The interest rates are revised periodically, with a Post Office RD currently earning an interest of 7.2% per annum. The interest is compounded every quarter, which ensures that a sum of money multiplies by the time it matures. Note: The interest rate mentioned above is valid as of 01 July 2019. Higher rate of interest – As you all know post office fixed deposit proffer substantial higher rate of interest comparatively. Currently, the rate varies from 6.99% to 7.33%. Currently, the rate varies from 6.99% to 7.33%. Post Offices like banks offer FD (Fixed Deposits) and offer very competitive interest rates. The latest Post Office FD interest rates vary from 6.9% for 1-year deposit to 7.7% for 5-year deposit. The post gives the details about the same.