On September 15, 2026, the USD exchange rate in Vietnam experienced a slight uptick, in line with global trends, although it remains relatively low. The State Bank of Vietnam announced an official exchange rate of 25,617 VND per USD, which is an increase of 10 VND compared to the previous day.

Following this announcement, commercial banks also adjusted their rates. For instance, Vietcombank's buying rate for USD rose to 25,800 VND, while the selling rate reached 26,180 VND, marking a 70 VND increase from the previous day. Similarly, ACB reported a buying rate of 25,800 VND and a selling rate of 26,160 VND, also up by 70 VND.

The free dollar market saw a slight increase as well, with the buying price at 25,890 VND and the selling price at 25,990 VND, although it remains lower than the bank rates.

In the global market, the USD has risen to its highest level in two weeks, with the USD Index hovering around 99.55 points, up by 0.33 points from the previous day. This increase coincides with a surge in U.S. Treasury yields, particularly the 10-year yield, which reached its highest point since October 2023. However, the yield did see a slight decrease at the close of trading, finishing at 4.987%.

Additionally, oil prices have risen following Saudi Arabia's closure of a crucial oil pipeline to avoid transit through the Strait of Hormuz. Oil prices briefly spiked by about 4% but later cooled off, with WTI crude closing up 1.34% at $101.39 per barrel, while Brent crude increased by 1.02% to $105.68 per barrel.

Diplomatic efforts in the Middle East appear to be facing challenges after a meeting between Iran and other Gulf nations was postponed. This week, the U.S. Federal Reserve will convene to discuss monetary policy for September, with rising inflation reports leading investors to anticipate a tighter monetary policy. According to CME's FedWatch tool, there is a 92% probability of an interest rate hike this week, up from 89% over the weekend, which is driving demand for USD and helping the currency regain strength.

Furthermore, the Bank of Japan is also expected to raise interest rates this weekend amidst rising energy prices and ongoing tensions in the Middle East.