ONE OF MY CLIENTS BOOKS ARE AUDITED (PROPRIETORY CONCERN) FOR AY 12-13 . NOW FROM 01/04/2013 SERVICE TAX APPLICABLE TO HIM AS ITS BUSINESS IS HOTEL SO THE SERVICE TAX COLLECTED FOR APRIL 2013 HE HAVE TO PAID ON _________???? WHAT IS THE DUE DATE TO PAY??? SHALL HE HAVE TO PAY MONTHLY OR QUARTERLY??