Below are the valid ranges for a Social Security Number (SSN), Individual Taxpayer Identification Number (ITIN), or Adoption Taxpayer Identification Number (ATIN):
Social Security/Taxpayer Identification Numbers are broken down as follows, with the nine-digit SSN composed of three parts:
The first set of three digits is called the Area Number
The second set of two digits is called the Group Number
The final set of four digits is the Serial Number
001-01-0001 through 665-99-9999
667-01-0001 through 899-99-9999
750-01-0001 through 763-99-9999
764-01-0001 through 899-99-9999
When the SSN "Group" contains zeros, the SSN is a test number and the return will be rejected. When the SSN "Serial" contains all zeros, the return will be rejected.
900-70-0000 through 999-88-9999
900-90-0000 through 999-92-9999
900-94-0000 through 999-99-9999
An ITIN is a nine-digit number assigned by the IRS to taxpayers who are not eligible to obtain an SSN. It is used for tax purposes only. See the IRS Individual Taxpayer Identification Number webpage for additional details.
Note. ITINs that have not been used on a tax return for Tax Year 2017, Tax Year 2018, or Tax Year 2019 will expire December 31, 2020. All ITINs issued before 2013 with middle digits of 83, 84, 85, 86, or 87 (such as "9XX-83-XXXX") will also expire on December 31, 2020.
900-93-0000 through 999-93-9999
An ATIN is issued by the Internal Revenue Service as a temporary taxpayer identification number for the child in a domestic adoption where the adopting taxpayers do not have and/or are unable to obtain the child's Social Security Number (SSN). It is to be used by the adopting taxpayers on their Federal Income Tax return to identify the child while final domestic adoption is pending.