You can choose to be a(n) Plumbing :
Ravenel Business Tax Registration ( PlumbingBusiness License) All businesses including home, online or mobile BUSINESS need a BUSINESS license because they are BUSINESSES.
Example:
Christian starts a plumbing business from home selling stuff on the internet.
He wants to buy plumbing stuff wholesale and then post them online and sell them in retail.
To buy wholesale, Christian will need to obtain a seller's permit.
The seller's permit includes a resale certificate that will sign and fax to the Plumbing wholesaler, so Christian can prove to the wholesaler that he has a seller's permit ID number that enables him to buy wholesale.
When Christian sells the faucets online, he will have to charge about 7% tax in most states and collect it to pay the government.