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For international students on an F-1 visa, the STEM OPT extension is one of the most valuable work-authorisation benefits available in the United States. It lets eligible graduates in science, technology, engineering, and mathematics fields work for an extra two years after their initial period of Optional Practical Training (OPT) ends. This guide explains, in plain terms, how the STEM OPT extension works in 2026 – who qualifies, what employers must do, how long you can stay, and the exact steps to apply.
Optional Practical Training is the temporary employment that F-1 students use to gain hands-on experience directly related to their field of study. Standard post-completion OPT lasts up to 12 months. The STEM OPT extension adds a further 24 months on top of that, giving qualifying students up to three years of work authorisation before they need another status such as the H-1B. Because a US degree remains a major draw even as international student numbers shift, understanding this benefit is essential for anyone studying in a STEM field.
The benefit was created to keep talented graduates in high-demand fields connected to the US economy for longer. For students, it means more time to earn, to grow professionally, and to line up a longer-term route to staying in the country. For employers, it means access to skilled early-career talent while the more competitive H-1B process plays out. The sections below walk through each rule in turn, with tables you can scan quickly and a step-by-step application checklist.
What Is the STEM OPT Extension?
The STEM OPT extension is a 24-month extension of post-completion OPT available to F-1 students who earn a qualifying degree in an eligible STEM field. It is not a separate visa; the student stays in F-1 status throughout. Instead, it extends the work authorisation a graduate already holds under standard OPT.
The purpose of the STEM OPT extension is to give graduates in high-demand technical fields more time to build practical, degree-related experience with a US employer. It also acts as a bridge: the extra 24 months buys time to enter the H-1B lottery more than once. To see how OPT fits within the wider set of study routes, read our guide to the types of USA student visa and how the F-1 student visa works.
One important distinction: standard OPT is available to F-1 graduates in almost any field, while the 24-month extension is reserved for eligible STEM degrees. That is why the two are often discussed together but applied for separately – you must already be on approved post-completion OPT before you can extend it. The comparison below shows the practical differences side by side.
| Feature | Standard Post-Completion OPT | STEM OPT Extension |
|---|---|---|
| Duration | Up to 12 months | Additional 24 months |
| Total work authorisation | 12 months | Up to 36 months combined |
| Eligible degrees | Any F-1 qualifying degree | Qualifying degree on the DHS STEM Designated Degree Program List |
| Employer E-Verify enrolment | Not required | Required (employer in good standing) |
| Form I-983 training plan | Not required | Required |
| Maximum unemployment | 90 days | 150 days combined (90 + 60) |
| Application form | Form I-765 | Form I-765 (after DSO recommendation) |
STEM OPT Extension Eligibility Requirements
To qualify for the STEM OPT extension, you must meet several conditions at once. You must currently be in a valid period of post-completion OPT. Your qualifying degree must appear on the DHS STEM Designated Degree Program List. The degree must have been awarded by a school certified by the Student and Exchange Visitor Program (SEVP). And your training opportunity must be directly related to that STEM degree.
A common point of confusion is which degree counts. You can sometimes base a STEM OPT extension on a previously earned STEM degree, even if your most recent degree is not in a STEM field, provided the earlier degree is from an accredited SEVP-certified institution and the practical training relates to it. The table below summarises the core eligibility requirements.
| Requirement | What It Means |
|---|---|
| Valid F-1 status on OPT | You must currently be in an approved period of post-completion OPT |
| Qualifying STEM degree | Your degree must appear on the DHS STEM Designated Degree Program List |
| SEVP-certified school | Degree awarded by an accredited, SEVP-certified US institution |
| Job related to the degree | Training must be directly related to your qualifying STEM field |
| E-Verify employer | Employer must be enrolled in and using E-Verify in good standing |
| Signed Form I-983 | Training plan completed and signed before you apply |
Employer Requirements: E-Verify and Form I-983
The STEM OPT extension places clear obligations on your employer, not just on you. Two requirements matter most. First, the employer must be enrolled in E-Verify and remain a participant in good standing. A staffing or consulting firm can employ a student on the extension, but only if that firm is the entity actually providing the training and it maintains a genuine employer-employee relationship with the student.
Second, the student and employer must complete and sign Form I-983, the “Training Plan for STEM OPT Students,” before the student applies. On the I-983 the employer attests that it has enough resources and trained staff to properly train the student, that the student will not replace a US worker, and that the role will help the student meet defined training goals. The plan must spell out how the work relates to the STEM degree and what knowledge and skills the student will gain.
