How to Apply for US OPT: Post-Master's Timeline, EAD, and STEM OPT Extension

For master's students in the U.S., the first step to staying and working after graduation is almost always OPT. OPT rules aren't overly complex, but the timing windows are extremely tight: apply too early and you can't; apply too late and you miss it; you can't start working before receiving your card; and there's a strict limit on unemployment days. Based on official guidelines from U.S. Citizenship and Immigration Services (USCIS) and the Department of Homeland Security's "Study in the States," this article breaks down the application steps, key deadlines, and regulations to follow during OPT and STEM OPT. For the basics of OPT and CPT, check out our guide on how to legally intern during graduate studies in North America.

I. Understanding the Types of OPT

• Regular OPT: You get 12 months for each higher degree level. It comes in two types:
  • Pre-Completion OPT: Used before the program end date; part-time only during the academic term;
  • Post-Completion OPT: Used after the program end date; at least 20 hours per week or full-time.
• STEM OPT Extension: Students in eligible STEM majors can extend their regular OPT by 24 months.
• Cap-Gap Extension: If your employer files a qualifying H-1B petition for you and your status expires before the H-1B takes effect, you can extend your status and work authorization.

Any OPT used before graduation counts toward this 12-month total, so plan carefully before using it.

II. Steps to Apply for Post-Completion OPT

Step 1: Get a DSO Recommendation

First, apply to your school's Designated School Official (DSO). The DSO will enter the OPT recommendation into the SEVIS system and typically issue an updated I-20.

Step 2: File Form I-765 with USCIS

This step has two time limits that must be met simultaneously:

1. File within 30 days of the DSO entering the recommendation;
2. File between 90 days before and 60 days after graduation.

In other words, don't get the DSO recommendation too early, or the 30-day deadline might fall outside the 90-day window. Also, don't wait too long after graduation, or you'll lose eligibility once the 60-day period expires.

Check the USCIS fee schedule (G-1055) or the fee calculator on their website for the application fee.

Step 3: Choose a Start Date

The start date for post-completion OPT cannot be later than 60 days after the program end date.

Step 4: Wait for Your EAD Card

Once approved, USCIS will mail your Employment Authorization Document (EAD) card. You cannot start working until the application is approved, you have received your EAD, and the start date on the card has arrived.

III. Rules to Follow During OPT

• Work must be directly related to your major.
• Unemployment limit: During post-completion OPT, you cannot accumulate more than 90 days of unemployment. Exceeding this may result in the termination of your SEVIS record.
• Timely reporting: Any changes to your name, address, employer, or other information must be reported within 10 days.
• Working at least 20 hours per week counts as being "employed."

IV. STEM OPT Extension

Who Can Apply

• Your major or secondary major is on the STEM Designated Degree Program List, or you have previously earned a STEM degree;
• Your degree is a bachelor's, master's, or doctoral degree, and it was earned within 10 years before the DSO recommendation date;
• Your employer must be enrolled in the E-Verify system;
• You must complete Form I-983 (Training Plan) with your employer and submit it to the DSO before they can make the recommendation.

When to Apply

• You can file as early as 90 days before your current OPT EAD expires;
• USCIS must receive your application within 60 days of the DSO entering the STEM OPT recommendation.

During STEM OPT

• The extension lasts for 24 months;
• Throughout the entire OPT and STEM OPT period, total unemployment cannot exceed 150 days;
• You must verify your information with the DSO at months 6, 12, 18, and 24;
• You must submit self-evaluations at months 12 and 24, as well as at the end of each employment period.

V. Example Timeline

For a master's student graduating in mid-May, the schedule could look like this:

1. Around February: Learn about your school's international student office OPT application process and required documents, and start job hunting;
2. Within 90 days before graduation: Apply for the DSO recommendation and get your new I-20;
3. Within 30 days after the DSO recommendation: File Form I-765 with USCIS;
4. After graduation: Wait for your EAD; only start working once you have the card and the start date has arrived;
5. During OPT: Keep track of your unemployment days and report on time; STEM students should prepare Form I-983 and the STEM OPT application in advance.

Exact dates depend on the program end date on your I-20 and your school's specific requirements.

VI. Changing Regulations: New Fixed Period of Stay Rule

In July 2026, the Department of Homeland Security issued a new rule to replace "Duration of Status" (D/S) with a fixed period of stay. If implemented, those on OPT or STEM OPT who exceed this fixed period may need to apply for a separate extension. USCIS has also introduced a new version of Form I-765 (dated September 15, 2026) for this purpose.

However, on September 14, 2026, the U.S. District Court for the District of Massachusetts issued an order delaying the rule's effective date and temporarily blocking the Department of Homeland Security from enforcing it. According to current information on the USCIS website, USCIS continues to accept the August 21, 2025 version of Form I-765 and is not accepting the new version for now. Before filing, always check the USCIS website to confirm which version of the form is currently accepted. See our summary of visa policy changes for details.

VII. Common Mistakes to Avoid

• Starting work before receiving your EAD—this is unauthorized employment and carries severe consequences;
• Filing more than 30 days after the DSO recommendation, which may lead to application denial;
• Failing to file within 60 days after graduation, resulting in the loss of post-completion OPT eligibility;
• Exceeding the unemployment limit, or working in a job unrelated to your major;
• Using an expired or incorrect version of the form—especially critical now that old and new versions coexist;
• Your STEM OPT employer is not enrolled in E-Verify, or Form I-983 is not submitted on time.

Final Thoughts

OPT is the most crucial step for staying and working in the U.S. after earning a master's degree. The rules aren't hard, but the timing is tight: DSO recommendations, application filing, start dates, and unemployment days all have strict deadlines. By understanding your school's process early and working backward from the deadlines, you can ensure a smooth transition.

To learn what U.S. employers look for in new graduates, check out our article on the NACE 2026 data. If you need help with internships, job searching, or OPT planning, feel free to chat with one of our counselors. This article does not constitute legal advice; for specific situations, please follow the guidance of your school's international student office.

Verification note: This article was verified on September 26, 2026. The OPT application time window, 30-day deadline, and EAD regulations are cross-referenced with the USCIS OPT page (updated November 25, 2024); OPT types, start dates, unemployment days, and reporting requirements are cross-referenced with the Department of Homeland Security's "Study in the States" OPT page (updated May 19, 2025); STEM OPT conditions and timelines are cross-referenced with its STEM OPT page (updated July 27, 2026); the new Form I-765 and court order details are cross-referenced with the USCIS I-765 page (updated September 15, 2026). The statement that "STEM OPT can be filed as early as 90 days before EAD expiration" is based on a search snippet from the USCIS website. Please refer to the USCIS fee schedule for application fees. Policies are subject to change; please refer to the latest official information.

References:

• USCIS：Optional Practical Training (OPT) for F-1 Students
• USCIS：OPT Extension for STEM Students
• USCIS：I-765, Application for Employment Authorization
• USCIS：G-1055, Fee Schedule
• Study in the States：F-1 Optional Practical Training (OPT)
• Study in the States：F-1 STEM OPT Extension