ISLAMABAD - The Federal Board of Revenue (FBR) Tuesday extended the date of filing of returns of income tax for 15 more days, up to November 30. According to a notification of FBR, filing of returns of income and statement of final taxation was earlier due on August, 31 which was first extended up to September 30, 2016, then it was extended to October 31 and for third time the FBR extended the date to November 15.