Form I-9 retention is one of those rules that sounds simple until you have to apply it to a real employee file. Keep the form too briefly and you have a missing-form problem if an inspection arrives. Keep it too long and you are holding personal information, sometimes with copies of identity documents attached, that you no longer have any reason to store.
This article walks through the retention rule, shows how to calculate the date step by step, and covers the situations that tend to trip employers up.
The rule in one sentence
Employers must keep a completed Form I-9 for each employee for as long as that person works for them. Once employment ends, the form must be kept for three years after the date of hire or one year after the date employment ended, whichever is later.
Two details in that sentence matter:
- The clock only matters after employment ends. For current employees, you keep the form, full stop. There is no retention date to calculate until someone separates.
- "Whichever is later" means you calculate both dates and keep the form until the later one. It is not an either-or choice.
How to calculate the retention date
When an employee separates, work through three steps.
Step 1: Add three years to the date of hire. The date of hire is the first day the employee started work for pay, which is the same "first day of employment" date recorded on the form.
Step 2: Add one year to the date employment ended.
Step 3: Compare the two dates. The later date is the earliest date you may dispose of the form.
Worked examples
A short-tenure employee. Someone starts work on March 2, 2026 and leaves on August 14, 2026.
- Hire date plus three years: March 2, 2029
- Termination date plus one year: August 14, 2027
- Retention date: March 2, 2029, because it is later
For people who stay less than two years, the three-years-after-hire date will almost always control.
A long-tenure employee. Someone starts on June 1, 2019 and leaves on October 30, 2026.
- Hire date plus three years: June 1, 2022
- Termination date plus one year: October 30, 2027
- Retention date: October 30, 2027
For people who stay longer than two years, the one-year-after-termination date will control. The hire-based date has already passed by the time they leave.
The crossover. If someone works for exactly two years, both calculations land on roughly the same day. In practice, the simplest habit is to always run both numbers instead of guessing which one applies.
Situations that complicate the math
Employees who never started
If you completed a Form I-9 for someone who accepted an offer but never actually began work, check current USCIS guidance on how to handle that form. Many employers keep these forms with their other I-9 records so that they can explain the situation if asked, rather than assuming the retention clock never started.
Rehires
When you rehire a former employee within three years of the date their original Form I-9 was completed, you may be able to use Supplement B and the existing form instead of completing a new one. If you do, the original form is now tied to a current employee, so it has to be kept for as long as that person works for you and then through the retention period that applies after the new separation. Treat the earlier separation date as no longer controlling.
If you complete a brand-new Form I-9 for a rehire instead, keep each form according to its own employment period, and make sure your records make clear which form goes with which period.
Reverification and Supplement B pages
When an employee's work authorization is reverified, the Supplement B page becomes part of that employee's Form I-9. It is retained with the form and for the same period. It does not start a separate clock.
Copies of documents
Employers are not generally required to copy the documents an employee presents, though some do, and employers enrolled in E-Verify must keep copies of certain documents when they are used. If you keep copies, store them with the Form I-9 and dispose of them on the same schedule as the form. Whatever your practice is, apply it consistently to every employee. Copying documents for some workers and not others can create discrimination risk.
Corrections and audit notes
If you have corrected a form or attached an explanation after an internal audit, those notes belong with the form and should be kept for the same period. They help show the history of the record if it is ever reviewed.
Why getting this right matters
During an inspection, the government typically asks for Forms I-9 for current employees and for former employees whose forms are still within the retention period. A missing form for someone still inside that window is a problem in its own right. On the other side, holding forms long past their retention date adds no protection and leaves sensitive personal data sitting in your files.
There is also a practical issue: the rule depends on two dates that live in different places. The hire date sits on the I-9 itself, while the termination date usually sits in payroll or your HR system. When those systems do not talk to each other, retention dates get calculated by hand, often months later, by someone who was not involved in the original hire.
Building a retention process that holds up
A few habits make retention manageable:
- Calculate the retention date at separation, not years later during a cleanup project.
- Record both underlying dates, hire and termination, so the calculation can be checked.
- Review on a schedule, such as quarterly, to identify forms that have passed their retention date.
- Dispose of expired forms securely, and do it for every form that qualifies, not only some.
- Pause disposal when needed. If you receive a Notice of Inspection, are involved in an investigation or litigation, or your counsel tells you to hold records, stop routine purging until you are told it is safe to resume.
- Keep electronic and paper records on the same rules. Moving to an electronic system does not change the retention period.
How Clear I-9 helps
Clear I-9 by TRAK keeps every Form I-9, Supplement B page, and supporting image in one secure platform, so the full record for an employee is in one place. Reporting and tracking make it practical to see which former employees' forms are still within their retention window, and notifications and alerts help administrators stay ahead of deadlines and reverification instead of relying on spreadsheets. Configurable permissions and roles control who can view, change, or remove records, and single sign-on and integration with your existing HR system reduce the manual re-entry that causes date errors in the first place.
If your team is still calculating retention dates by hand, it is worth seeing what that process looks like when the dates are already in the system.
Ready to take the guesswork out of I-9 retention? Request a demo of Clear I-9 and see how it fits your workflow.
This article is for general information only and is not legal advice. For guidance on your specific situation, consult qualified employment counsel and the official USCIS resources.