SSN Validation

The SSN Field

An SSN field exists on the employee and contractor objects. It can accept a nine-digit number. Employee and contractor SSNs are critical to ensuring successful tax payments and filings.

Note: business contractors do not need SSNs; instead, they need an EIN for their tax filings.

SSN Validation & Onboard Status

Employee and contractor onboard status considers SSN validation status. If an employee or individual contractor has a null or invalid SSN (as indicated by the SSN validation status), their onboard status will be in needs_attention.

Business contractors' onboard status does not consider SSN validation status. However, business contractors' onboard status will be in blocking if the contractor does not have a valid EIN.

SSN Validation Status

• An employee's SSN validation status must satisfy the SSN criteria.
• A contractor's SSN validation status can meet either the SSN or ITIN criteria.

SSN validation status is calculated asynchronously when the SSN value is updated.

The SSN validation status is surfaced on the employee and contractor objects on the ssn_validation_status field, which can be one of either: Either pending indicating validation in progress, validated indicating passing our validation criteria, or invalid indicating the ssn is not valid.

• pending: Validation is in progress.
• validated: SSN passes validation criteria.
• invalid: SSN does not pass Check's validation criteria.

SSN Criteria

A nine digit SSN value will be considered valid unless one of the following applies:

• Cannot start with 9, 666, or 000
• Middle two digits cannot be 00
• Last four digits cannot be 0000
• Cannot be any of the following:
  • 123456789
  • 987654321
  • 111111111
  • 222222222
  • 333333333
  • 444444444
  • 555555555
  • 666666666
  • 777777777
  • 888888888
  • 999999999

ITIN Criteria

A nine digit SSN value for contractors will be allowed if it meets the following criteria, indicating it is an ITIN:

• Must start with 9
• Middle two digits must be in one of the following ranges:
  • 50-65
  • 70-88
  • 90-92
  • 94-99