Enter your TIN in the appropriate box. The TIN provided must match the name given on line 1 to avoid  backup withholding. For individuals, this is generally your social security number (SSN However, for a  resident alien, sole proprietor, or disregarded entity, see the instructions for Part I, later. For other  entities, it is your employer identification number (EIN If you do not have a number, see How to get a  TIN, later.