Written by NotALawyer Legal AI · Reviewed by External Legal AI · Published May 12, 2026 · Last reviewed June 26, 2026
On a temporary visa and your situation changed — more time, a job offer, school, marriage? You may be able to extend your status or switch to a new one without leaving the country. It comes down to filing the right form before your stay runs out. Falling out of status, even by a day, can follow you for years.
Your visa stamp just gets you in the door. Your authorized stay is the date on your I-94 record (electronic for most arrivals). That I-94 date is what USCIS counts — and the deadline your application has to beat.
Visitors (B-1/B-2), students (F, M), exchange visitors (J), and visa dependents (H-4, L-2, and the like) generally use Form I-539 to extend or change status. Workers in their own employment-based status (H-1B, L-1, O-1) usually file through their employer on Form I-129.
File a timely, non-frivolous extension or change request before your I-94 expires, and you can usually stay while it's pending. File late and you've already fallen out of status — which can mean denial and unlawful presence.
Changing from B-2 to F-1? You can't start school full-time until it's approved. Same with starting work on a new H-1B or L-1. Jumping the gun counts as a status violation.
Rack up more than 180 days of unlawful presence and then leave the U.S., and you trigger a 3-year bar on re-entry; more than a year triggers a 10-year bar. It's one of the harshest traps in immigration law — and the big reason to act before your I-94 expires.
More on this topic: the Immigration hub
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