If you are an international student on an F-1 visa, two programs allow you to gain work experience in the United States directly related to your field of study: Optional Practical Training (OPT) and Curricular Practical Training (CPT). Understanding how each works, when to apply, and how to avoid common mistakes is essential — errors can result in a loss of F-1 status and forced departure from the US.
Last updated: July 20, 2026.
This guide covers OPT and CPT in detail: eligibility, application timelines, the 90-day unemployment rule, STEM OPT extension, cap-gap protection, and the critical link between OPT and the H-1B lottery.
- What Is OPT?
- OPT Duration and STEM Extension
- OPT Application Timeline
- The 90-Day Unemployment Rule
- What Is CPT?
- OPT vs. CPT: Key Differences
- OPT and the H-1B: The Critical Connection
- How to Apply for OPT: Step by Step
- Reporting Requirements During OPT
- Common OPT Mistakes to Avoid
- OPT/CPT Frequently Asked Questions
- Bottom Line: OPT and CPT in 2026
What Is OPT?
Optional Practical Training is a period of temporary employment authorization that allows F-1 students to work in the US in a position directly related to their major area of study. OPT is authorized by USCIS and administered through your school’s Designated School Official (DSO).
There are two types of OPT:
- Pre-completion OPT: Used before you complete your degree. Part-time during the academic year (20 hours/week max), full-time during official breaks.
- Post-completion OPT: Used after graduation. Full-time (40 hours/week), up to 12 months. This is the most commonly used form of OPT.
OPT Duration and STEM Extension
Standard post-completion OPT provides 12 months of work authorization. If you graduated with a qualifying STEM degree (science, technology, engineering, or mathematics), you can apply for a 24-month STEM OPT extension — bringing your total OPT to 36 months.
The STEM OPT extension requires:
- A qualifying STEM degree on the DHS STEM Designated Degree Program List
- Employment at an E-Verify enrolled employer
- A formal training plan (Form I-983) signed by your employer
- A DSO recommendation
- Filing Form I-765 with USCIS at least 90 days before your standard OPT expires
OPT Application Timeline
The OPT application process takes time — USCIS processing can run 3–5 months. Plan ahead:
| Milestone | Timing |
|---|---|
| Earliest you can apply | 90 days before graduation |
| Latest you can apply | 60 days after graduation |
| OPT start date you request | Within 60 days of graduation |
| OPT end date | 12 months after OPT start date |
| STEM OPT extension application | Up to 90 days before OPT expires |
| Cap-gap protection begins | October 1 (if H-1B filed by April 1) |
The 90-Day Unemployment Rule
One of the most misunderstood OPT rules is the 90-day unemployment limit. During your 12-month OPT period, you may only be unemployed (or working in an unrelated field) for a total of 90 days. Exceeding this limit causes an automatic violation of your F-1 status.
During STEM OPT, the unemployment limit drops to 60 additional days (150 days total across the full 36-month period). Key points:
- The clock starts on your OPT start date, not when you find a job.
- Part-time work (20+ hours per week) in your field counts as employed.
- Self-employment may count if properly documented.
- Unpaid internships may count if they qualify under FLSA exemptions.
- Multiple part-time jobs can be combined to reach full-time equivalency.
What Is CPT?
Curricular Practical Training is work authorization for F-1 students that is integrated into their academic curriculum. Unlike OPT, CPT is authorized by your DSO — not USCIS — and appears on your I-20 form. CPT can be used before graduation only.
CPT requires that the employment is:
- An integral part of your established curriculum, OR
- Required for your degree (e.g., a required internship credit)
Full-Time vs. Part-Time CPT
- Part-time CPT: 20 hours/week or less. No impact on OPT eligibility regardless of duration.
- Full-time CPT: More than 20 hours/week. If used for 12 months or more, you lose eligibility for OPT entirely. Use full-time CPT carefully.
OPT vs. CPT: Key Differences
| Feature | OPT | CPT |
|---|---|---|
| Who authorizes it | USCIS | DSO (your school) |
| When it can be used | Pre or post-completion | Pre-completion only |
| Application cost | $470 (I-765 filing fee, online) / $520 (paper) | No USCIS fee |
| Processing time | 3–5 months | Days (school process) |
| 12-month clock | Yes — 12 months total per degree level | No USCIS clock, but full-time CPT eats OPT |
| E-Verify required | Only for STEM OPT extension | No |
| Employer flexibility | Can change employers | Tied to specific employer on I-20 |
OPT and the H-1B: The Critical Connection
Most F-1 students on OPT or STEM OPT are working toward H-1B sponsorship as their long-term path to staying in the US. Here is how the two programs interact:
Cap-Gap Protection
If your OPT expires between April 1 and September 30, and your employer filed an H-1B petition for you by April 1, you are protected by the cap-gap rule. This automatically extends your OPT work authorization until September 30 — the day before your H-1B begins.
During the cap-gap period, you can continue working full-time for the same employer. Your DSO will update your I-20 to reflect the cap-gap extension.
You do not need to apply for anything separately — it is automatic once the H-1B petition is filed.
