Pacifique and then to its present term, Change franc Pacifique.
The US Dollar can be used in some places of Tahiti.
Although there's an exchange rate when using the US Dollar In Tahiti.
Some Tourist Places in Tahiti do accept the US dollar however you'll be dealing with a very poor exchange rate making your US dollars worth less in Tahiti than it would be in the USA.
It's best to exchange your US dollars for Tahiti Currency at the Tahiti International Airport for the best exchange rates and to get the most for your USA dollars and currency.
The bank in Papeete can also exchange your US dollars for Tahiti Currency as well and they also have a much better exchange rate than using the US dollars in Tahiti.
When I went to Tahiti I exchanged my US dollars for Tahiti Currency at the Tahiti International Airport and I get the best exchange rate for my US currency.