If a dependent or qualifying person listed on your return has ever received an IP PIN, a CP01A notice, or opted into the IRS's IP PIN pilot program, that person's special 6-digit IP PIN needs to be on the return to validate their identity for e-filing.
Find your dependent or qualifying person's 6-digit IP PIN
Look at the CP01A letter they received in December or January for their 2024 taxes. IP PINs from prior tax years won't work.
Follow these instructions to enter your Identity Protection Personal Identification Number (IP PIN) or to remove an IP PIN that you accidentally entered.