Section 34(12) in The Gujarat Value Added Tax Act, 2003
(12)Where in the case of a dealer, the amount of tax assessed for any period under this section or reassessed for any period under section 35 exceeds the amount of tax already paid under sub-section (1), (2) or (3) of section 30 by the dealer in respect of such period by more than twenty five per cent of the amount of tax so paid, there shall be levied on such dealer a penalty not exceeding one and one-half times the difference between the tax paid under section 30 and the amount so assessed or reassessed.