Gap widens in deposit interest ratesA gap has opened up between deposit interest rates offered by different categories of banks due to differences in their liquidity, cash demand and status. There is a growing gap between deposit interest rates offered by small and large banks. Photo HD BankSmall- and medium-sized banks have hiked their interest rates. Viet Capital Bank, GPBank, Bac A Bank, NCB, and DongA Bank have raised their six- month rate to 7 per cent or above. The difference in rates between small and large lenders is 2-2.6 points for six-month deposits.