Time Period: 1978-1985

Currency: 1st Vietnamese Dong

25.04.1978
Government decrees [No. 87-CP] on the currency unification and [No. 88-CP] on the currency exchange; effective 03.05.1978 by parliamentary resolution [No. 230/NQ-QHK6] of 02.05.1978
03.05.1978
Start of currency exchange:
- 03.05.1978: Start of issuance of the new banknotes and coins
- Between 6am and 12am all cash had to be declared for exchange at a rate of 1 : 1 (North currency) and 1 : 0.8 (South currency), the actual exchange of the declared amount was to be carried out within 3 days (remote areas 7 days)
- Per household, 100-500 Dong (1978), urban areas, or 50-300 Dong (1978), rural areas, was exchanged from old notes (depending on the number of household members)
- Excess amounts had to be deposited in bank accounts and could only be redeemed against proof that is was earned from "genuine work".

13.09.1985
Government decrees [No. 01-HĐBT-TĐ] on the currency redenomination and [No. 02-HĐBT-TĐ] on the currency exchange; effective immediately
14.09.1985
Start of currency exchange:
- 14.09.1985: Start of issuance of the new banknotes and coins
- Between 6am and 12am all cash had to be declared for exchange at a rate of 1 : 10, the actual exchange of the declared amount was to be carried out within 3-5 days.
- Per household, a maximum of 200 Dong (1985) was exchanged from old notes
- Excess amounts had to be deposited in bank accounts (the redemption was not regulated so that the money was lost due to inflation).
- Deposits were exchanged at scaled rates of 1 : 1 (before 01.03.1978) and 1 : 10 (after 01.08.1958) depending on the opening date,
25.05.1990
Government decree [No. 8-LCT/HĐNN8] on banking and credit institutes; effective 01.10.1990
12.12.1997
Law [No. 06/1997/QH10] on the central bank; effective 01.10.1998

1985-1989
Fixed rate against against US Dollar, the official rate became inoperative on 21.04.1987
1989-
Variable rate