STEM OPT: 24-Month Extension and Updated Rules for 2026

The OPT (Optional Practical Training) and its 24-month extension for STEM fields remain the most widely used pathway for international students on F-1 visas to enter the U.S. job market after graduation. In August 2024, USCIS published a Policy Manual update that reorganized rules on school transfers, online coursework, study-abroad periods, and the window for filing the STEM extension. In 2026, that framework remains in effect, but now coexists with significant adjudication delays and regulatory proposals that could shorten the post-OPT grace period.

This guide covers, in practical terms, how the program currently works, the STEM extension requirements, the policy updates consolidated from the USCIS memorandum, and the critical issues affecting students filing applications right now. Even though the program itself has not been revoked, several operational parameters – filing deadlines, processing times, the risk of a gap between the EAD and the employment start date – demand extra attention from both the student and the employer.

How OPT Works

The OPT is a temporary work authorization granted to students in F-1 status enrolled in or about to complete a bachelor’s, master’s, or doctoral program at a SEVP-certified institution. The post-completion option offers up to 12 months of work directly related to the field of study, and the student must have completed at least nine months as a full-time student before filing.

The application is submitted to USCIS using Form I-765, following a recommendation from the Designated School Official (DSO) and an update to the SEVIS record. Once approved, the student receives an EAD (Employment Authorization Document) with a start and end date. During the initial OPT period, the student may not accumulate more than 90 days of unemployment without risking loss of status.

24-Month STEM OPT Extension

Students who graduated in fields classified as Science, Technology, Engineering, and Mathematics may apply for a 24-month extension on top of the initial OPT, for a total of up to 36 months of work authorization. The list of eligible STEM fields is maintained by the Department of Homeland Security (DHS) and reviewed periodically; the degree must be tied to a CIP code on that list.

Eligibility Requirements

• Bachelor’s, master’s, or doctoral degree in an eligible STEM field from a SEVP-accredited institution.
• Active post-completion OPT period at the time of the application.
• Employer enrolled in the E-Verify program, offering at least 20 paid hours per week with activities directly related to the STEM degree.
• Formal training plan documented on Form I-983, describing learning objectives, supervision, and assessment metrics.
• Application received by USCIS within 60 days of the DSO recommendation and before the current OPT expires.

When the filing is done correctly and the application remains pending after the original EAD expires, there is an automatic extension of up to 180 days of work authorization. The USCIS receipt notice (Form I-797) combined with the expired EAD and the updated I-20 serves as proof of this extended authorization.

STEM Policy Updates

The USCIS memorandum from August 2024, now consolidated in Policy Manual Volume 2, Part F, Chapter 5, formalized points that had previously caused operational uncertainty. The highlights that continue to apply in 2026 are:

• Online coursework: one course or three credits per semester may count toward the full course of study even if entirely remote, with no in-person attendance requirement.
• Transfers: students may transfer between SEVP-certified schools at the same educational level or move to a higher level, with the DSO updating SEVIS accordingly.
• Grace period during transition: during the 60 days following OPT, students may change educational level, transfer to another SEVP-certified school, or file a change of status with USCIS.
• Study abroad: study abroad programs lasting less than five months preserve the active SEVIS record; programs exceeding that period require a new Form I-20 upon return.
• Multiple STEM extensions: a second 24-month period may be requested if the student subsequently earns a new STEM degree at a higher level.

Grace Period

The 60-day grace period following OPT EAD expiration remains the current rule, with important caveats in 2026. This benefit is forfeited if the student exceeded 90 days of unemployment during OPT (or 150 days during the STEM extension). During the grace period, employment is prohibited; the purpose is to organize departure from the country, transfer status, change programs, or file for a new visa category.

There is a regulatory proposal under discussion that would reduce the grace period from 60 to 30 days. As of this date, nothing has been finalized and the rule remains at 60 days for all active F-1 students. It is worth monitoring regulations published in the Federal Register before making logistical decisions based on the longer deadline.

USCIS Delays in 2026

The 2026 landscape has introduced a new operational challenge: long USCIS queues for OPT and STEM extension adjudications. Reports from specialized outlets indicate that tens of thousands of students faced temporary uncertainty due to processing delays, even with the I-765 filed within the regulatory window.

The practical consequence is that the 180-day automatic extension window may be partially consumed by the backlog, creating a real risk of an employment gap between the initial EAD and the STEM extension EAD. The recommendation has been to file as early as permitted – the 90-day window before the current OPT ends – and to maintain active communication with the DSO and the employer’s immigration department.

Common Mistakes to Avoid

• Filing the STEM extension after the post-completion OPT expires, even within the 60 days following the DSO recommendation.
• Working for an employer without an active E-Verify registration during the STEM extension period.
• Allowing the I-983 to become outdated after a change in role, salary, or supervisor; late reports can jeopardize status.
• Exceeding the unemployment limit (90 days during the initial OPT, 150 days during the extension) and forfeiting the 60-day grace period.
• Working during the grace period, even on an unpaid basis, which is prohibited.

OPT remains the standard gateway to the U.S. job market after a STEM degree, but the combination of USCIS backlogs, regulatory proposals, and employer compliance requirements leaves little room for improvisation. Small details – the filing window, E-Verify registration, I-983 updates – make the difference between a clean transition to H-1B or a Green Card and a forced interruption of the stay.

About the author

Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.