A questions that keeps coming up about Tax Identifications Numbers (TIN’s) is what are to possible types of numbers that a company couls use for their official TIN? The following answer and many others about TIN issues can be found at: http://www.irs.gov/efile/article/0,,id=98145,00.html
A TIN is one of the following four numbers.
- A Social Security Number (SSN)
- An Employer Identification Number (EIN)
- An IRS individual taxpayer identification number (ITIN). Aliens who do not have an SSN, and are not eligible to get one should get an ITIN. Form W-7, Application for IRS Individual Taxpayer Identification Number, is used to apply for an ITIN.
- An Adoption Taxpayer Identification Number (ATIN). An ATIN is a temporary tax identification number issued for a child born in the U.S. An ATIN is used as an identifying number is the child is not eligible for an SSN.