The local currency is the dong (abbreviated "d" or VND). Bank notes are 500 / 1,000 / 2,000 / 5,000 / 10,000 / 20,000 / 50,000 / 100,000 / and 500,000 VND.
The exchange rate (Aug 2018) is approximately 23,000 VND to 1 USD.
Money Exchange: Money and travellers’ cheques, particularly USD, can be exchanged at banks, hotels and authorised money-exchangers. It is advisable to carry USD bills in small denominations.
Credit Cards & ATMs: Credit cards are generally accepted at most of hotels, in some up-market shops and restaurants in major cities. ATM facilities are available in all major cities. For travelling to urban areas, cash would be the best choice for you.