Infrastructure Development Finance Company (IDFC) today reported a 15% increase in consolidated net profit at Rs 93.44 crore for the third quarter ended December 31, 2005 when compared with Rs 81.22 crore in Q3FY05.According to a release issued by the company to the BSE today, total income increased to Rs 253.27 crore in Q3FY06 from Rs 180.83 crore in Q3FY05.