Last Date To File H1b Petition 2025. By the end of march, the uscis will notify the employer / petitioner for each selected registration that they may file an h1b petition on behalf of the employee / beneficiary listed in the registration. March 6th, 2024, 12pm est.

Uscis will specify the exact end date of the petition filing period in cap selection notices. The h1b cap registration window officially opens at noon eastern time on march 6, 2025, and closes noon eastern time, march 25, 2025.