How to Apply for a Social Security Number (SSN) as an F-1 Student

What an SSN is and why F-1 students need one

A Social Security Number (SSN) is a nine-digit number issued by the US Social Security Administration (SSA). It exists mainly to track earnings and report wages to the government, so employers and the IRS use it whenever you are paid for work in the United States.

As an F-1 student, you do not need an SSN simply to study, open most bank accounts, or live in the US. You need one once you have authorized employment — an on-campus job, Curricular Practical Training (CPT), or Optional Practical Training (OPT) — because your employer must report your wages under an SSN.

An SSN is not a work permit and is not immigration status. Having one does not by itself authorize you to work; the authorization comes from your F-1 status and any employment approval. Treat your SSN as confidential and never share it casually.

• An SSN identifies your earnings for tax and payroll — it is not proof of the right to work
• F-1 students generally apply only after they have secured authorized employment
• One number for life; you keep the same SSN even if you change schools or jobs

The work-authorization prerequisite

The single most important rule: the SSA will generally issue an SSN to an F-1 student only if you can show you are authorized to work. USCIS states that F and M students who receive employment authorization need an SSN, and that in general only noncitizens with permission to work can apply for one.

The most common path is an on-campus job. In that case you typically need a job-offer letter from the employer plus a work-authorization letter from your Designated School Official (DSO) confirming the on-campus employment. If your work comes from CPT, your Form I-20 must show the CPT authorization; for OPT, you present your Employment Authorization Document (Form I-766, the EAD card).

Your SEVIS record must also be in Active status. According to official guidance, the SSA will not issue an SSN if your SEVIS record is not active, so it is worth confirming this with your DSO before you go.

• On-campus job: employer offer letter + DSO work-authorization letter
• CPT: Form I-20 endorsed with the CPT authorization
• OPT/STEM OPT: your EAD (Form I-766) card
• Your SEVIS record must be in Active status — confirm with your DSO first

Timing — when to apply after you arrive

Do not rush to the SSA office the day you land. New arrivals should generally wait until their arrival is recorded in the government systems the SSA checks (your entry and SEVIS registration), which takes a short period after you enter the US and your DSO registers you in SEVIS.

Official guidance (from the SSA and DHS) advises waiting about 10 days after arriving in the US — and after your DSO has activated your SEVIS record — before applying, so that the SSA can verify your records electronically. Applying too early is a common reason applications are delayed.

Because the exact waiting period and any local procedures vary, also follow the timeline your own International Student Services office gives you, and verify current guidance on the official SSA and Study in the States websites before you go.

• Wait until your entry and SEVIS registration are recorded in government systems
• SSA/DHS guidance: wait about 10 days after arrival; your DSO must have activated your SEVIS record
• Follow your international student office's timeline; verify on ssa.gov

Step-by-step: from job offer to your SSN card

1. Secure authorized employment. Get your on-campus job offer, CPT endorsement, or OPT EAD in place first — this is your basis to apply.

2. Get your DSO documentation. For on-campus work, ask your DSO for the work-authorization/eligibility letter and confirm your SEVIS record is active. Your DSO can also confirm you meet the requirements to apply.

3. Complete Form SS-5. The Application for a Social Security Card (Form SS-5) is the official form, available free on the SSA website. Fill it in carefully and honestly.

4. Apply in person. F-1 students generally must apply in person at a local Social Security office with original documents (the online application is typically not available to first-time noncitizen applicants). Use the SSA office locator to find and, where required, schedule your visit.

5. Submit and wait. The SSA reviews your documents and verifies your immigration records. Your card is mailed to your US address after processing. Processing time varies — verify current timelines on ssa.gov and give the SSA your correct mailing address.

• Form SS-5 is free — never pay a third party to "get" you an SSN
• First-time F-1 applicants apply in person with original documents
• The card is mailed to your US address after your records are verified

Documents to bring to the SSA office

Bring originals, not photocopies — the SSA needs to see original, unexpired documents to prove your identity, age, and work-authorized immigration status. Requirements can change, so cross-check the current list on the official SSA website before your visit.

Commonly required items for an F-1 student include your passport (with your F-1 visa), your most recent Form I-20, your admission record (Form I-94, usually retrievable from the official CBP I-94 website), and your work-authorization proof (DSO letter and job offer for on-campus work, CPT-endorsed I-20, or EAD for OPT).

If your name or details differ across documents, the SSA may ask for additional proof, so make sure your passport, I-20, and offer letter are consistent. When in doubt, ask your DSO to review your document set before you go.

• Passport with F-1 visa; most recent Form I-20
• Form I-94 (arrival record) — retrieve it from the official CBP website
• Work-authorization proof (DSO letter + job offer, CPT I-20, or EAD)
• Bring original, unexpired documents; verify the exact current list on ssa.gov

After you receive your SSN

Once your card arrives, give your SSN to your employer's payroll office so your wages are reported correctly. You can start work under your authorization even while the SSN is being processed, provided your employer follows the correct procedures — check with your employer and DSO.

Keep your card in a safe place and memorize the number rather than carrying the card daily. Share it only with legitimate parties who genuinely need it (employer, a bank if requested, the IRS at tax time). Never post it, email it, or give it to anyone promising to "speed up" a visa or refund.

Remember that having an SSN does not change your tax status. As an F-1 student you may still be a nonresident for tax purposes and have separate filing obligations, so see our tax guides for the next steps.

• Give the number to payroll so your earnings are reported correctly
• Protect it — memorize it, store the card safely, and never share it casually
• An SSN does not change your F-1 status or your tax-filing obligations