Vietcombank sold the dollar at VND24,550, up 0.08% from Monday. This is the highest rate the bank has offered this year.
The State Bank of Vietnam raised its reference rate by 0.06% to VND24,060.
The dollar was sold at VND24,350 on the black market, up 0.29%.
It has increased by 3.46% since the beginning of the year.
Globally the euro clung to gains on Tuesday following hawkish comments from European Central Bank (ECB) policymakers, while the yen languished near a 10-month low ahead of a key rate decision from the Bank of Japan (BOJ) later in the week, Reuters reported.
The euro eked out a slight gain to trade at $1.0695, having risen 0.3% in the previous session as ECB officials suggested further rate increases were on the cards - comments which boosted euro zone government bond yields.
The dollar index slipped 0.04% to 105.04.
Source: e.vnexpress.net
