ISLAMABAD-Federal Board of Revenue has extended the date for payment of taxes / duty for the tax period March 2011, and filing of Sales Tax / Federal Excise returns, up to 20th April, 2011, for registered persons claiming benefit under SRO. 283(1)/2011 dated 01.04.2011. The decision has been taken by the FBR in exercise of the powers conferred under section 74 of the Sales Tax Act, 1990 and section 43 of the Federal Excise Act, 2005, says a press release issued Friday.