Vietcombank sold the dollar at VND24,480, up 0.25% from Monday.
The State Bank of Vietnam (SBV)’s reference rate remained unchanged at VND23,848.
On the black market, the dollar is sold at VND24,700, down 0.28% from the previous day.
Globally the dollar rose on the first trading day of the year as attention turned to economic data this week that may provide clues on the Federal Reserve's next moves, Reuters reported.
The dollar's ascent weighed on the Japanese yen the most, with the Asian currency down 0.54% at 141.63 per dollar, having slid 7% in 2023.
The dollar index fell 2% in 2023, snapping two years of gains. It was last at 101.54, up 0.158%, as investors weighed the prospect of the Fed cutting rates this year.