The Japanese currency is ‘Yen’. It is necessary to carry some money with you, because Japan is known to be a cash-based society. It is less common to accept other payment methods unless you are in major tourist spots. You might find it difficult even to use a credit card at some shops/tourist spots. In addition, it is advisable to find the right timing to exchange your money by frequently checking the exchange rate and converter, due to Japan’s bold monetary policy and the unstable movement of Chinese stocks.