Best way with money is to bring sufficient cash in Euro. You can exchange the Euro bills into the national currency Rupiah (IDR) everywhere in Bali. Find more information about money exchange here.

Caution: Do not exchange money at shady moeny changers! Always count and calculate again immediately!

By now there are lots of ATM in Bali where you can withdraw money in local currency using your Visa or MasterCard. Getting money with EC card (Cirrus or Maestro) is only possible at a few ATM.