CPT vs OPT: Complete Guide for F-1 Students (2026)

TL;DR

• CPT (Curricular Practical Training) is work authorization tied to your enrolled curriculum, approved by your DSO with no USCIS filing. OPT (Optional Practical Training) is post-graduation work authorization approved by USCIS through Form I-765, taking 3 to 5 months to process.

• Accumulating 12 or more months of full-time CPT at the same degree level permanently eliminates your OPT eligibility at that level, with no exceptions. This is the single most consequential rule in F-1 employment law and the most frequently violated.

• Full-time CPT from a previous school at the same degree level counts toward the 12-month threshold. You are not starting fresh just because you transferred.

• Part-time CPT (fewer than 20 hours per week) does not count toward the 12-month OPT-elimination threshold, regardless of how long it runs.

• Pre-completion OPT time is deducted from your 12-month post-completion OPT. Using 3 months of pre-completion OPT leaves you 9 months of post-completion OPT authorization.

• STEM OPT gives eligible graduates 24 additional months of work authorization for a total of 36 months, covering two or three H-1B lottery attempts for most students.

• The 90-day post-completion OPT unemployment limit begins on your OPT start date, not when you find a job. The STEM OPT combined limit is 150 cumulative days, not 150 new days.

• Self-employment is permitted on standard OPT. It is not permitted on STEM OPT.

• The cap-gap extension automatically bridges OPT to H-1B status for selected lottery applicants, preserving work authorization through September 30 of the H-1B start year.

• As of December 12, 2025, USCIS no longer accepts self-submitted photos with Form I-765. A biometrics appointment is now scheduled by USCIS instead.

The Fundamental Distinction

CPT and OPT serve different purposes in the F-1 framework and operate under different legal authorities.

CPT is a component of your academic program. Under federal regulations, it is employment that is an integral part of an established curriculum, offered by sponsoring employers through cooperative agreements with the school. The work must be required by your curriculum or offered for academic credit. Your DSO approves CPT and records it on your I-20. No USCIS involvement, no EAD card.

OPT is a separate immigration benefit that allows F-1 students to work in positions related to their field of study. It exists alongside your academic program (pre-completion OPT) or after you complete it (post-completion OPT). OPT requires USCIS approval through Form I-765 and is evidenced by an EAD card with specific start and end dates. Your employment authorization begins on the date printed on the EAD, not when the card arrives.

The critical link between the two: the amount of full-time CPT you use during your academic program can permanently eliminate your post-completion OPT eligibility. Understanding this link is more important than any other single concept in F-1 employment.

Side-by-Side Comparison

CPT: What You Need to Know

The Curriculum Integral Requirement

CPT is not merely work authorization that happens while you are a student. It is work authorization that is an integral part of an established curriculum. This distinction has real consequences.

To qualify as CPT, the practical training must be required as part of your degree program or offered for academic credit, and it must be offered through a cooperative agreement between the employer and your school. Your DSO is responsible for verifying that a specific position meets this standard before authorizing CPT.

A position that is educationally related to your field of study but is not tied to a specific course, academic requirement, or cooperative agreement with your school should be OPT, not CPT. Using CPT for a position that does not meet the integral-to-curriculum requirement creates F-1 status compliance issues.

Employer and Period Specificity

Each CPT authorization covers a specific employer, a specific job role, and a specific period. It is recorded on your I-20 with the employer name and dates. If you want to change employers, take a break and return to the same employer, or modify your role, you need a new CPT authorization and a new I-20 from your DSO. CPT does not follow you if you change jobs.

The 12-Month Full-Time Rule: No Exceptions

Full-time CPT is defined as 20 or more hours per week. Any CPT authorization at 20 hours or more per week counts as full-time CPT for purposes of this rule.

If you accumulate 12 months or more of full-time CPT at the same educational level, your OPT eligibility at that level is permanently eliminated. There is no waiver, no appeal, no exception, and no way to restore it. You lose the entire 12-month post-completion OPT window and with it the STEM OPT extension that would otherwise be available.

This rule applies across institutions at the same degree level. Full-time CPT from a prior university at the same degree level counts toward your 12-month total. Transferring schools does not reset the clock.

Part-Time CPT Is Safe for OPT Preservation

Part-time CPT, defined as fewer than 20 hours per week, does not count toward the 12-month OPT-elimination threshold regardless of duration. A student who does 11 months of part-time CPT and then 11 months of full-time CPT has accumulated only 11 months of full-time CPT and retains OPT eligibility.

Day 1 CPT Programs

Some schools market CPT authorization from the first day of enrollment before any coursework has been completed. This category, commonly called Day 1 CPT, has attracted significant SEVP enforcement attention. Several schools offering Day 1 CPT programs have lost SEVP certification.

