Understanding the difference between OPT and CPT is crucial for F-1 international students planning to gain work experience in the U.S. Both offer valuable opportunities, but serve different purposes, timelines, and rules.
Gaining real-world work experience is a major reason why many international students choose to study in the United States. The U.S. immigration system offers options that allow F-1 students to work legally while studying or after graduation — but choosing the right one can be tricky.
OPT (Optional Practical Training) and CPT (Curricular Practical Training) are two of the most widely used work authorizations. Although they’re both connected to your student visa, the way they function, their timing, and the requirements are very different.
What is OPT (Optional Practical Training)?
Optional Practical Training (OPT) is a temporary work authorization granted to F-1 international students, allowing them to gain hands-on experience in their field of study. OPT is especially popular among recent graduates who want to work in the U.S. after completing their degree.
There are two types of OPT: Pre-completion OPT (used while still studying) and Post-completion OPT (used after graduation). Most students choose Post-completion OPT to begin full-time work after completing their program.
Here’s a full breakdown of how OPT works:
Eligibility
- Must be in valid F-1 status
- Must have completed at least one full academic year
- Work must be directly related to your major field of study
Duration
- Up to 12 months of OPT per degree level (Bachelor’s, Master’s, etc.)
- STEM OPT extension: Additional 24 months for students in STEM-designated fields
Pre-completion vs Post-completion
- Pre-completion OPT:
- Part-time (≤20 hours/week) while school is in session
- Full-time during official school breaks
- Part-time (≤20 hours/week) while school is in session
- Post-completion OPT:
- Full-time (40 hours/week) allowed
- Must begin within 60 days after program end date
- Full-time (40 hours/week) allowed
Application Process
- Must apply through USCIS (U.S. Citizenship and Immigration Services)
- Requires Form I-765 and OPT recommendation from your Designated School Official (DSO)
- Processing time: 1 to 3 months, so apply early
Job Offer Requirements
- No job offer is required to apply
- However, once OPT starts, you must not be unemployed for more than 90 days
- All employment must be directly related to your field of study
Other Key Points
- You will receive an Employment Authorization Document (EAD)
- You can work for multiple employers, as long as all jobs relate to your field
- You cannot travel outside the U.S. once your OPT is approved and your EAD is issued unless you have a job offer letter in hand
While OPT is often associated with post-graduation work, many international students also explore employment opportunities during their academic program. That’s where CPT comes in — another work authorization type tied to the F-1 visa.
CPT is designed to give students hands-on training as part of their academic curriculum. Whether it’s a required internship or an optional practical course, CPT enables you to work legally in the U.S. while you’re still enrolled in school.
What is CPT (Curricular Practical Training)?
Curricular Practical Training (CPT) allows F-1 students to participate in off-campus internships, practicums, or cooperative education programs that are integral to their academic program. Unlike OPT, CPT must be tied to your coursework and requires a job offer before you apply.
Here’s how CPT works in detail:
Eligibility
- Must be in valid F-1 status
- Must have completed at least one full academic year
- Exception: Graduate programs that require immediate practical training
- Exception: Graduate programs that require immediate practical training
- The employment must be an essential part of your curriculum
Timing and Duration
- Can be used only during your program (before graduation)
- Can be part-time (≤20 hours/week) or full-time (>20 hours/week)
- No overall limit, but using 12+ months of full-time CPT removes your eligibility for OPT at that same degree level
Application Process
- No USCIS filing required
- Apply through your school’s Designated School Official (DSO)
- You’ll receive a new I-20 form with CPT authorization details
- Must have a job offer in hand before applying
Job Offer Requirements
- Job offer is mandatory before CPT approval
- The job must be directly related to your field of study
- Often tied to a credit-bearing course or department approval
Other Key Points
- You do not get an EAD card; CPT is approved via an updated I-20
- You must not begin work until CPT is approved
- Multiple CPT approvals are possible if allowed by your academic program
- Travel is permitted while on CPT, as long as you’re enrolled and in status
When deciding between OPT and CPT, understanding their differences can help you choose the right path based on your goals and academic timeline. While both allow you to gain valuable U.S. work experience, they differ in timing, application process, and requirements.
