The daily reference exchange rate is set at 23,656 VND/USD on May 17. (Photo: Capital)

With the current trading band of +/- 5%, the ceiling rate applicable for commercial bank during the day is 24,838 VND/USD and the floor rate 22,473 VND/USD.

The opening hour rates at commercial banks increased.

At 8:15 am, Vietcombank listed the buying rate at 23,255 VND/USD and the selling rate at 23,625 VND/USD, both up 5 VND from the end of May 16.

Meanwhile, BIDV kept both rates unchanged at 23,300 VND/USD (buying) and 23,600 VND/USD (selling).