The State Bank of Vietnam’s central exchange rate slightly decreased to VND 25,095 per US dollar, down 0.01 percent from the previous day.
Google Finance’s mid-market rate rose to VND 26,328 per US dollar, an increase of 0.09 percent.
Black market rates were unchanged, with buying at VND 27,720 and selling at VND 27,770, keeping the mid-market rate stable at VND 27,745 per US$.
The spread between the SBV rate and the black-market mid-point remained wide at about VND 2,650, equivalent to 10.56 percent.
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Vietnam exchange rates, 28 October 2025
| 28 Oct | 27 Oct | Change | % | |
| SBV: Central Exchange Rate | 25,095 | 25,097 | -2 | -0.01% |
| Google Finance: Mid Market Rate | 26,328 | 26,305 | 23 | 0.09% |
| Black Market: Buy | 27,720 | 27,720 | 0 | 0.00% |
| Black Market: Sell | 27,770 | 27,770 | 0 | 0.00% |
| Black Market: Mid-market | 27,745 | 27,745 | 0 | 0.00% |
| Spread: SBV / Black Market MM | 2,650 | 2,648 | 2 | -% |
| Spread: SBV / Black Market MM | 10.56% | 10.55% | – | – |
Open market operations
State Bank of Vietnam injected liquidity through repos totalling roughly US$835.6 million on 28 October 2025.
Seven-day repos reached US$151.93 million, 14-day US$341.84 million, 28-day US$189.91 million, and 91-day US$151.93 million.
No short-term T-bills were issued.
Vietnam open market operations, 28 October 2025
| 28 Oct | 27 Oct | |
| Repos – 7 Days US$ | $151,929,600 | $37,982,400 |
| Repos – 14 Days US$ | $341,841,600 | $113,947,200 |
| Repos – 28 Days US$ | $189,912,000 | $303,859,200 |
| Repos – 91 Days US$ | $151,929,600 | $210,020,262 |
| T-Bills – 7 Days US$ | 0 | 0 |
Interbank interest rates
Interbank interest rates rose across most tenors on 28 October 2025.
The overnight rate increased slightly to 5.87 percent, while the one-week rate climbed to 5.99 percent.
The two-week tenor edged up to 6.04 percent, and the one-month rate saw the largest jump, rising 47 basis points to 5.84 percent.
Three- and six-month rates reached 5.95 and 6.46 percent respectively, both higher than the previous day.
The nine-month rate remained unchanged at 5.10 percent, indicating selective tightening focused on short to mid-term liquidity.
Vietnam interbank interest rates, 28 October 2025
| 28 Oct | 27 Oct | Change | |
| Overnight | 5.87 | 5.81 | 0.06 |
| 1 Week | 5.99 | 5.86 | 0.13 |
| 2 Weeks | 6.04 | 5.95 | 0.09 |
| 1 Month | 5.84 | 5.37 | 0.47 |
| 3 Months | 5.95 | 5.80 | 0.15 |
| 6 Months | 6.46 | 6.18 | 0.28 |
| 9 Months | 5.10 | 5.10 | 0.00 |
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