" Taxpayer Identification Numbers (TIN) 에는 여러 유형들이 있는데 . . .
-Social Security Number "SSN"
-Employer Identification Number "EIN"
-Individual Taxpayer Identification Number "ITIN"
-Taxpayer Identification Number for Pending U.S. Adoptions "ATIN"
-Preparer Taxpayer Identification Number "PTIN"
EIN: tax ID for businesses, Employer Identification Number (EIN) is also known as a federal tax identification number, and is used to identify a business entity (like a corporation or an LLC) for tax purposes.
ITIN, or Individual Taxpayer Identification Number, is a tax processing number
only available for certain nonresident and resident aliens, their spouses, and dependents who cannot get a Social Security Number (SSN)."
'소셜넘버가 TIN과 동일한 것인지 . . .' 소셜넘버가 TIN의 한 유형이므로 TIN 으로 사용할 수 있으며 . . . 아래 IRS 웹사이트 참조하세요.
https://www.irs.gov/individuals/international-taxpayers/taxpayer-identification-numbers-tin