There are 4 Business Tax ID Numbers. A federal tax ID number (Federal EIN), a State Employer (State EIN) Tax ID Number, a State Sales Tax ID Number ( seller's permit / wholesale license), and a Business Tax Registration ID (Business License).

Sellers may take 1- 5 but may take as long as 3-10 business days

Buyers or Seller's of wholesale. Buyesr of tax free and sellers of  retail tangible itmes. Those that lease taxable items. Those that sell taxable iterms.