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CPT vs. OPT: What's the Difference and When to Use Each?

CPT vs. OPT: What's the Difference and When to Use Each explains work authorization, eligibility, internships, and post-graduation employment options.

7 mins read

Posted: 2026-07-29

CPT vs. OPT: What's the Difference and When to Use Each?
Work & Internships

CPT vs. OPT: What's the Difference and When to Use Each

Quick answer: CPT (Curricular Practical Training) is work authorization used during your studies, tied directly to a course requirement; OPT (Optional Practical Training) is used after graduation (or before, in limited cases) and isn't tied to a specific course, most students use CPT for internships and OPT for post-graduation employment.

You don't have to figure this out alone, the team at Studentbuddy is here to support you every step of the way.

Both are forms of authorized F-1 work authorization, but they serve different purposes and have different rules, understanding both before you need either helps you plan your internship and job search strategy.

CPT: work authorization tied to your curriculum

CPT requires the work to be an integral, required part of your curriculum (an internship course, a co-op requirement) and must be authorized by your school before you start working, not after. It's typically used for internships during your degree.

OPT: broader post-graduation work authorization

OPT provides 12 months of work authorization generally used after graduation (with a STEM extension available for eligible degrees, extending it to 36 months total). Unlike CPT, it isn't tied to a specific course requirement.

Can you use both?

Yes, many students use CPT for internships during their studies and save their fullOPTallocation for after graduation. Be aware that extensive full-time CPT use (12+ months) can affect yourOPTeligibility, so check this rule with your international office before committing to a long CPT placement.

Key planning takeaway

Always apply for CPT authorization before starting any internship, working without proper authorization, even briefly, is a serious status violation with real consequences.

Get help understanding your specific work authorization options.

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FAQs

Can I start an internship before my CPT is approved?

No, working before CPT authorization is approved is a serious status violation, even if the internship offer is legitimate.

Does using CPT reduce my OPT time?

Not for part-time CPT, but 12 or more months of full-time CPT use can eliminate your OPT eligibility entirely, check this threshold carefully.

Can I use OPT before graduation?

In limited cases, yes, this is called pre-completion OPT, though most students use their full 12-month allocation after graduation instead.

Who authorizes CPT and OPT?

Your school's international student office authorizes both, based on your specific program requirements and eligibility.

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