28 Correction of deficiencies

If a person discover a discrepancy in a return furnished by him for a tax period under this act, he shall remove such discrepancy and furnish a revised return within the year following the year of such tax period:

Provided that if, as a result of the discrepancy, the person has paid less tax than was due under this act, he shall, pay the tax owed and interest thereon :

Provided further that for the years 2008-09, 2009-10,and 2010-11except for those returns pertaining to any tax period of 2010-11 which were scheduled to be furnished in the year 2011-12 the revise return shall be required to be furnish by 31st December, 2012.