Curricular Practical Training is work authorization for F-1 students whose job is a required or credit-bearing part of their degree program. The rules and requirements for curricular practical training come from 8 CFR 214.2(f)(10)(i): you must be in valid F-1 status, the position must be directly related to your major and integral to your school’s established curriculum, and your Designated School Official must authorize the specific employer and dates on your Form I-20 before you begin work.1eCFR. 8 CFR 214.2 – Special Requirements for Admission, Extension, and Maintenance of Status
Who Qualifies for CPT
You need to hold valid F-1 status for the entire period of CPT employment. The position must be directly related to your major field of study, and it must qualify as an integral part of your school’s established curriculum.2Study in the States. F-1 Curricular Practical Training (CPT) In practice that means either the work experience is required for graduation, or you’re enrolled in a specific internship or practicum course that awards degree credit.
Most students must complete one full academic year of full-time enrollment before using CPT. The one exception: graduate students whose programs require practical training from the very first semester can skip the waiting period.1eCFR. 8 CFR 214.2 – Special Requirements for Admission, Extension, and Maintenance of Status
You also have to maintain a full course of study while CPT is authorized during the regular academic year.2Study in the States. F-1 Curricular Practical Training (CPT) Summer enrollment rules are lighter. If it isn’t your final semester, you usually only need to register for the internship or practicum course itself.
Part-Time and Full-Time CPT
CPT is classified by weekly hours. Part-time is 20 hours or fewer per week; full-time is more than 20 hours per week.2Study in the States. F-1 Curricular Practical Training (CPT) The classification gets locked into your I-20 when your DSO processes the request, so confirm the weekly hours with your employer before authorization is issued.
The distinction matters because of what full-time CPT does to your future work options. If you accumulate one year or more of full-time CPT, you become permanently ineligible for post-completion OPT at that same degree level.1eCFR. 8 CFR 214.2 – Special Requirements for Admission, Extension, and Maintenance of Status STEM OPT builds on standard OPT, so losing OPT eligibility takes STEM OPT with it. For a STEM student, that can mean losing up to 36 months of post-graduation work authorization.
Part-time CPT does not count toward this cap at all.3U.S. Immigration and Customs Enforcement. Practical Training You could use part-time CPT every semester of your program and still qualify for the full 12 months of OPT. Track your cumulative full-time CPT days across semesters and stay under 12 months if you want to preserve OPT. Each degree level resets the clock, so 11 months of full-time CPT during a bachelor’s does not carry into a subsequent master’s program.4U.S. Citizenship and Immigration Services. USCIS Policy Manual – Practical Training
What You Submit and How Authorization Works
The central document is a job offer letter on the employer’s letterhead. It needs the employer’s full legal name, the physical work address, the start and end dates, weekly hours, and a description of your duties. A vague or incomplete letter is the most common reason applications stall.
Before your school will process the request, you also have to be registered for the designated internship or practicum course. The course must appear in the school’s catalog and award credit toward your degree. Your international student office will provide an internal request form asking you to explain how the job duties connect to your field of study. Have the course number, the offer letter, and that written explanation ready before you start the application.
Once you submit, your DSO reviews the offer letter and course registration against federal rules. If approved, the DSO updates your record in SEVIS and issues a new Form I-20 with a CPT endorsement on page two listing your specific employer, work location, and authorized dates.5U.S. Citizenship and Immigration Services. Reminder: F-1 Students Enrolled in CPT Must Use Redesigned Form I-20 Processing times vary but commonly run five to ten business days.
You cannot begin work until you physically have the endorsed I-20 and the authorized start date has arrived. Starting even one day early counts as unauthorized employment. Bring the endorsed I-20 to your first day so your employer can complete Form I-9 without delays; for CPT, your passport, Form I-94 showing F-1 status, and the endorsed I-20 together satisfy List A.6U.S. Citizenship and Immigration Services. 7.4.2 F-1 and M-1 Nonimmigrant Students
Unpaid Internships Are Not Exempt
Assuming that unpaid positions don’t need work authorization is a costly mistake. The regulation defines CPT to include any required internship or practicum offered through cooperative agreements with the school, without distinguishing between paid and unpaid work.1eCFR. 8 CFR 214.2 – Special Requirements for Admission, Extension, and Maintenance of Status The USCIS policy manual’s allowance for volunteer or unpaid work applies to post-completion OPT, not CPT.4U.S. Citizenship and Immigration Services. USCIS Policy Manual – Practical Training
If the internship relates to your major and involves structured work for an employer, get CPT authorization whether or not you’re being paid.
Changing Employers or Adding a Second Position
Each CPT authorization is tied to one specific employer and one specific time period.2Study in the States. F-1 Curricular Practical Training (CPT) Switching to a different company means going through the entire process again: new offer letter, new course registration or advisor confirmation, and a new I-20 endorsement. You cannot show up at a different employer on your existing I-20.
You can hold CPT authorization for more than one employer at the same time, but each position needs its own separate authorization and endorsement.2Study in the States. F-1 Curricular Practical Training (CPT) Combined hours across all positions determine whether you’re classified as full-time, which feeds back into the OPT cap. If a job ends earlier than your I-20 shows or any detail changes, tell your international student office right away so the SEVIS record stays accurate.
Social Security Number, Taxes, and Travel
If you don’t already have a Social Security Number, you’ll need one before payroll can start. F-1 students on CPT can apply at a Social Security Administration office with the endorsed I-20, a valid passport, and Form I-94.7Social Security Administration. International Students and Social Security Numbers No EAD is required for CPT; the endorsed I-20 is your proof of authorization. You can apply up to 30 days before your CPT start date, and processing itself commonly takes two to four weeks after you apply.
On taxes, F-1 students in the U.S. for fewer than five calendar years are generally nonresident aliens for tax purposes and are exempt from Social Security and Medicare taxes on practical training wages.8Internal Revenue Service. Foreign Student Liability for Social Security and Medicare Taxes Your paychecks should not show FICA deductions during that period. If they do, point payroll to the IRS guidance on nonresident alien student exemptions. Federal and possibly state income taxes still apply regardless of residency classification.
You can travel internationally while CPT is active. Re-entry requires a valid passport (six months of remaining validity), a valid F-1 visa stamp (Canadian citizens exempt), and an endorsed I-20 with a travel signature from your DSO that is less than 12 months old. Request the signature well before your trip; processing commonly takes about a week. Your CPT dates don’t pause while you’re abroad, so a delayed return can cost you authorized work time you can’t recover.
What Unauthorized Work Costs You
Working without valid CPT authorization is a violation of F-1 status. That includes starting before your endorsed date, working past the end date, working for an employer not listed on your I-20, or skipping the authorization process entirely.
An F-1 student who engages in unauthorized employment can be placed in removal proceedings, lose eligibility for future immigration benefits, and face difficulty obtaining visas later. Your DSO is required to terminate your SEVIS record on becoming aware of a status violation, which ends your ability to remain in the country as a student. There is no grace period and no informal correction process. The only protection is to never begin work until you physically have the endorsed I-20 and the authorized start date has arrived.