STEM OPT Gives You More H-1B Attempts
The 36-month total of STEM OPT means that a student who was not selected in their first H-1B lottery can continue working legally in the US and try again. Here is a typical timeline:
- Year 1 (12-month OPT): Graduate in May 2024, OPT starts June 2024. Enter H-1B lottery March 2025 for FY 2026. If not selected, STEM OPT extension filed before June 2025.
- Years 2–3 (STEM OPT): STEM OPT covers June 2025 – June 2027. Enter H-1B lottery again March 2026 (FY 2027) and if needed March 2027 (FY 2028).
- Three lottery attempts possible within STEM OPT alone for most graduates.
How to Apply for OPT: Step by Step
Step 1: Meet with Your DSO
Contact your school’s International Student Office (ISO) at least 90 days before your planned OPT start date. Your DSO must enter an OPT recommendation in SEVIS before you can apply.
Step 2: Get Your OPT Recommended I-20
Your DSO updates your I-20 to reflect the OPT recommendation. You will need this new I-20 as part of your USCIS application.
Step 3: File Form I-765 with USCIS
File Form I-765 (Application for Employment Authorization) with the following:
- Two passport-style photos
- Copy of your current I-20 (OPT recommended)
- Copy of your F-1 visa
- Copy of your passport biographical page
- Copy of all previous I-20s
- Copy of any prior EAD cards
- $470 filing fee (online) or $520 (paper)
Online filing through the myUSCIS account portal is available for all three F-1 OPT categories and is now the faster, cheaper option — online (c)(3)(B) post-completion filings are typically processed in about 2-3 months, versus 3-5 months for paper filed by mail to the appropriate USCIS lockbox. See the current Form I-765 instructions and fee schedule on USCIS.gov before filing, since fees are adjusted periodically.
Step 4: Receive Your EAD Card
USCIS will mail your Employment Authorization Document (EAD) to your US address. Do not start working until you have received the EAD and your start date has arrived. Your EAD card is the document that authorizes employment — not just the approval notice.
Reporting Requirements During OPT
F-1 students on OPT have ongoing reporting obligations through the SEVP Portal. Failure to report can result in a SEVIS termination:
- Report employer changes within 10 days of any change in employment (new employer, end of employment, change of address).
- Report address changes within 10 days.
- During STEM OPT: Complete a self-evaluation and employer validation every 6 months via the SEVP Portal and Form I-983.
- If unemployed: Report it immediately. The 90-day clock is running — staying on top of reporting protects you.
Common OPT Mistakes to Avoid
- Applying too late: USCIS processing can take 3–5 months. Apply 90 days before graduation.
- Working before the EAD arrives: Even if approved, do not work until you physically have the card and the start date has passed.
- Exceeding 90 days of unemployment: Start counting on day 1 of your OPT, not when you find a job.
- Taking unrelated work: All employment must be related to your field of study. An engineer working as a barista to pay rent is a status violation.
- Not reporting employer changes: Every employment change must be reported within 10 days via the SEVP Portal.
- Using full-time CPT for 12+ months: This eliminates your OPT eligibility entirely. Track your CPT hours carefully.
- Forgetting to apply for STEM OPT early enough: You need 90 days of lead time. Missing this window means a gap in work authorization.
OPT/CPT Frequently Asked Questions
Can I travel outside the US on OPT?
Yes, but carefully. To re-enter the US while on OPT, you need: a valid F-1 visa (or the ability to get one at a consulate), your valid passport, your EAD card, a job offer letter or evidence of employment, and a DSO travel signature on your I-20 (dated within 6 months). Travel during a gap in employment can be risky — consult your DSO before traveling.
Can I do OPT for a master’s degree if I already did OPT for my bachelor’s?
Yes. OPT is available for each higher degree level. If you used 12 months of OPT during your bachelor’s degree and then earned a master’s, you get another 12-month OPT period (plus STEM extension if eligible) for the master’s degree.
Can I start a company on OPT?
Self-employment is allowed on OPT as long as the work is in your field of study and you are the employer of record. Your DSO must report your self-employment in SEVIS. The work must meet the field-relatedness test — you cannot list a company doing unrelated work and claim OPT compliance.
What happens to my OPT if my H-1B is denied?
If your H-1B petition is denied after a cap-gap extension began, your cap-gap protection ends and you must stop working. If you still have remaining OPT time, you may continue working until the OPT expires. If OPT was also expiring, you have a 60-day grace period to leave the US or change status.
Does OPT count toward the H-1B 6-year maximum?
No. Time spent on OPT does not count against the H-1B 6-year clock. Your H-1B 6-year period starts when your H-1B status begins (October 1 of the cap year).
Bottom Line: OPT and CPT in 2026
OPT and CPT are powerful tools for international students — but only if used correctly. The most important things to remember:
- Apply for OPT at least 90 days before you need it.
- Never work a day over the 90-day unemployment limit.
- Pursue STEM OPT if you qualify — it gives you three H-1B lottery shots.
- Report every employer change within 10 days.
- Treat CPT full-time usage carefully — 12+ months eliminates OPT.
- Use the cap-gap protection to bridge OPT to H-1B without a work gap.
For your next step, read our complete H-1B Lottery 2026 guide to understand what happens after OPT and how to prepare for the lottery.
