What kind of permit do I need to sell goods online?

I already got an FEIN, and a fictitious name paperwork done. What other permit do I need to have? Do I need a seller permit? or do I need a reseller Certificate? or both. Any information will help. Thanks in advance.

Its based on what state you live in. There are a couple of states that require a resellers certificate but most just require a tax id.

There is nopermit required to sell online but if your doing a business you would need a dba and tax id number to open your business accounts at the bank and to report earnings to the IRS