Social Security Number: How to Apply for an SSN in the U.S., Who Qualifies, and How to Protect It

Anyone authorized to work in the United States soon runs into the same question: how do I get a Social Security Number, the SSN? The number is issued by the Social Security Administration (SSA), the federal agency responsible for U.S. social security, and it is issued free of charge — no one pays anything, to the SSA or to any intermediary, to obtain one. This article brings together only official SSA and USCIS information: what the SSN is, who can apply, at what point in the process it is issued, how the application works, the documents required, the timelines, and what the SSA publishes about improper charges and misuse of the number. The topic connects with our guide to status options for those already in the U.S.

What the SSN is and what it is used for

The Social Security Number is a nine-digit number created to track the earnings of people who work in the United States and to determine eligibility for U.S. social security benefits. In practice, it also became an identification key used across everyday life in the country:

• Employment and payroll: employers use the SSN to report wages and pay social security contributions.
• Taxes: the number identifies the taxpayer in filings with the IRS, the U.S. federal revenue authority.
• Banking and credit: financial institutions commonly request the SSN to open accounts and to build a credit history.
• Future benefits: earnings recorded over a working life count toward retirement and other Social Security benefits.

The physical card is a plain piece of paper, but the number is permanent: as a rule, you keep the same SSN for your entire life.

Who can apply — and who cannot

The central rule is simple: the SSN is issued to people who are authorized to work in the United States. This group includes, among others:

• workers holding a valid temporary work visa;
• holders of an EAD (Employment Authorization Document), issued by USCIS;
• lawful permanent residents (green card holders);
• students and exchange visitors with specific work authorization, as explained below.

People in the U.S. as tourists (B1/B2) generally cannot obtain an SSN, because that status does not authorize employment. Non-work exceptions are extremely rare: they only occur when a federal law requires the number for a benefit or service, or when a government agency documents the need in writing, in a letter proving the requirement. It is not a common route, nor an alternative for anyone lacking work authorization.

When the SSN is issued in the process

There is a simple way to receive an SSN without visiting an SSA office. Forms I-765 (application for employment authorization) and I-485 (adjustment of status) include an option authorizing USCIS to share your data with the SSA and request issuance of the number. If that option is checked, after the application is approved the card is issued and mailed to the address provided — no additional form and no in-person visit.

Anyone who did not use that option, or who entered the U.S. on a work visa issued abroad, applies for the SSN directly with the SSA. In that case, the official guidance is to wait about 10 days after entering the country before visiting an office. The reason is technical: the SSA verifies your data against the immigration verification system, and your arrival records (such as the I-94) need to already appear in that system. Applying too early can stall issuance for lack of confirmation. The documentation involved in the process is detailed in the guide to essential documents for your assessment.

Step by step: how to apply for the SSN

1. Form SS-5 (Application for a Social Security Card), available on the SSA’s official website, is the form used for the application.
2. Original documents proving identity, age, and immigration status with work authorization are required for the application (details in the next section).
3. The application can start online: the SSA website allows the request to begin online and be finished in person at an agency office, generally within 45 days. The entire process can also be completed directly at the office, without the online step.
4. The application is completed in person at an SSA office, with the completed SS-5 and the documents. The nearest office is listed on the SSA’s official website by ZIP code.
5. The card is sent by mail to the address given in the application.

An important point about documents: the SSA accepts only original documents or copies certified by the agency that issued them. Plain photocopies — even notarized ones — are not accepted. The documents you present are returned to you.

Documents by situation

The exact list varies by case, but the official standard is to prove identity, age, and work authorization. The most common sets:

• Baseline for nearly every case: a valid passport with the U.S. visa and the I-94 arrival record (which can be viewed and printed on CBP’s official website).
• EAD holders: the employment authorization card itself, issued by USCIS.
• Approval notices: the I-797 (Notice of Action), when applicable to your case.
• F-1 students: Form I-20, together with the matching work authorization — on-campus employment, CPT, or OPT — under the rules of your program.
• J-1 exchange visitors: Form DS-2019 and proof of authorization for the paid activity provided for in the program.

Because each category has its own details, the list applicable to each case is the one published on the SSA’s official website.

Timeline: when the card arrives

In most cases, the card arrives by mail in about 2 weeks after the application is processed. It can take longer when the SSA must confirm your information against immigration records and that verification is still pending — more common when the application is filed in the first days after arrival. If the wait runs much longer, the status can be checked through the SSA’s official channel.

An SSN is not work authorization — and an ITIN is not an SSN

Two clarifications prevent serious confusion. First: holding an SSN does not authorize anyone to work. Authorization comes from immigration status and the documents issued by DHS/USCIS; the SSN only keeps the records. In some cases, the card itself bears a legend such as “VALID ONLY WITH DHS AUTHORIZATION,” making clear that the number is valid for work only while valid authorization exists. Understanding this difference is part of comparing immigration pathways clearly.

Second: an ITIN is not an SSN. The ITIN (Individual Taxpayer Identification Number) is issued by the IRS for tax purposes only, for people who must file U.S. taxes but are not eligible for an SSN. It does not authorize work, does not change immigration status, and does not substitute the SSN in any employment routine.

Improper charges and misuse of the number: what the SSA states

• The SSA never charges for an SSN. According to the SSA, issuance is free of charge, and any “issuance” or “expediting” fee charged by a person or website is not an SSA charge. The SSA also warns that some websites imitate the official one.
• The card and everyday life: according to the SSA, the card does not need to be carried day to day; the agency’s guidance is to keep it in a safe place, with other important documents.
• When the number is requested: according to the SSA, the number is requested in specific situations — an employer (at hiring), a bank, and tax obligations are the typical legitimate uses — and whoever requests the number should be able to explain why it is needed.
• Identity theft: the SSA reports that an SSN can be misused to open credit and accounts in someone else’s name, and that suspected misuse is reported through the agency’s official channels.

Frequently asked questions

Can I work while the card has not arrived?

Anyone with approved work authorization (a valid work visa, an EAD, or a green card) does not need to wait for the physical card to start: the employer is informed that the number has been requested, and the card is presented when it arrives. What authorizes the work is the immigration document, not the SSN card.

I lost my card. What now?

A replacement is requested with the same Form SS-5, presenting original identity and status documents. The number does not change — it is yours for life. There are official limits on the number of replacements.

Can a student have an SSN?

Yes, if the student has work authorization compatible with student status — such as on-campus employment, CPT, or OPT for F-1 students, or the activity provided for in a J-1 program. A student without work authorization is not eligible for an SSN merely for being enrolled.

I just arrived. Can I apply right away?

If the request was not linked to Form I-765 or I-485, SSA guidance is to wait about 10 days after entry into the U.S., so the records already appear in the SSA’s verification system. The application then follows the steps described above, with the required documents. The overall process also includes routes such as the one described in how the EB-2 NIW works, widely studied by qualified professionals.

Disclaimer and compliance notice: Meridian Global Mobility (MGM) provides operational coordination, document organization, and logistical support for Brazil–U.S. mobility projects. MGM is not a law firm and does not provide legal services, legal advice, or representation before government agencies. Any legal services are provided independently by licensed, independent attorneys in the United States. The content of this article is informational and does not constitute consulting or an eligibility determination.