Currency is Pacific franc (CFP)
1 Euro=120CFP

Banks takes a global commission (around 3,50 Euros) in change transactions. There are a lot of cash dispensers at Papeete, but not in other islands.

Every touristic island has one or more bank offices.
Attention, you can't withdraw more than 300 Euros a week.
In small hotel you can't pay with card.

Tip is not so usual.

Prices are fixed, except for black pearls, with you can haggle