Working at a Client or Third-Party Site
This is the area the older rules handled most confusingly, so it is worth stating the current position clearly. A student on a STEM OPT extension may work at a site other than the employer’s main place of business – including a client or customer location – as long as all training obligations are met and a bona fide employer-employee relationship is maintained.
However, the E-Verify employer that signs Form I-983 may not delegate its training responsibilities to a non-employer third party such as a client, the client’s employees, or the client’s contractors. In practice, arrangements like labour-for-hire consulting, “temp” placements, and multiple-employer setups can struggle to qualify, because they cannot always show that the sponsoring employer is the one actually delivering the training.
Unemployment Limits During the STEM OPT Extension
Time spent unemployed is capped. During the initial 12-month period of post-completion OPT, a student may accrue up to 90 days of unemployment. The STEM OPT extension adds 60 more days, for a maximum of 150 days of unemployment across the full OPT period. Exceed the limit and you risk falling out of status, so tracking unemployment days carefully is one of the most important habits for anyone on the extension.
STEM OPT Reporting and Compliance
The STEM OPT extension comes with ongoing reporting duties that catch many students off guard. You must confirm to your Designated School Official that your name, address, employer, and status details are still accurate at least every six months, and report any change of address or employer within 10 days. Missing these check-ins can jeopardise your status just as surely as exceeding the unemployment limit.
You and your employer also share responsibility for the Form I-983 training plan over its life. Students submit a self-evaluation of their progress – an initial evaluation partway through and a final evaluation at the end of the training period – and both must be signed by the employer. If your role, hours, or supervisor change materially, the training plan usually needs to be updated and re-submitted to your DSO.
How to Apply for the STEM OPT Extension
Applying for the STEM OPT extension follows a clear sequence. You complete Form I-983 with your employer, take it to your Designated School Official (DSO), and the DSO recommends the extension in your SEVIS record and issues an updated Form I-20. Only then do you file Form I-765, the “Application for Employment Authorization,” with USCIS to request the new Employment Authorization Document (EAD).
Timing matters. You must file the extension application before your current OPT authorisation expires, and you can generally do so up to 90 days beforehand. If you file on time and your initial OPT expires while the application is pending, you may keep working for up to 180 days while USCIS decides. Check the current Form I-765 filing fee on the USCIS STEM OPT page before you apply, as fees change.
| Step | Action |
|---|---|
| 1 | Confirm your degree is on the DHS STEM Designated Degree Program List and that your job relates to it |
| 2 | Complete and sign Form I-983 with your E-Verify employer |
| 3 | Submit the completed Form I-983 to your Designated School Official (DSO) |
| 4 | DSO recommends the STEM OPT extension in SEVIS and issues an updated Form I-20 |
| 5 | File Form I-765 with USCIS, up to 90 days before your current OPT expires |
| 6 | Keep working up to 180 days while the application is pending if your OPT expires |
| 7 | Begin the 24-month extension once USCIS approves your new EAD |
STEM OPT Extension and the H-1B Cap-Gap
For many graduates, the STEM OPT extension is a stepping stone to the H-1B work visa. Because the H-1B is capped and awarded by lottery, the extra 24 months meaningfully improves the odds of selection across multiple years. If your employer files an H-1B petition and you are selected, the “cap-gap” provisions can extend your F-1 status and work authorisation to bridge the wait until the H-1B start date on 1 October. If you are not selected, the remaining time on your extension lets you keep working legally while you weigh other options.
What Happens After the STEM OPT Extension Ends?
When the 24 months run out, work authorisation under OPT ends and you need another basis to keep working in the United States. The most common next step is the H-1B, but it is not the only one. Some graduates move to an employer-sponsored visa such as the O-1 for individuals with extraordinary ability, transfer within a multinational company on an L-1, or pursue further study to reset their eligibility. Others use the runway the STEM OPT extension provided to build the record – publications, patents, promotions – that supports a stronger long-term petition. Planning this transition early, ideally in the first year of the extension, gives you the most options and the least last-minute stress.
| Key Takeaways |
| – The STEM OPT extension gives F-1 STEM graduates 24 extra months of work authorisation on top of the 12-month OPT period – up to 36 months in total. |
| – You must hold a qualifying degree on the DHS STEM Designated Degree Program List and work a job directly related to it. |
| – Your employer must be enrolled in E-Verify and must sign Form I-983, the training plan. |
| – You can work at a client site, but the sponsoring employer must deliver the training and keep a bona fide employer-employee relationship. |
| – Up to 150 days of unemployment are allowed across OPT and the STEM OPT extension combined. |
| – File Form I-765 before your OPT expires; you may keep working up to 180 days while it is pending. |
| – The STEM OPT extension is often used as a bridge to the H-1B via the cap-gap. |
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