STEM OPT in 2026: The F-1 Extension and What the New Rules Change

You did not spend two years and a lot of money on a US degree just to fly home the week after graduation. You want to put the degree to use, earn in dollars for a while, and maybe build towards something longer term. For most F-1 students the route to that is OPT — and the real questions are how long it can last and whether the rules are about to change.

They are changing. So here is what OPT is, who gets the extra time, and what the new 2026 rule adds to the process. We are being careful and caveated on purpose, because this is a moving target.

Start with the 12 months: post-completion OPT

Optional Practical Training (OPT) lets you work in the US in a field directly related to your degree. After you finish your programme, “post-completion” OPT gives you up to 12 months of that work on your F-1 status.

Twelve months is the baseline for every eligible graduate, whatever they studied. The extension below is what can turn that one year into three.

The 24-month STEM extension: who qualifies

If your degree is in a science, technology, engineering or maths field, you may be able to add a 24-month STEM extension on top of the 12 months — up to 36 months of OPT in total.

“STEM field” is not a vibe; it is a list. Your degree’s CIP code has to appear on the DHS STEM Designated Degree Program List. To qualify for the extension you generally need:

A bachelor’s degree or higher in a field on that DHS STEM list (matched by CIP code).
To already be in valid post-completion OPT. The extension builds on your first 12 months — it is not a separate thing you start from scratch.
A degree from an SEVP-certified, accredited school.
An employer enrolled in E-Verify and in good standing. This one catches people out: it is your employer’s status, not yours, and no E-Verify means no extension, however strong the job.
The allowance is one STEM extension per qualifying degree.

Staying compliant: the paperwork is the point

The STEM extension comes with obligations the first 12 months do not, and USCIS takes them seriously.

Form I-983, the “Training Plan.” You and your employer complete and sign this. It has to set out real learning objectives and show how your work connects to your degree — it is a training plan, not a formality. If the material facts change (employer, role, hours), the plan gets updated.

Reporting to your DSO. You confirm your details through validation reports, typically every six months, and you report material changes promptly — a new job, a new address, a change in your employer’s details. Miss these and it is your status at risk, not just your extension.

The unemployment limit. OPT allows only a limited stretch of unemployment. The cap is 90 days during your initial 12-month OPT, plus 60 more during the STEM extension — 150 days in total across the whole period. (Some blogs claim it was cut to 60 days. That is not what USCIS publishes; the figure to plan around is 90 + 60.)

When to apply

File for the STEM extension up to 90 days before your current OPT EAD expires. Do not leave it to the last week. Your DSO will walk you through the timing for your case — and the 2026 rule below makes getting that timing right more important than it used to be.

The big 2026 change: “Duration of Status” is ending

Here is the part that makes this post time-sensitive.

For decades, F-1 students were admitted for “duration of status” — an open-ended stay, valid as long as you kept studying and following the rules. On 17 July 2026, DHS published a final rule replacing that with a fixed admission period. It applies to the F, J and I categories.

In plain terms:

Instead of open-ended status, you get a fixed period of admission — the length of your programme, including practical training, up to four years — plus a 30-day grace period to depart. (English-language programmes are capped at 24 months.)
The rule is effective around 15 September 2026.
Going forward, students will generally need to file an Extension of Stay (EOS) with USCIS to begin or continue post-completion OPT or STEM OPT beyond the admission date on their record.

There is transition relief. If you are already in the US when the rule takes effect and you file for post-completion OPT or STEM OPT within about six months of the effective date — roughly by 18 March 2027 — you should not need a separate EOS for that request.

Be clear-eyed about what this is. DHS says the rule does not abolish OPT or the STEM extension, and it hasn’t. But it adds a filing step, and where there is a filing step there is timing risk: if your admission period runs out before an extension is approved, you could start accruing unlawful presence — something you very much want to avoid. The rule is also new and is widely expected to face legal challenges, so the details could still shift.

So do two things. Check the official DHS and USCIS pages for the current position rather than relying on any single blog — including this one. And talk to your school’s DSO early, because they will know how your specific programme dates and OPT timeline line up with the new admission period.

Where this leaves you

If the US is your plan, none of this should scare you off. OPT and the STEM extension are not going away — DHS has been explicit about that. It just means the timing and the paperwork now matter more than they used to, and getting the sequence right is worth doing deliberately.

If you want help thinking through whether a STEM-designated programme fits your goals, or how the OPT timeline works for a course you are considering, talk to us — and you can read more about studying in the USA first.

Sources & last reviewed

Last reviewed: 20 July 2026 — this area is changing fast; confirm with the official sources or your DSO before acting.