A common currency makes many things easier, such as comparing prices between countries, travelling and trade, since fees for exchanging money and exchange rate fluctuations having been eliminated.
Ühisraha muudab paljud asjad lihtsamaks – näiteks hindade võrdlemise eri riikides, reisimise ja kauplemise, kuna puudub rahavahetustasu ning muutuv vahetuskurss.