The table below breaks down the most important distinctions between the two:
OPT vs CPT: Key Differences
Feature | OPT (Optional Practical Training) | CPT (Curricular Practical Training) |
Purpose | Post-study work experience | Internship/training required as part of curriculum |
When You Can Use It | Before or after graduation | Only while enrolled in a degree program |
Requires Job Offer? | ❌ No job offer needed to apply | ✅ Yes, a job offer is required before applying |
Approval Authority | USCIS (federal government) | School DSO (Designated School Official) |
Processing Time | 1–3 months (USCIS approval required) | Typically 1–2 weeks (handled by school) |
Employment Authorization Type | EAD (Employment Authorization Document) | CPT notation on your I-20 |
Work Hours Allowed | Full-time (post-completion) or part-time (pre-completion) | Part-time or full-time (based on approval) |
Affects OPT Eligibility? | ❌ No impact | ⚠️ Yes — full-time CPT for 12+ months makes you ineligible for OPT |
Can Be Used After Graduation? | ✅ Yes | ❌ No — CPT ends before or at graduation |
STEM OPT Extension Available? | ✅ Yes, 24-month extension possible for STEM majors | ❌ No |
With both OPT and CPT offering valuable work opportunities, the right choice depends on when you plan to work and why. Your academic schedule, the type of job you’re offered, and your long-term career goals all play a role.
Choosing the wrong option—or using one incorrectly—can affect your future visa eligibility or delay your career plans. Here’s how to decide which one works best for your situation:
When to Use OPT or CPT
Use CPT if:
- You’re offered an internship or practicum that’s part of your course curriculum
- Your degree program requires work experience to graduate
- You’re still enrolled in classes and the job aligns with your academic goals
- You have a job offer in hand and need quick work authorization
- You’re taking a course that awards credit for the internship
Use OPT if:
- You’re graduating soon and want to work full-time in your field after your degree
- You don’t have a job offer yet but want to be ready once one comes
- You want flexibility to work for any employer (related to your major
- You’re in a STEM field and may apply for the 24-month OPT extension
- You’ve already used CPT but want extended work authorization post-graduation
This decision is not just about opportunity—it’s also about timing, compliance, and future immigration steps like H-1B or green card pathways. Always plan ahead.
While OPT and CPT can greatly enhance your education and career, missteps in using them can lead to serious visa consequences. U.S. immigration rules are strict, and even a small mistake—like working before authorization—can put your F-1 status at risk.
To avoid unnecessary issues and make the most of your time in the U.S., it’s important to stay informed, organized, and always follow official procedures. Here are some key rules and best practices:
Important Rules and Tips for International Students
1. Never Work Without Authorization
- Whether it’s OPT or CPT, you must be authorized before starting any job. Unauthorized work can lead to immediate termination of your F-1 status.
2. Always Consult Your DSO
- Your Designated School Official (DSO) is your go-to for understanding work eligibility, application timelines, and maintaining status.
3. Track Your Unemployment Days (OPT)
- During OPT, you are allowed a maximum of 90 days of unemployment. Exceeding this can lead to status violation and termination in SEVIS.
4. Full-Time CPT for 12+ Months Affects OPT
- If you use 12 or more months of full-time CPT, you lose eligibility for OPT at that degree level. This rule does not apply to part-time CPT.
5. Keep Detailed Records
- Save job offer letters, I-20s, pay stubs, and EAD cards. These documents can help in visa interviews, immigration filings, or future H-1B applications.
6. Plan Ahead for USCIS Delays
- OPT applications can take up to 90 days to process. Apply early to avoid gaps between graduation and job start dates.
7. Use the STEM Extension Wisely
- If you’re eligible, the 24-month STEM OPT extension gives you a significant advantage. Ensure your employer is E-Verify registered and the job meets STEM criteria.
Choosing between OPT and CPT can shape your academic and professional journey in the U.S. Both options offer international students a chance to build real-world skills, but they serve different purposes and operate under different rules.
The key is to plan early, stay compliant, and make decisions based on your timeline and career goals. Whether you’re still in school or preparing to graduate, understanding the difference between OPT and CPT puts you one step closer to success.