2. What you need to know about cash and banking services in Vietnam
Although there is a rapid increase in banking services and the use of bank cards or online payments in Vietnam, cash payments are usually commonplace. In addition, some small shops or street vendors, where you can find unique gifts and services, do not offer credit card payments. Therefore, you should always bring some cash. You should learn to differentiate the different notes because the color of some notes (with a large difference in value) is quite similar.
The official currency in Vietnam is the Vietnamese Dong (VND). In rare cases, you can also pay with US dollars, but the usual payment is in the local currency.
The Vietnamese dong currently consists of 9 different notes (1,000, 2,000, 5,000, 10,000, 20,000, 50,000, 100,000, 200,000 and 500,000). Basically, there are even smaller bills with the values 100, 200 and 500, which are as good as not used.
The current exchange rate from Euro to Vietnamese Dong is 1 € = 25.783 VND. - $ 1 = 23.204 VND (as of 09.01.2020)