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Range of valid SSN, ITIN, or ATIN

SOLVEDby IntuitProConnect Tax9Updated October 13, 2021

This article explains the valid range for Social Security Numbers (SSN), Individual Taxpayer Identification Numbers (ITIN), or Adoption Taxpayer Identification Numbers (ATIN).

  • For more information, see IRS Publication 1346 (Electronic Return File Specifications and Record Layouts for Individual Income Tax Returns).

Identification Numbers are broken down as follows:

1 2 3 - 4 5 - 6 7 8 9
Area - Group - Serial

Social Security Number (SSN) Ranges

  • 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 SSN and the return will be rejected. When the SSN "Serial" contains all zeros, the return will be rejected.

Individual Taxpayer Identification Numbers (ITIN) Ranges

  • 900-70-0000 through 999-88-9999
  • 999-90-9999 through 999-92-9999
  • 999-94-0000 through 999-99-9999
  • The valid range for the ITIN "Area" is 900 through 999.
  • The valid range for the ITIN "Group" is
    • 70 through 88
    • 90 through 92
    • 94 through 99
  • The valid range for the ITIN "Serial" is 0000 through 9999.

An ITIN is a nine-digit number assigned by the Internal Revenue Service to taxpayers who aren't eligible to obtain an SSN. It's used for tax purposes only.

Adoption Taxpayer Identification Numbers (ATIN) Ranges

  • 900-93-0000 through 999-93-9999
  • The valid range for the ATIN "Area" is 900 through 999.
  • The valid ATIN "Group" is 93.
  • The valid range for the ATIN "Serial" is 0000 through 9999

An ATIN is a temporary nine-digit number issued by the Internal Revenue Service for an adoptive child. It is provided to individuals who are in the process of legally adopting a US citizen or resident child and who aren't eligible to obtain an SSN for that child in time to file their tax return.

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