I live in Casa Grande AZ and am starting up this home base internet business which i sell merchandise from south Carolina . now the company charges me there fee for the product which i mark up and sell it. Now can some one tell me if I have to pay taxes in casa grande and to the state of AZ as well. And do I need a business license In Casa Grande . I have a DBA for the state>Thank you for your help.

You pay sales tax to Arizona for items sold within the state.