ISLAMABAD - The Federal Board of Revenue has extended the dates for payment of taxes and Duty and for filing of Sales Tax and Federal Excise duty returns. In a notification issued here, the Inland Revenue Wing of the FBR has informed all Chief Commissioners of LTUs and RTOs that the date for payment of taxes / duty has been extended upto 20th August, 2011 while the date for filing of Sales Tax / Federal Excise Duty returns has been extended up to 30th August 2011. This extension of date is for the Tax period July 2011, and is applicable to all registered persons.