As per IRS
Form W-7, Application for IRS Individual Taxpayer Identification Number
Use this form to apply for an IRS individual taxpayer identification number (ITIN).
An ITIN is a nine-digit number issued by the U.S. Internal Revenue Service (IRS) to individuals who are required for U.S. tax purposes to have a U.S. taxpayer identification number but who do not have and are not eligible to get a social security number (SSN).
So If i already have SSN, what then? It seems I have to provide them to all those shadysigning services, who i am hoping are not so shady after all.
I flat out refuse giving out W9 to anyone who has not given me a signing business and when payment is not expected. Some accept that argument, some don't and insist on it. So I yield.
Any thoughts how to safeguard ones SSN.