hey guys.. I do not know how you people are answering a topic without knowing the meaning of the subjected word?
please check it in Wikipedia on professional tax.
https://en.m.wikipedia.org/wiki/Professional_Tax
commercial tax departments will look after taxes levied on sale of goods.. whereas income tax officials on income earned by individual and corporates or any businesses through different sources, excise dept will be on service tax, excise duty on manufacturing goods etc, customs..
but professional tax is being levied by corporations or town panchayats.