Where Do You Put the IP PIN on a Tax Return?

Identity Protection PINs (IP PINs) are six-digit numbers issued by the IRS to prevent fraudulent tax filings. If assigned one, entering it correctly is essential to avoid processing delays or rejections.

IP PIN Field on Form 1040

The IRS designates a specific location on Form 1040 for the IP PIN to authenticate the return.

On the 2024 Form 1040, the IP PIN is entered in the signature section, in the space labeled “Identity Protection PIN” near the bottom of the second page. The six-digit number must be entered exactly as issued by the IRS, as errors can lead to rejection. Unlike Social Security or Employer Identification Numbers, the IP PIN changes annually, so taxpayers must use the most recent one.

Placement on Paper Returns

Filing a paper return with an IP PIN requires accuracy to ensure the IRS verifies the submission without issues. Errors or omissions can cause delays. The number must be written exactly as provided in the designated field.

Handwritten entries pose additional risks. Legibility is crucial—unclear or incorrect digits can lead to processing errors. Using black ink and writing neatly reduces misinterpretation. Taxpayers should avoid extra markings or notes in this section, as IRS scanning systems read standardized forms without additional annotations.

For joint filers, only the individual who received an IP PIN needs to enter it. If both spouses were issued separate IP PINs, each must enter their respective number in the correct location. Failing to provide an IP PIN when required can result in rejection, requiring resubmission and delaying any refund.

Placement in Electronic Returns

When filing electronically, the IP PIN must be entered in the correct field to ensure acceptance. Most tax preparation software includes a dedicated section for this number, typically appearing during identity verification after entering Social Security numbers and other personal details.

E-filing systems validate the IP PIN against IRS records before submission. If incorrect or missing, the return is rejected immediately, preventing further processing until corrected. Unlike paper filings, where errors may take weeks to surface, electronic submissions provide instant feedback, allowing quick resolution.

For taxpayers using IRS Free File or direct filing options, the IP PIN field is part of the authentication process. The IRS system cross-references the entered number with its database before accepting the return. If multiple individuals on a return have separate IP PINs, the software ensures each is entered correctly to prevent errors that could trigger rejection.