When a school loses SEVP certification, enrolled students lose their F-1 status simultaneously. If an employer later discovers that an employee's CPT was issued by a school that was not compliant with SEVP regulations, it creates employment eligibility complications. 

Students enrolled primarily to access Day 1 CPT rather than to complete a genuine academic program face particularly elevated risk.

Before enrolling in any program for CPT purposes, verify the school's current SEVP certification status, its academic accreditation from a recognized accrediting body, and consult with an immigration attorney independently of the school's own representations.

OPT: What You Need to Know

Pre-Completion vs Post-Completion OPT

• Post-completion OPT is what most students mean when they say OPT: the 12-month work authorization that begins after graduation.

• Pre-completion OPT authorizes work during your enrollment. It is full-time only during official school breaks; part-time (no more than 20 hours per week) while school is in session. Any time used for pre-completion OPT is deducted from your 12-month post-completion OPT allocation. 

Using 4 months of pre-completion OPT leaves 8 months of post-completion OPT. The 12-month total is shared across both types.

Most students should use CPT rather than pre-completion OPT during their enrollment to preserve the full post-completion OPT window, since CPT (at part-time levels) does not affect OPT eligibility.

The Filing Sequence

The OPT filing sequence involves two linked deadlines that both matter.

• First, obtain the OPT recommendation from your DSO. This requires requesting it in advance; most international offices take 1 to 3 weeks to process the recommendation and issue an updated I-20.

• Second, file Form I-765 with USCIS within 30 days of the date your DSO enters the OPT recommendation into your SEVIS record and issues the updated I-20. Filing more than 30 days after the I-20 issuance date results in automatic denial and loss of the filing fee.

• Third, the I-765 must be received by USCIS within the application window: no earlier than 90 days before your program end date and no later than 60 days after your program end date.

Both the 30-day and 90/60-day windows must be satisfied simultaneously. The recommended approach is to request your DSO recommendation at the 90-day-before-graduation mark, receive the I-20, and file within days.

As of December 12, 2025, USCIS no longer accepts self-submitted passport photos with Form I-765. After filing, USCIS will schedule a biometrics appointment at an Application Support Center. Factor this additional step into your planning.

Choosing Your OPT Start Date

You select your OPT start date on the I-765. For post-completion OPT, the start date must fall within 60 days after your program end date.

The 90-day unemployment clock begins on the start date you select, not on the date you find employment. A student who selects an aggressive early start date and then takes 6 weeks to find a job has already used 42 days of their 90-day limit before starting work.

Students without confirmed employment should select a later start date within the 60-day window to reduce unemployment exposure before the clock starts.

Employment Rules During Standard OPT

• All employment must be directly related to your major field of study. Unrelated work, even a small number of hours per week, is a status violation.

• Multiple employers simultaneously are permitted, as long as each is related to your field of study and your combined hours total at least 20 per week.

• Self-employment is permitted. You may operate your own company, work as a sole proprietor, or consult independently, as long as the work is related to your degree, you are the employer of record, and you report your employment to your DSO within 10 days.

• Unpaid internships and volunteer positions count as employment for OPT purposes, provided the work is field-related and the commitment is at least 20 hours per week.

• Every employer change must be reported to your DSO within 10 days via the SEVP Portal. Unreported periods appear as unemployment in your SEVIS record and count toward your 90-day limit regardless of whether you were actually working.

The 90-Day Unemployment Limit

The 90-day limit is cumulative across your full OPT period. You do not get 90 fresh days after each job. You have 90 days total. Days accumulate when you are not engaged in at least 20 hours per week of field-related work. Days between jobs, gaps between internships, periods of part-time work below 20 hours per week all count.

At 90 cumulative days, USCIS regulations provide for automatic SEVIS termination, which ends F-1 status. There is no advance warning and no formal notification before the termination occurs.

Track your unemployment days yourself, from day one, without relying on your DSO to alert you when you are approaching the limit.

STEM OPT Extension: The Key Details

Students who completed a qualifying STEM degree may apply for a 24-month extension of post-completion OPT, for a total of 36 months of authorized work. For most F-1 students from India, these 36 months cover two or three H-1B lottery cycles.

Employer Requirements

The STEM OPT employer must be enrolled in and maintain good standing with USCIS's E-Verify program. Verify E-Verify enrollment before filing your STEM extension. An employer that loses E-Verify good standing after your STEM OPT begins jeopardizes your authorization.

Form I-983 Training Plan

STEM OPT requires a formal training plan on Form I-983, completed jointly by you and your employer. The I-983 must describe specific learning objectives, training activities, and how the training relates to your qualifying STEM degree. It is signed by a supervisory employee with hiring authority. This document must be submitted to your DSO before the DSO can recommend the STEM extension in SEVIS.

The I-983 is not a formality. USCIS site visits during STEM OPT may verify that the training plan is being implemented as described. Material changes to the training plan require a new I-983.

