Home Vacation Planning What Should Know
The local currency in Samosir Island is Rp which is abbreviated as Rupiah. Exchange rates may vary slightly at money changers and hotels.

Credit cards are not accepted almost everywhere on the island, most of them accept only cash in rupiah. You need to bring cash money in to the island or you convert your money in to rupiah at the hotels or at the money changers in the island.

ATM machine can be found in the main land Parapat, if you are already in Tuk Tuk. Samosir Island just take a boat and go to Parapat.

Source : http://id.wikipedia.org/wiki/Berkas:Rupiah.jpg