In Finland everything is paid for in Euros. European credit cards are accepted as well as other credit cards. Nonetheless, we recommend that you bring with you Euros in cash, because the closest cash machine is 40 klms from Äkäslompolo.
Finland is one of the cheapest of the Scandinavian countries. When you do shopping for food and other necessities, you will find that the prices are no different than in the rest of western Europe. When you go out to dinner, you will pay about 20% more and maybe even more than that if you buy alcoholic beverages.