Deductions permissible from insurance commission received

CA Aspirant (Articles) (66 Points)

15 September 2011  

Total commission received during the year is Rs.166780 as per form 16-A Income from Business Profession calculated on presumptive basis Rs.95000 my question is whether we can deduct some expenses from insurance commission received on Ad-Hoc basis say 30% without maintaining any books of accounts?