Quick answer: If an IP PIN is required, you generally cannot successfully e-file without the correct current IP PIN. If you cannot retrieve or have the PIN reissued, the IRS says you may mail a paper return without it, but the return will be reviewed to verify your identity and processing may be delayed.
What happens if I e-file without my IP PIN?
The IRS says an electronic return will be rejected if a required IP PIN is missing or entered incorrectly.
Before retransmitting, retrieve the correct IP PIN and confirm whether the requirement belongs to the primary taxpayer, spouse or dependent.
Can I mail a paper return without my IP PIN?
Yes, in some circumstances. The IRS says that if you cannot retrieve your IP PIN online and cannot have it reissued, you can mail a paper tax return without the IP PIN.
The IRS will review the paper return to confirm that you filed it, and that identity verification can delay processing and your refund.
Should I put the IP PIN on a paper return if I know it?
Yes. If you have an IP PIN and you are the primary or secondary taxpayer, the IRS instructs you to enter it in the Identity Protection PIN area of the Form 1040 series return.
For paper returns, the IRS says a dependent's IP PIN does not need to be entered.
Can I just use last year's IP PIN?
No. The IRS generates a new IP PIN each year. If you are filing during 2026, use the 2026 IP PIN—even for an older tax-year return.
What if I lost the current IP PIN?
Retrieve it through your IRS Individual Online Account. If you cannot retrieve it online, the IRS provides specialized assistance at 800-908-4490 for reissuance when eligible.
Read: I Lost My IP PIN — How Do I Retrieve It? →
What if the IRS cannot reissue my IP PIN?
The IRS says there are situations when an IP PIN cannot be reissued by mail. If you cannot access the online account and the IRS cannot reissue the PIN, mailing a paper return without it may be the available filing path.
Can I use Form 15227 to replace a lost IP PIN?
No. The IRS specifically says Form 15227 is for people making a new request to opt into the IP PIN program. It is not the form to use when you have already been assigned an IP PIN and simply lost it.
What if my spouse's IP PIN is missing?
If your spouse has an IP PIN requirement and you are filing electronically, the spouse's valid current IP PIN must be included. A primary taxpayer's IP PIN does not substitute for the spouse's PIN.
Read the IND-183-01 spouse IP PIN guide →
What if my dependent has an IP PIN?
For e-filed returns, the IRS requires the dependent's IP PIN in the applicable return fields if one was assigned. If it is omitted, the e-filed return can reject.
For a paper return, the IRS says you do not need to enter the dependent's IP PIN.
Can I opt out of the IP PIN program?
Some taxpayers who voluntarily enrolled and were not victims of tax-related identity theft may be eligible to opt out through their IRS Online Account. The IRS says that after an opt-out selection, you may need to allow up to 72 hours before you can e-file without an IP PIN.
Need to file but your IP PIN is holding up the return?
RefundIQ can review the exact rejection, identify whose PIN is required, prepare or correct the return, and help you determine whether to retrieve the PIN, wait for reissuance, or use the appropriate paper-filing path.
Have RefundIQ Handle It — Call 844-754-1040Before you decide how to file
- Save the exact rejection message.
- Identify whose IP PIN is required.
- Try to retrieve the current IP PIN online.
- If necessary, ask the IRS whether reissuance is available.
- Do not use an old IP PIN or guess.
- If the PIN cannot be retrieved or reissued, review the paper-return option.
- Keep proof of timely filing if a deadline is close.
Related IP PIN help
Why is my IP PIN not working? →
IP PIN Rejection Help Center →
Official IRS sources
Sources reviewed October 7, 2026. IP PIN procedures can change; use the current IRS instructions for the calendar year in which you file.