what do you mean by professional tax?In which states is professional tax applicable? How to register for professional tax?
pt is deduction after gross total income or before u/s16(ii), and whether it is same fr salaried and other assessee's.
There are different rules in different states. For salaried person deduction of PT is allowed under section 16(iii) after Gross salary means we found income from salary after deduction of PT. so we can say PT is allowed for deduction after gross salary but before gross total income for salaried. There are different rules for other person in some states they are liable to pay PT on the basis of number of years of there business/profession and in some state on the basis of GTI