Reject Code IND-181-01: The IP PIN on Your Return Is Not Valid
By Forrest Baumhover, CFP®, EA · Last verified November 12, 2026
IND-181-01 means the Identity Protection PIN (IP PIN) entered for the primary taxpayer is not valid. IND-180-01 means the IP PIN was wrong; IND-182-01 and IND-183-01 cover the spouse, and IND-996 a dependent.
What the IRS says
The IRS page for IND-181-01 says: "The Identity Protection PIN (IP PIN) entered for the primary taxpayer is not valid." The IRS IP PIN questions page adds: "If an IP PIN isn't entered correctly, we'll reject the return."
How to fix it
Enter the IP PIN and resubmit. The IRS page says it "must be the six-digit number issued by the IRS for the current tax year."
If you do not have it, the IRS says: "You may use the IRS app or your online account to retrieve your current IP PIN." Without the app or an account, you can call the IRS at 800-908-4490; the IRS mails the IP PIN "within 21 days." Each person who has an IP PIN needs it on the return; the IRS warns, "Your e-file return will be rejected if you fail to enter a dependent's IP PIN."
If you cannot get the IP PIN in time
The reject code index explains the grace period for resubmitting or filing on paper.
What people mistake IND-181-01 for
Some people read IND-181-01 as proof that someone stole their identity. The code means only that the IP PIN entered on the return was not valid.
Others put one person's IP PIN in another person's field. Each code names whose IP PIN failed: the primary taxpayer (IND-180-01, IND-181-01), the spouse (IND-182-01, IND-183-01) or a dependent (IND-996).