Unofficial exchange points sold the greenback at VND25,420, down 0.39%, from Monday.
Vietcombank kept its rate unchanged at VND25,130.
The State Bank of Vietnam’s reference rate was stable at VND24,037.
The dollar has increased against the dong by 2.91% since the beginning of the year.
Globally the dollar was tentative on Tuesday as it failed to get a meaningful boost from a rise in U.S. Treasury yields, though that kept pressure on the yen which languished near multi-decade lows and left traders on alert for any signs of intervention, Reuters reported.
The greenback added 0.03% to 151.87 yen , holding near a 34-year high of 151.975 yen hit last month as Japanese officials continued to ramp up their jawboning efforts in a bid to defend the currency.
The Aussie fell 0.01% to $0.6604, while the Chinese yuan stood at 7.2437 per dollar in the offshore market.