Total income fell five percent to 497 million rupees in the period.
Interest income fell six percent to 485 million rupees while interest expenses rose 13 percent to 438 million rupees, resulting in net interest income plunging 63 percent to 47 million rupees.
Non-interest income of HDFC Bank more than halved to 59 million rupees while provision for bad loans was also up.
At bank level, the interest margin fell to 0.34 percent as at March 31, 2009 from 3.38 percent a year ago.