Hi Dilip,
The Professional Tax is a source of revenue for the state governments which helps in implementing schemes for the welfare and development of the region. Professional Tax is deducted by the employers from the salary of the salaried employees and is deposited with the state government. Other individuals, pay it directly to the government or through the local bodies appointed to do so.
The respective state governments in India levy the professional tax on income from profession or employment. The professionals earning an income from salary or other practices such as a lawyer, teacher, doctor, chartered accountant, etc. are required to pay professional tax. In case of salaried and wage earners, the professional tax is liable to be deducted by the employer from the salary/wages and the same is to be deposited to the state government. In case of other class of individuals, this tax is liable to be paid by the employee himself. The tax calculation and amount collected may vary from one state to another, but it has a maximum limit of INR 2500/- per year.
You can refer the following link for more information on Professional Tax applicable states, not applicable states, exemption.
Profession Tax Slabs India - greytHR Admin Guide - Greytip Documentation