Some local banks cut exchange rate on April 16. – Photo hanoimoi.com.vn Viet Nam News HÀ NỘI – State Bank of Vietnam set the daily reference exchange rate at VNĐ22,487 per US dollar on the first day of the week on April 16. This was down by five Việt Nam đồng from the last day of the previous week.đồng from both rates, listing the buying rate at VNĐ22,750 per US dollar and the selling rate at VNĐ22,820 per US dollar. đồng. Meanwhile, Vietcombank kept its rates unchanged since April 13, with the buying rate listed at VNĐ22,755 per US dollar and the selling rate at VNĐ22,825 per US dollar.