Legal Question in Business Law in California

Re: selling on the world wide web

Depending on what you're selling, income from Internet sales would, absent an entity, be Schedule C self-employment income, not "1099" income, unless you are working for someone else on an independent contractor basis, in which case the 1099 income is still reported on Schedule C (again, absent a business entity). In general, it would be impossible to even begin to answer your question, given it's apparent scope covering all goods, all services, worldwide. You may want to repost your question adding some more detail as to what you are selling, to whom, and where to/from.