STEM OPT in plain English: 24 more months of work — and the strings attached.

The basics

What STEM OPT is

The STEM OPT extension adds 24 months to your initial 12-month post-completion OPT — 36 months of work authorization in total. In practical terms, that's the difference between one shot at the H-1B lottery and roughly three. It's the reason a STEM degree carries so much weight on the student-to-worker path.

It is an extension, so it only exists on top of an active period of regular OPT. You can't apply for it on its own, and — a key difference from regular OPT — you can't apply during the 60-day grace period after OPT ends. You have to file while your initial OPT is still running.

Source: USCIS — STEM OPT Extension.

The basics

Who qualifies

To extend, you need:

• a bachelor's, master's, or doctoral degree whose CIP code is on the DHS STEM Designated Degree Program List, from a school that's accredited and SEVP-certified. Check the code on page 1 of your I-20 against the list — if it isn't there, you don't qualify, no matter what the major is called;
• to be in an active period of post-completion OPT when you apply;
• and a job offer from a qualifying employer (more on that next).

Two useful wrinkles. You can base a STEM extension on a previously earned U.S. STEM degree even if your current OPT is on a non-STEM degree — provided that earlier degree was conferred within the past 10 years, both schools were accredited and SEVP-certified, and you haven't already used a STEM extension on it. And unlike regular OPT (once per degree level), the STEM extension is available twice in a lifetime, on two separate STEM degrees at progressively higher levels — for example, one after a bachelor's and another after a master's.

Sources: USCIS — STEM OPT · DHS — STEM OPT Hub & degree list.

The gate

Your employer must be on E-Verify

This is the single requirement that stops the most students. The company you work for during STEM OPT must be enrolled in E-Verify, the federal employment-eligibility system, with a valid employer identification number — and its E-Verify company ID has to appear on your training plan. If your employer isn't enrolled, USCIS will deny the extension. Full stop.

This matters most at small companies and early-stage startups, many of which never enrolled in E-Verify. So if you intend to use STEM OPT, confirm enrollment before you accept the offer — ask HR directly. A great job at a company that won't enroll is, for STEM-OPT purposes, a dead end.

Source: USCIS — STEM OPT (employer requirements).

The paperwork

Form I-983: the training plan

STEM OPT is built around Form I-983, a training plan you and your employer complete together. It spells out how the job relates to your degree, what you'll learn, how you'll be supervised, and how the role moves your career forward. Unlike the I-765, the I-983 is not filed with USCIS up front — your DSO keeps it on record, though USCIS may later request a copy as evidence (for instance, in a Request for Evidence). "Not filed" doesn't mean "never seen."

Two things to get right. First, your employer signs attestations on it — including that hiring you won't displace a U.S. worker and that your pay, hours, and duties are commensurate with similarly situated U.S. employees. Second, be specific: a vague plan ("software development") is one of the top reasons applications draw a Request for Evidence. Name real projects, tools, and skills ("building machine-learning pipelines in Python and TensorFlow for fraud detection"). And every time you change employers, you need a new I-983 submitted to your DSO before you start the new role.

Sources: DHS — STEM OPT Hub (I-983 tutorial) · 8 CFR 214.2(f)(10)(ii)(C).

The differences

How STEM OPT is stricter than regular OPT

If you treat STEM OPT like the first 12 months, you can fall out of compliance. The key differences:

• No unpaid work, no volunteering. Regular OPT allows lawful unpaid internships; STEM OPT does not. DHS specifically decided against permitting volunteer arrangements — the position must be paid, with compensation commensurate with U.S. peers.
• At least 20 hours a week. The rule writes in a hard 20-hour-per-week floor for the STEM position itself — and hours, duties, and pay all sit inside that same "commensurate with similarly situated U.S. workers" standard. It's built for real structured employment, not a casual stopgap.
• A real employer who actually trains you. The employer that signs your I-983 must be the same entity that provides the training — not an "employer in name only." Staffing and consulting firms generally can't place you at a client and hand off the training, which rules out most bench-and-deploy arrangements.
• Self-employment is effectively out. You can't be your own supervisor on paper. A genuine startup can qualify, but only if it meets every requirement — a bona fide employer-employee relationship, E-Verify, the resources to actually train you, and commensurate compensation.
• 150 days of unemployment, total. The STEM extension adds 60 days to your original 90, for 150 cumulative days across the whole OPT-plus-STEM period.
• Site visits. DHS may visit your employer (usually with 48 hours' notice) to confirm the training matches the I-983.

