I-9 retention rules: how long to keep the form, and how
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Federal regulation sets one formula for how long to keep a completed Form I-9: three years after the date of hire, or one year after the date employment ends, whichever is later. That single sentence hides two practical questions employers get wrong often enough to matter: how to calculate "whichever is later" for a specific employee, and how paper versus electronic storage rules differ once you actually have to produce the form.
This is not legal advice. It summarizes USCIS's Handbook for Employers (M-274) retention guidance and 8 CFR 274a.2, as published on uscis.gov, as of September 2026. Confirm current requirements on uscis.gov/i-9-central before relying on this for your own retention schedule.
The formula, worked through
| Tenure | Which date controls | Why |
|---|---|---|
| Worked less than 2 years | 3 years from the date of hire | The hire-plus-three date always falls later than one year after a termination that happened within two years of hire. |
| Worked exactly 2 years | Either date, they coincide | Three years from hire equals one year from a termination exactly two years after hire. |
| Worked more than 2 years | 1 year from the date employment ends | The termination-plus-one date always falls later once tenure passes the two-year mark. |
| Still currently employed | No end date yet; the clock has not started on the "1 year after termination" leg | Retain for as long as the person remains employed, plus the applicable period after they eventually leave. |
A worked example: an employee hired March 1, 2023 and terminated August 1, 2026 worked more than two years, so the controlling date is one year after termination: August 1, 2027. An employee hired the same day but terminated after eight months, on November 1, 2023, worked less than two years, so the controlling date is three years after hire: March 1, 2026, even though that is only about 28 months after the termination date itself. Calculate both dates for every departing employee rather than applying a flat rule of thumb, since guessing which one is later gets easy to get backward for tenures near the two-year mark.
Storage: paper, microfilm, or electronic
USCIS's guidance accepts three storage approaches, and an employer can mix them across different periods of its own history rather than needing one uniform system:
- Paper. Original signed forms, kept on-site or at an off-site storage facility, as long as they can be produced within three business days of an inspection request, the same production window ICE's own Notice of Inspection process uses.
- Microfilm or microfiche. Permitted if the film stock preserves the image for the entire retention period, the employer maintains equipment to view and reproduce it, and an index is placed at the beginning of the first roll or the end of the last one so a specific form can actually be located.
- Electronic. Governed by 8 CFR 274a.2. The system must include reasonable controls, an indexing system functionally comparable to a reasonable hardcopy filing system (it does not need a separate documents database if the same result is achievable another way), and an audit trail: a secure, permanent record of the date of access, the identity of whoever accessed the record, and the action taken, whenever a record is created, completed, updated, modified, altered or corrected. Simply viewing a record without changing it does not need to appear in the audit trail; changing it does.
At the point of an actual inspection, whichever storage method you use, you must be able to retrieve and reproduce the requested Forms I-9, along with supporting documentation and, for an electronic system, the associated audit trails, within the timeframe requested. A storage system that is technically compliant but that nobody at your organization can actually operate under time pressure is not really compliant; test retrieval before you need it for real.
Keep I-9s separate from personnel files
Federal law does not require a separate I-9 file, but it is the standard practice for two practical reasons. First, an inspection or audit request is for I-9s specifically; a separate file lets you produce exactly what was asked for without exposing performance reviews, disciplinary records, or medical information that happen to share a folder. Second, I-9s and personnel files run on different retention clocks: an I-9 can often be purged well before a personnel file's own retention period (which may be driven by unrelated wage, tax, or benefits recordkeeping rules) ends. Mixing the two files means you either purge I-9s too late, holding onto discoverable paperwork longer than required, or risk purging something from the personnel file too early by mistake.
What "relevant to a complaint" does to the clock
If a discrimination, harassment or other complaint is filed against your organization, the ordinary retention clock stops being the only one that matters. Records relevant to that complaint, which can include I-9s and related hiring records for the complaining party and for other candidates or employees in comparable positions, need to be preserved until the complaint and any related proceedings are fully and finally resolved, even if the standard three-years/one-year formula would otherwise have allowed destruction sooner. Build a litigation-hold step into your process: when a complaint or charge arrives, flag every I-9 that could be relevant before running your normal purge schedule.
Retention across multiple worksites and staffing placements
A company with several locations does not need to keep every I-9 at a single central address, but it does need to be able to produce a requested form within the same inspection timeframe regardless of where it is physically stored, and it needs one person or system that knows what exists where. For a staffing agency, the legal employer of record for I-9 purposes is usually the agency, not the client site the worker is placed at, so the agency's retention clock, not the client's, governs, and the agency needs to track retention across every worker it has ever placed, not only its own internal headcount. A client company that mistakenly believes it holds no retention obligation for placed workers, and a staffing agency that assumes the client is tracking this, is a gap that surfaces only when an inspection actually asks who has the form.
A retention and purge checklist
- For every terminated employee, calculate both the three-years-from-hire date and the one-year-from-termination date, and record whichever is later as the destroy-eligible date.
- Run a purge review on a fixed schedule, such as annually, rather than trying to track each form's individual date in real time.
- Before purging anything, check for open complaints, charges, audits or litigation holds that would require keeping a specific form longer.
- Keep I-9s in their own file or system, separate from personnel files, with its own access log.
- If storing electronically, confirm your system actually produces an audit trail on edits, not just on views, and test that you can retrieve a specific form within a few business days.
- Document your retention policy in writing, including who is responsible for the periodic purge, so it survives staff turnover in the HR or compliance function.
- Do not destroy a form the moment it becomes eligible if you are not confident no hold applies; being a little late costs little, being early can destroy evidence you needed.
Common mistakes
| What people assume | What the rule requires |
|---|---|
| "Three years from hire always applies" | Whichever of the two dates is later controls; for tenures over two years, that is one year after termination, not three years after hire. |
| "We can shred I-9s as soon as someone leaves" | The one-year-after-termination leg of the formula still applies, and a complaint can extend it further. |
| "Electronic storage just means keeping a PDF" | 8 CFR 274a.2 requires an indexing system and an audit trail recording who changed a record and when, not just a saved file. |
| "I-9s can live in the regular personnel file" | Standard practice keeps them separate, so they can be produced alone and purged on their own schedule. |
| "An open complaint doesn't change our retention schedule" | Records relevant to a complaint must be preserved until it and any related proceedings are fully resolved, regardless of the standard formula. |
Questions people ask
How long do we have to keep a Form I-9?
Three years after the date of hire, or one year after employment ends, whichever is later. For an employee who worked less than two years, the three-years-from-hire date is always later; for one who worked more than two years, the one-year-from-termination date is always later.
Can we store Form I-9 electronically instead of on paper?
Yes. Federal regulations at 8 CFR 274a.2 permit electronic retention, provided the system includes reasonable controls, an indexing system functionally comparable to a reasonable paper filing system, and an audit trail recording who created, completed, updated, modified or corrected each record and when.
Do we have to keep Form I-9 separate from the personnel file?
It is not a federal requirement, but it is the standard recommended practice, because it lets you produce I-9s alone during an inspection or audit without exposing the rest of an employee's personnel file, and it lets you purge expired I-9s on their own schedule instead of disturbing personnel records that have a different retention period.
What do we do with a Form I-9 once the retention period ends?
You may destroy it, but you are not required to the moment the period lapses. Destroying one before the retention period ends is a violation; many employers instead purge on a set schedule, such as annually, rather than tracking each form's individual expiration date exactly.