Proffessional tax by employer

Hello All,

I have started a business for sales and service of mechanical machin.

I am going to apply for VAT & CST No in MUMBAI. but i dont have any idea for the Proffessional Tax Registration.

we have 3 Partner and 1 Employee. so should i register for PT and how much i have paid to Govt. for all the person.

please inform me is it related to vat or i can register for PT after Vat Registration.

your responses are highly appriciated.

Thanks