law: 25. Power to exempt stamp duty, registration fee and court fees and power to refund.-
  (1) The Central Government may, by notification in the Official Gazette, reduce or remit, whether prospectively or retrospectively from a date not earlier than the date of commencement of this Act,-
  (a) the stamp duty with which, under any law relating to stamp duty for the time being in force, instruments or documents executed by or on behalf of a promoter, apartment owner or Association of Apartment Owners relating to any of the purposes of this Act are respectively chargeable;
  (b) any fee payable by or on behalf of any promoter, apartment owner or Association of Apartment Owners in relation to instruments or documents referred to in clause (a) under any law relating to registration of documents or to court fees, for the time being in force, and which the Central Government is competent to levy.
  (2) The Central Government may refund the amount of any duty or fee paid in pursuance of any law referred to in sub-section (1) in such circumstances, to such extent and subject to such terms and conditions, if any, as that Government may, by order, determine.