40.        Adjustment of any payment –
Any   payment made by a dealer or person in respect of any period towards any amount   due as per the order  passed under this Act shall first be   adjusted except in so far as the recovery of the said amount or part thereof   is stayed under or, as the case may be, sub-section (6C) of section 26, against the   interest payableby him on the date of payment in respect of   the said period and thereafter towards the amounts due as a penalty, sum   forfeited and fine. Any amount remaining unadjusted shall then be adjusted   towards the tax payable in respect of that period.