Optional Practical Training (OPT) is the main post-graduation work authorisation for F-1 students. It gives you 12 months of work in any field related to your degree. You don't need an employer sponsor to apply. Applications go to USCIS on Form I-765, and you can start the process up to 90 days before your programme end date.
If your degree is in an eligible STEM field, you can extend OPT by another 24 months, taking your total post-study work window to 36 months. Your employer has to be enrolled in E-Verify for the extension, and you have to work at least 20 hours a week per employer on a formal training plan. The list of eligible STEM CIP codes is maintained by the Department of Homeland Security and updated periodically.
Under current F-1 rules, your admission runs for the "Duration of Status" (D/S), meaning you can stay as long as your programme is active. There is a proposed federal rule that would replace this with a fixed four-year admission period requiring extensions from USCIS. As of mid-2026 the rule has completed its OMB review but has not yet been published in the Federal Register, so it isn't in force. We'll flag the current position on your consultation call.
For general information on OPT and STEM OPT eligibility, refer to the official USCIS guidance at uscis.gov. We're not immigration lawyers and this page is educational, not legal advice.