Sources: DHS STEM OPT final rule (81 FR 13040, 2016) · USCIS — STEM OPT.

Applying

How and when to file

As with regular OPT, your DSO recommends the extension in SEVIS (after you give them the completed I-983) and issues a new I-20; then you file Form I-765. The deadlines:

• You can file the I-765 up to 90 days before your current OPT EAD expires — and you must file before it expires. Miss that and you lose the extension; there's no grace-period filing here.
• USCIS must receive your I-765 within 60 days of your DSO's STEM recommendation (note: 60 days for STEM, versus 30 for the initial OPT).

The 180-day rule. If you file on time and your current OPT expires while the extension is still pending, your work authorization is automatically extended for up to 180 days while USCIS decides — your receipt notice plus the expired EAD are your proof. (Reassuringly, the much-discussed end of automatic EAD extensions in October 2025 does not touch this — it lives in a separate regulation. If the case is still pending past 180 days, you stop working but may remain in the U.S.)

The fee is the same as regular OPT: $470 online or $520 paper, with optional premium processing ($1,780). Decisions typically take a few months. And note a 2026 change: under a USCIS policy update effective December 12, 2025, self-taken photos are no longer accepted for the EAD — applicants may be scheduled for a biometrics appointment at an Application Support Center, so build in extra time and confirm current USCIS instructions before filing.

Sources: USCIS — STEM OPT · 8 CFR 214.2(f)(11) (180-day rule) · USCIS — fees.

While on STEM OPT

Reporting: heavier than regular OPT

The reporting load is real, and missing it can terminate your record:

• Validation reports every 6 months (at 6, 12, 18, and 24 months) to your DSO, confirming your name, address, employer, and status — even if nothing has changed.
• Self-evaluations on your training progress at the 12-month and 24-month marks (the 24-month one is the final evaluation), each signed by you and your supervisor and submitted within 10 days of the mark. A final evaluation is also due whenever a job ends.
• Material changes — a change in the employer's EIN, a pay cut not tied to fewer hours, a significant drop in hours, or any change to your training objectives — require a modified I-983.
• The general 10-day rule still applies to changes of name, address, employer, or status. Your employer, separately, must report your termination or departure within 5 business days.

Source: DHS — STEM OPT Reporting Requirements.

What comes next

The bridge to H-1B

Those extra 24 months exist largely to give you more attempts at H-1B. If your employer files a timely cap-subject H-1B petition while you're on STEM OPT, cap-gap bridges you into H-1B status — and under the current rule it now extends your status and work authorization until April 1 of the relevant fiscal year (or the petition's start date, if earlier), not the old October 1 cutoff. We cover the H-1B lottery and the recent changes in their own guide.

Read next: The H-1B changes of 2025–2026, in plain English · Source: 8 CFR 214.2(f), eCFR (cap-gap).

What's settled vs moving

What could change

The STEM OPT framework above is settled, and it has survived legal challenge — the rule was contested in court and left in force. Two things are nonetheless in motion. The biometrics/photo change above (December 2025) is new and procedural — confirm the current process before you file. And further upstream, DHS proposed in August 2025 to replace F-1 "duration of status" with fixed admission periods; it remains a proposal, not final, but would reshape the F-1 status clock that STEM OPT sits inside. OPT and STEM OPT also draw recurring political attention, so anything dramatic you read deserves the same test: check the date, and check it against the official source.

Sources: DHS fixed-period proposed rule (Aug 28, 2025) · USCIS — STEM OPT.