Tax exemption limit

Abdullah (Student & Enterpreneur) (34 Points)

01 December 2014  
Sir,

I'm a businessman registered my firm as a Partnership firm and I'm selling my products online at e-commerce  sites. Please tell me till how much Sales I'm exempted from Tax ? And after that limit, at what Rate, do I have to pay tax ? (My products are Textile Products like Bedsheets and all).
One more query that I'm from U.P. and selling most of goods to Delhi so is there any specific limit of sales exempted from Tax under same state or inter state transactions ?