Filing Window and the 180-Day Automatic Extension

The STEM OPT I-765 may be filed up to 90 days before your current OPT EAD expires and must be received by USCIS before the EAD expiration date. There is also the 60-day post-DSO-recommendation window that applies as with standard OPT.

If the I-765 is received by USCIS before the OPT EAD expires, your work authorization is automatically extended for up to 180 days while USCIS adjudicates the application. The USCIS receipt notice serves as documentation of this extended authorization.

If you miss the filing deadline and your OPT EAD expires without a pending STEM application, the 180-day automatic extension does not apply. You must stop working immediately.

Reporting During STEM OPT

Every six months, you must complete a self-evaluation of your training progress and submit it to your DSO. At the 12-month mark, a training progress report is required. At the 24-month mark, a final assessment is required. The employer must also report your departure within five business days if you leave employment.

All employer changes must be reported to your DSO within 10 days.

Self-Employment Is Not Available on STEM OPT

Unlike standard OPT, STEM OPT requires a formal employer-employee relationship with the specific E-Verify enrolled employer listed on the I-983. You cannot be self-employed, operate as an independent contractor for multiple companies, or work for an employer other than the one named on your I-983 without obtaining a new STEM OPT authorization for the new employer.

The Unemployment Limit During STEM OPT

The 150-day cumulative limit is the total across both your standard OPT and your STEM OPT combined, not 150 additional days on top of the standard OPT's 90.

If you used 30 days of unemployment during standard OPT, you have 120 days remaining for the 24-month STEM period. If you used all 90 days during standard OPT, you have only 60 days remaining for STEM OPT. Reaching 90 cumulative days during standard OPT also makes you ineligible for the STEM extension altogether.

The H-1B Bridge: How OPT and STEM OPT Connect to Long-Term Status

The FY2027 H-1B lottery (registration window March 2026) is the first to use a wage-weighted selection system. For F-1 students entering the lottery for the first time, the practical implication is that the wage level of the offered position now affects selection odds, and employers offering higher-wage positions have a structural advantage.

Most STEM graduates who intend to pursue H-1B visa will use their OPT period as follows: 12-month OPT with one lottery attempt, then STEM OPT extension for two more lottery attempts, covering fiscal years 2027, 2028, and 2029 for a student graduating in spring 2026.

The Cap-Gap Extension

For students whose OPT overlaps with the H-1B start date of October 1, a cap-gap provision automatically extends F-1 status and, in most cases, OPT work authorization through September 30 of the H-1B year, or through October 1 when the H-1B begins.

Cap-gap applies only if: the employer filed the H-1B petition with a change-of-status request (not consular processing), the petition was selected and filed before the OPT EAD expired, and the I-797 receipt number has been added to the student's SEVIS record. 

If the H-1B petition is denied, revoked, or withdrawn, the cap-gap benefit ends immediately and the student enters the 60-day grace period.

Students should not travel internationally during a cap-gap extension period. Departing the United States terminates the cap-gap protection.

Common Mistakes and Their Consequences

Frequently Asked Questions

Can I use both CPT and OPT at the same time?

No. USCIS regulations do not permit concurrent CPT and OPT authorization. You use one or the other at any given time.

Does part-time CPT ever count against my OPT?

Part-time CPT (fewer than 20 hours per week) does not count toward the 12-month OPT-elimination threshold. It does not reduce your 12-month post-completion OPT allocation. It is the one CPT category that has no negative effect on future OPT eligibility.

Can I change jobs during OPT?

Yes, as many times as you want. Each change must be reported to your DSO within 10 days. All employers must be in your field of study. Gaps between jobs count toward your unemployment total.

What happens if my STEM OPT employer loses E-Verify good standing?

Your STEM OPT authorization is tied to the employer's E-Verify status. If the employer loses good standing, you must find a new qualifying employer or your STEM OPT may be affected. Report any change to your DSO promptly.

Can I do freelance or consulting work on OPT?

Yes on standard OPT, where self-employment is permitted. Not on STEM OPT, which requires a formal employer-employee relationship with a specific E-Verify enrolled company. On standard OPT, you must report your self-employment to your DSO within 10 days and the work must be in your field of study.

Is my OPT EAD employer-specific?

No. Standard OPT EAD is not tied to a specific employer. You can work for any employer or multiple employers as long as the work is related to your field of study. STEM OPT is effectively employer-specific because the I-983 Training Plan names a specific employer, and a new I-983 is required for each employer change.

This article is intended for general informational purposes only and does not constitute legal advice. CPT and OPT rules, USCIS processing times, and related requirements change frequently. Always verify current requirements at uscis.gov and consult your school's international student office before filing. For guidance specific to your situation, consult a licensed immigration attorney.