Different purposes
An EIN identifies a business. An ITIN serves certain individuals for federal tax purposes; it is not work authorization. Eligibility depends on your circumstances.
Prepare the relevant information
For an EIN enquiry, prepare the company’s formation details and responsible-person information requested by the team. For an ITIN enquiry, explain the tax purpose and follow the specific identity-document checklist. Share sensitive records through the portal.
Review the scope
Tell the team about existing numbers or earlier applications so the request can be reviewed. Confirm whether the service covers the number application, a tax return or both. Use the IRS sources below for current official guidance.