Reasonable Cause Affidavit by Payor–Form P-1, or Reasonable Cause Affidavit by Payor, is a document used by payors to request a waiver of penalties for not providing a payee’s Social Security Number (SSN) or Taxpayer Identification Number (TIN) on tax-related documents. ...
early; when you file after the IRS gets a return that carries your SSN, the IRS alerts you in writing. The agency also contacts suspected identity theft victims when their SSN matches that of a "taxpayer" who owes money or gets a refund that covers taxes due when it has no return ...