A tax identification number is a unique nine-digit number issued by the Social Security Administration or the IRS to anyone who pays taxes.

An EIN is a tax ID number for businesses, churches, and some other organizations. An EIN is a form of tax ID number, but not all tax ID numbers are EINs.

Note that the adoptive tax ID number is used to claim the child tax credit, a common tax write-off for parents, but cannot be used to claim the EITC. 5. Preparer Tax ID Number.

Curious about EIN vs. TIN? An EIN is a type of tax number used by businesses and organizations, but not all tax ID numbers are EINs. Learn more with this guide.

A tax identification number (TIN) is a nine-digit number that's needed to file federal tax returns. For most individuals, it's their Social Security number.

A Taxpayer Identification Number (TIN) is a unique nine-digit number the Internal Revenue Service uses to identify individual taxpayers. A TIN can come in different varieties, including Social ...