The IRS rejects e-filed returns that contain incorrect, mismatched, or already-filed Social Security numbers, birthdates, or names. Here are a few ways this can happen:

  • You accidentally entered a Social Security number that doesn't exist;
  • The name or date of birth you entered doesn't match IRS records for that Social Security number;
  • A former spouse claimed your dependent on their return, and filed before you did;
  • Your dependent already claimed himself/herself on their own return (or your parent already claimed you) and filed before you did;
  • Someone else filed their return using your, your spouse's, or your dependent's Social Security number.

Important: If you believe someone filed a fraudulent return using your Social Security number, follow these instructions.