Unofficial exchange points sold the greenback at VND25,690, down 0.35% from Wednesday.
Vietcombank kept its rate unchanged at VND25,457.
The State Bank of Vietnam’s reference rate was stable at VND24,245.
The dollar has risen over the dong by 4.16% since the beginning of the year.
Globally the dollar hung around five-week lows on Tuesday as comments from Federal Reserve Chair Jerome Powell bolstered the case for a rate cut in September, while cryptocurrenices gained on rising odds of former President Donald Trump getting reelected, Reuters reported.
Powell said on Monday the three U.S. inflation readings over the second quarter of this year "add somewhat to confidence" that the pace of price increases is returning to the Fed's target in a sustainable fashion.
The euro was a shade lower at $1.0893, while sterling last fetched $1.2967. The dollar index, which measures the U.S. unit versus six peers, was at 104.3, not far from the one month low of 104 it touched on Monday.