STEM OPT extension 2026 — plain overview

One-sentence answer: The STEM OPT 24-month extension requires three conditions that must all be met before filing: a qualifying STEM degree with the correct CIP code, an active post-completion OPT Employment Authorization Document (EAD), and an E-Verify-enrolled employer willing to sign Form I-983 as the training supervisor. Missing any one of these conditions means the extension cannot be approved.

Start here if

You are an F-1 student currently on post-completion OPT and want to understand whether you qualify for the 24-month STEM OPT extension. This overview covers the eligibility shape; the canonical STEM OPT extension checklist covers the detailed filing requirements, timeline, and evidence specifications.

The three conditions for STEM OPT eligibility

1. A qualifying STEM degree with a matching CIP code

Your degree must be in a field the Department of Homeland Security has designated as STEM. The degree's CIP code must match one on the DHS STEM Designated Degree Program List. This list includes traditional STEM fields (engineering, computer science) as well as data analytics, financial mathematics, and certain social science research methods.

The CIP code on your I-20 must match the STEM-designated code. If it does not, your DSO may need to correct it before filing. This is a common error: students enrolled in STEM programs that have a non-STEM CIP code on their I-20.

2. An active post-completion OPT EAD

You must be in a valid period of post-completion OPT when you file the STEM OPT extension. The I-765 for the STEM extension must be filed before the post-completion OPT EAD expires. USCIS recommends filing at least 90 days before the EAD expiration date but no earlier than 120 days before expiration.

If your post-completion OPT EAD is about to expire and you have not yet filed the STEM OPT extension, you risk a status gap. There is no grace period for late filing: if the EAD expires before USCIS receives the I-765, the extension application must be denied. Plan to file well before the expiration date, not on it.

3. An E-Verify employer willing to sign Form I-983

Your employer must be enrolled in E-Verify under the same EIN that employs you. Not all employers participate; check your employer's E-Verify status before planning a STEM OPT extension. Some employers are enrolled under one EIN but use another for STEM OPT workers.

The employer must also sign Form I-983 (Training Plan for STEM OPT Students) as the training supervisor. The form requires the employer to describe learning objectives, evaluation methods, and how the training relates to the student's degree.

Unemployment days and the STEM OPT extension

The standard OPT 90-day unemployment cap and the STEM OPT 150-day unemployment cap are separate and cumulative. Total unemployment across all of OPT (post-completion + STEM OPT) must not exceed 150 days. Unemployment accrued during post-completion OPT counts toward the 150-day total. If you accrued 30 unemployment days during the first 12 months of OPT, you have 120 days remaining during the 24-month STEM OPT extension.

Each day between jobs counts as an unemployment day. Volunteering or unpaid internships do not necessarily count as employment for unemployment cap purposes — only work that qualifies under the DHS definition of employment satisfies the requirement. Track every day carefully and report your employer information in the SEVP Portal promptly after any job change.

Filing timeline and key dates

1. 120 days before EAD expiration: Earliest date to file I-765 for STEM OPT extension.
2. 90 days before EAD expiration: Recommended filing window opens. By this point, the I-983 should be complete and signed by both employer and DSO.
3. Before EAD expiration: I-765 must be received by USCIS before the current EAD expires. A late-filed I-765 will be denied.
4. EAD expiration date: Post-completion OPT ends. If the STEM OPT extension I-765 was timely filed, work authorization continues automatically (up to 180 days while the application is pending).
5. I-765 receipt notice: Once USCIS issues the receipt (Form I-797), the student can work during the 180-day automatic extension period if the original EAD has expired.

Common risks and mistakes

• Wrong CIP code on I-20. The degree's CIP code on the I-20 must match the DHS STEM Designated Degree Program List. A mismatch can delay or deny the extension.
• Employer not E-Verified. The employer must be enrolled in E-Verify before the I-765 is filed, not after. Some employers delay E-Verify enrollment; confirm before the filing window opens.
• Late I-983 filing. The I-983 must be signed and submitted with the I-765. Preparing it at the last minute leads to errors in the training plan, employer information, or evaluation dates.
• Missing the 150-day unemployment cap. The cumulative cap across both OPT periods is 150 days total. Students who used unemployment days during post-completion OPT may have fewer days remaining for the STEM OPT extension than they expect.
• Filing window miscalculation. USCIS filing windows are based on the EAD expiration date, not the OPT start date. Calculate using the EAD end date printed on the card.

What this summary does not do

This page is a plain-English overview of STEM OPT extension eligibility. It does not replace the legal guide, your DSO, or USCIS regulations. Verify all deadlines, form editions, and employer requirements against the official sources below before filing. This page does not provide legal advice or guarantee approval.

Go deeper

Read the full STEM OPT extension checklist: STEM OPT 24-month extension checklist for the three-part eligibility test, filing window, I-983 requirements, E-Verify verification steps, and evidence specifications.

For the E-Verify employer-identity test and what to do if your employer is not yet enrolled, read STEM OPT E-Verify requirements.

For the transition from STEM OPT to longer-term immigration pathways (H-1B, self-petition, or employer-sponsored green card), read the green card pathways overview: green card after opt.

This guide is general information, not legal advice for your specific situation. A licensed attorney or regulated adviser should review your documents before you rely on a strategy or deadline.