Understanding Your Letter 5071C or 6331C | Internal Revenue Service
Letter 5071C or 6331C tells you that we need to verify your identity to process a federal income tax return filed with your name and taxpayer identification number.
The CP5071 series notices include: CP5071 5071C CP5071F Why you received this notice A federal income tax return, Form 1040 series, was filed under your Social Security number (SSN) or individual taxpayer identification number (ITIN). We sent you a CP5071 series notice because we need you to verify your identity and the return: If you didn’t file a return : Verify with us. You may be the victim of identity theft. If you did file a return : Verify so we can continue processing your return. What you need to do next Follow the instructions on your notice to verify your identity and the tax return
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