The income tax department has garnered about Rs 4,600 crore in taxes from 56 lakh updated I-T returns filed by taxpayers in the past two years, Central Board of Direct Taxes (CBDT) chief Nitin Gupta said. In a post budget interview to PTI TV, Gupta also said the I-T department has set up a demand management centre at Mysuru, Karnataka, which is focusing on disputed pending large tax demands of above Rs 1 crore. "We are continuously improving the services and creating litigation free environment. We have come out with a facility for updation of return.