US Immigration Form
Form I-20 — Certificate of Eligibility for F-1 Student Status
Form I-20 is not a form you fill out and mail to USCIS. It is a certificate issued by your Designated School Official — a staff member at your US educational institution who is authorized by the Student and Exchange Visitor Program to manage international student records. The I-20 certifies that you have been admitted to a full-time program of study, that you have demonstrated sufficient financial resources, and that the school has reported your enrollment in the SEVIS database.
Every F-1 student receives an I-20 before applying for a visa at a US consulate. The document is also what you present to the Customs and Border Protection officer when you enter the United States. Once enrolled, your DSO updates your I-20 whenever your program end date changes, when you apply for OPT, when you transfer schools, or when you travel and need a signature for re-entry.
This guide explains what Form I-20 is, who issues it, what information it contains, and how it governs your status as an F-1 student.
Who files this form
Form I-20 is not filed by the student. It is issued by the school's Designated School Official after the student has been admitted to a SEVP-certified institution and has demonstrated the ability to pay tuition and living expenses. The student then uses the I-20 to apply for an F-1 visa at a US consulate and to enter the United States.
After enrollment, the DSO is responsible for maintaining the accuracy of the I-20. Any change to your program, your funding, or your personal information must be reported to the DSO, who updates SEVIS and issues a new I-20 if necessary. You do not file anything with USCIS to update your I-20 — the DSO does this through the SEVIS system.
What this form is for
The purpose of Form I-20 is to certify that a nonimmigrant student has been admitted to a full-time academic or vocational program at a SEVP-certified school and has the financial means to complete that program. The document serves as the foundation for the student's F-1 visa application, entry into the United States, and maintenance of lawful status throughout their studies.
The I-20 also governs specific permissions and restrictions. The program start and end dates on the I-20 define the boundaries of your authorized stay. The I-20 must be endorsed by your DSO before you travel outside the United States and seek re-entry. And the OPT recommendation printed on page 2 of the I-20 is what authorizes you to file Form I-765 for work authorization after graduation.
Key sections
- Page 1 — Student information: name, date of birth, country of citizenship, and SEVIS ID number
- Page 1 — School information: name, address, and SEVP certification number
- Page 1 — Program of study: degree level, major field, program start and end dates
- Page 1 — Financial certification: estimated costs and funding sources
- Page 2 — Employment authorization: DSO recommendation for OPT or CPT
- Page 3 — Travel signature: DSO endorsement for re-entry after international travel
Common mistakes
- Letting the I-20 program end date pass without requesting an extension from the DSO
- Traveling without a valid DSO signature on page 3 — the signature is valid for 12 months for enrolled students, but only 6 months once you are on post-completion OPT
- Assuming the I-20 expiration date is the same as the visa expiration date — they are independent
- Failing to report a change of major or program level to the DSO promptly
- Not understanding that the I-20 OPT recommendation must be dated within 30 days of filing Form I-765
- Losing the original I-20 and not requesting a replacement from the DSO before travel
Official sources
Always verify the current form edition, fee, and instructions on the government site before filing. This guide is educational and not a substitute for your DSO or a licensed attorney.
Procedural deep-dives
For filing strategy, timing, and evidence standards, use these legal owners.
- US student visas hub
F-1, CPT, OPT, and STEM OPT procedural guides that use these forms.
- OPT & STEM OPT complete guide
How I-765 and I-983 fit the post-completion work path.
- I-765 OPT common mistakes
Category codes, timing, and evidence that trigger rejections.
- F-1 document checklist 2026
Evidence pack around I-20, DS-160, and the consular interview.
- STEM OPT self-employment and startup
When Form I-983 and E-Verify rules constrain founder roles.
- SEVIS termination and reinstatement
What happens when status records break after form mistakes.
Related guides
Frequently asked questions
- How long is my I-20 valid?
- Your I-20 is valid for the duration of your academic program, plus any authorized grace periods. The program end date is printed on page 1. If you need more time, you must request an extension from your DSO before the current end date passes.
- Can I travel with an expired I-20?
- No. You need a valid I-20 with a recent travel signature from your DSO to re-enter the United States. The travel signature on page 3 is valid for 12 months (6 months if you are on post-completion OPT). If it has expired, request a new signature from your DSO before you leave.
- What if I lose my I-20?
- Contact your DSO immediately. The DSO can issue a replacement I-20 from SEVIS. If you are outside the United States, the school may need to mail the replacement to you, which can take time. Plan ahead.
- Does my I-20 need to match my visa?
- Your I-20 and your F-1 visa do not need to have the same expiration date. The visa is for entry; the I-20 governs your status while you are in the United States. You can have valid status with an expired visa, but you will need a new visa to re-enter after international travel.
- Can I work with just my I-20?
- No. The I-20 itself does not authorize employment. For on-campus work, your DSO must authorize the position in SEVIS. For off-campus work such as OPT or CPT, your DSO must endorse your I-20, and you must file Form I-765 and receive an EAD before you begin working.