Corporation Bank has reported a bottom line of Rs312 crore in Q4FY2010 up 20% yoy on the back of strong NII growth (up 494% yoy) and improvement in asset quality on the back of write backs of agri NPAs due to extension of the debt waiver scheme deadline by the government. Advance grew by a healthy 30% yoy and NIMs improved by 30 bps on sequential basis adding to the strong performance. However opex was up 26% on the back of a 36% jump in staff cost leading to the cost to income ratio rising by 500 bps qoq to 40.3%.