How to Correct Form I-9 Errors: Methods, Rules, and Penalties

To correct Form I-9 errors, draw a single line through the incorrect entry, write the correct information next to it, and initial and date the change. The step most employers get wrong is not the mechanics but the authorship: only the employee can fix Section 1, and only the employer can fix Section 2 or Supplement B. Getting that backwards during an audit looks worse than the original mistake.

The Correction Method, Step by Step

On a paper form, the process is short:

Draw a single line through the incorrect information so the original entry stays readable.
Write the correct or missing information next to the crossed-out text.
Initial and date the correction.

Then attach a brief written explanation of why the information was missing or needed correcting. A sentence or two describing what was wrong and why it’s being fixed now is enough.¹

Who Is Allowed to Correct Each Section

ICE auditors pay close attention to this. Only the employee (or the preparer or translator who helped them) can correct errors in Section 1. If you spot a mistake there, you have to ask the employee to fix it. You cannot do it for them.¹

Only the employer (or an authorized representative) can correct errors in Section 2 or Supplement B. If a preparer or translator helped the employee with Section 1 and made the mistake, either the preparer/translator or the employee can make the correction.¹

What Never to Do

Do not use correction fluid, erasure, or any method that hides what was originally written on the form. USCIS warns that concealing changes may lead to increased liability under federal immigration law. If you’ve already used white-out on a form, attach a signed and dated note to the corrected form explaining what happened. That won’t undo the problem, but it’s better than leaving it for an auditor to discover.²

Do not backdate. If you’re completing a new I-9 to replace a missing or badly flawed form for a current employee, enter the actual date you’re completing it. USCIS guidance is explicit: if you failed to enter the date you completed Section 2, do not backdate the form; enter the current date and initial next to the date field.¹

ICE treats backdating as evidence of fraud. An employer who backdates a Form I-9 is disqualified from receiving a Warning Notice during an inspection, which means the violation goes straight to fines.³

When to Start a New Form Instead

Not every I-9 is salvageable with a line-through. When a form has multiple errors in a single section, you can redo that section on a new Form I-9 and attach it to the old one. Start fresh when the errors are substantial, such as an entire section left blank or Section 2 completed based on documents that don’t appear on the Lists of Acceptable Documents.²

Keep the old form. Attach the new form to it with a written explanation of why you needed to start over. Throwing away the original is a separate compliance problem. Auditors want to see the paper trail, even when it’s messy.

Corrections in an Electronic I-9 System

When people search for fixing I-9 mistakes online, they usually mean an electronic I-9 platform. These systems must meet specific federal requirements: reasonable controls to prevent unauthorized changes, an inspection and quality assurance program, an indexing system that allows searching, and the ability to produce legible paper copies.⁴

The feature that matters most for corrections is the audit trail. When anyone creates, modifies, or corrects an electronic I-9, the system must automatically record the date of access, the identity of the person who made the change, and what they did. Employers using electronic systems must also maintain documentation of the business processes that create, modify, and authenticate stored forms.⁵

The exact workflow depends on your platform. Most compliant systems let you reopen a completed form, enter the corrected information, and lock the change with the audit trail recording everything automatically. The legal substance is identical to paper corrections, including the rule about who corrects which section.

Fixing an I-9 After the Employee Has Left

You can’t ask a former employee to come back and fix Section 1. USCIS instructs employers to attach a signed and dated statement to the form identifying the error and explaining that corrections could not be made because the employee no longer works there.¹

For Section 2 or Supplement B errors on a former employee’s form, the employer makes the correction directly using the standard method, then initials, dates, and attaches an explanatory note. The note tells an auditor you found the problem proactively rather than trying to cover it up during an inspection.

Correcting Supplement B (Reverification and Rehires)

Supplement B, which replaced Section 3, handles reverifying an employee whose work authorization is expiring and rehiring a former employee. Common errors include leaving the employee’s name off the top, omitting document information during reverification, missing the rehire date, and not signing or dating the certification.²

If you completed Supplement B on an older version of the form that’s no longer valid, complete Supplement B on the current version and attach it to the previously completed I-9. Corrections use the same method: line through, write in the correct data, initial and date. Only the employer can make corrections in Supplement B.⁶

Why Prompt Correction Matters

ICE draws a sharp line between two categories of I-9 errors. Technical or procedural errors are minor problems like a missing middle initial, a transposed digit in a document number, or a missing date next to a signature. When ICE finds these during an inspection, the employer gets at least 10 business days to fix them. Correct them in that window, and no fine is assessed.³

Substantive errors undermine the purpose of the form: an entirely blank section, verification based on unacceptable documents, or a form that was never completed at all. These cannot be corrected after the fact during an audit and typically result in fines. And here’s the trap: if ICE gives you the 10-day window for technical errors and you miss it, those technical errors get reclassified as substantive violations.³

The financial consequences are per-form. As of the inflation adjustment effective January 2, 2025, civil penalties for substantive or uncorrected technical violations range from $288 to $2,861 for each form with a violation.⁷ Where ICE lands within that range depends on the size of the business, the employer’s good faith, the seriousness of the violation, whether unauthorized workers were involved, and the employer’s history.⁸

Find Errors Before ICE Does

The best time to correct I-9 errors is before an inspection. USCIS and the Immigrant and Employee Rights Section at the Department of Justice have issued joint guidance encouraging employers to perform internal audits to catch and correct mistakes proactively.²

A practical self-audit means pulling every active employee’s I-9 and checking each form against a short list of questions. Is Section 1 fully completed and signed? Was Section 2 completed within three business days of hire? Are the documents from the acceptable lists? Did any expiration date trigger a reverification obligation in Supplement B? Was any section left entirely blank?

When you find errors, correct them using the methods above. Document each fix with a dated note. If a pattern shows up, such as Section 2 consistently completed late, treat it as a training problem at the source. Good faith is one of the five factors that shapes any penalty, and proactive correction is how you demonstrate it.

How Long to Keep Corrected Forms

Keep each employee’s Form I-9 for three years after the date of hire or one year after the date employment ends, whichever is later.⁹

For corrected forms, keep everything: the original form with strike-throughs, any replacement form you attached, and all explanatory notes. For electronic systems, that means preserving the audit trails that document every change. The retention clock doesn’t reset when you make a correction. It still runs from the original hire or termination date, so calculate accordingly before disposing of any records.

1
U.S. Citizenship and Immigration Services. Handbook for Employers M-274 – 9.0 Correcting Errors or Missing Information on Form I-9
2
U.S. Citizenship and Immigration Services. Self-Audits and Correcting Mistakes
3
U.S. Immigration and Customs Enforcement. Form I-9 Inspection Under Immigration and Nationality Act Section 274A
4
eCFR. 8 CFR 274a.2 – Verification of Identity and Employment Authorization
5
U.S. Citizenship and Immigration Services. Handbook for Employers M-274 – 10.1 Form I-9 and Storage Systems
6
U.S. Citizenship and Immigration Services. Completing Supplement B, Reverification and Rehires
7
Federal Register. Civil Monetary Penalty Adjustments for Inflation
8
Office of the Law Revision Counsel. 8 USC 1324a – Unlawful Employment of Aliens
9
U.S. Citizenship and Immigration Services. Handbook for Employers M-274 – Retaining Form I-9