I-9 Reverification Date Calculator (Supplement B)

What it computes

Reverification is the employer's check, on Supplement B of Form I-9 (formerly Section 3), that an employee whose permission to work runs out is still allowed to work. The regulation sets one deadline:

The calculator reads the document the employee presented and returns that date, or tells you the document never triggers reverification. USCIS is plain about the second group: “Reverification is never required for U.S. citizens or noncitizen nationals. Reverification is also never required when the following documents expire: U.S. passports, U.S. passport cards, Permanent Resident Cards (also known as Green Cards), and List B documents.” Its Supplement B page lists them under “Employers should not reverify”. The I-9 document checker shows which list each document sits on.

Two dates on the form: use the earlier

Section 1 may show the date the employee's work authorization expires, and Section 2 shows the date the document expires. They do not always match. USCIS's Supplement B page says: “You must reverify by the earlier date when reverification is necessary.” Enter the Section 1 date and the tool picks the earlier one.

Automatic EAD extensions changed on October 30, 2025

An EAD that looks expired, shown with a Form I-797C receipt for its renewal, used to carry an automatic extension of up to 540 days. A DHS rule removed that for renewals filed on or after October 30, 2025 (90 FR 48799), unless a law or Federal Register notice provides otherwise. Renewals received before that date in an eligible category still run up to 540 days from the “Card Expires” date, or until USCIS decides the renewal, whichever comes first. TPS-based EADs (A12, C19) are capped by H.R. 1, and H-4, E and L-2 spouses (C26, A17, A18) stop at their Form I-94 end date. In every case, USCIS: “Employers must reverify employment authorization at the end of the automatic extension period.”

Rehires within three years

If you rehire someone within three years of the date their original Form I-9 was completed, you may update that form on Supplement B instead of starting a new one (8 CFR 274a.2(c)(1); M-274 § 6.2). Tick the rehire box and the tool checks the window and whether the old document has run out. Past three years, the employee completes a new Form I-9. A form updated for a rehire is kept three years from its first completion or one year after employment ends, whichever is later (8 CFR 274a.2(c)(2)); the I-9 retention calculator dates it.

Worked example

Seven employees at one small employer, each with the document they showed at hire. The third row is the one most often missed: a renewal filed after October 29, 2025 gets no automatic extension, so the card date stands.

For the first employee, USCIS's 90-day suggestion means a notice by December 15, 2026. Whatever the employee brings, they choose it from List A or List C, and you record it on Supplement B. E-Verify employers in good standing may examine it under the remote alternative procedure, which has its own box on Supplement B. An I-9 self-audit is the place to catch reverifications that slipped.

State notes

• Federal

Reverification is a federal Form I-9 rule, so the date is the same in every state. E-Verify does not change it: no E-Verify case is created for a reverification. Some states make E-Verify mandatory for new hires; see E-Verify requirements by state and E-Verify for employers.

Tracking many expiring documents by hand is where reverifications get missed. The I-9 software comparison notes which systems send Supplement B reminders, and the Form I-9 employer guide covers Sections 1 and 2 and both supplements.