The official currency of Russia: the ruble, but the ruble fluctuates greatly. It is recommended to bring dollars or euros. Dollars and euros are the most popular foreign currencies, which can be freely exchanged in hotels or on the street. The exchange rate is around 5%, and the exchange rate is better. It is not difficult to exchange rubles for dollars. You must use rubles when shopping in the store.
However, in flea markets, hawker stalls, etc. Dollar and euro cash are more popular. In addition, credit cards are more common than before, such as Visa, Master Card and AE.
Source: global foreign exchange