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Fill USCIS Form I-9 Online

The official USCIS I-9 — complete employee and employer sections in your browser, then download. Your data never leaves your device.

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About Form I-9

Form I-9, "Employment Eligibility Verification," is required for every person hired to work in the United States — citizen or not. Federal law obligates employers to verify both the identity and work authorization of each new hire, and the I-9 is how that's documented. The employee completes Section 1 no later than their first day of work; the employer completes Section 2 within three business days, after physically (or via an authorized alternative procedure) examining the employee's identity and work-authorization documents.

Section 1 asks for your legal name, address, date of birth, Social Security number (optional unless your employer uses E-Verify), and your citizenship/immigration status — one of four checkboxes: US citizen, noncitizen national, lawful permanent resident (with your A-Number/USCIS number), or an alien authorized to work (with the relevant document number and expiration). If a preparer or translator helped you, the supplement (Supplement A) records that. Accuracy matters: the I-9 is the document immigration auditors review, and mismatches or missing fields are the most common compliance findings.

FormatFuse opens the current USCIS I-9 and lets you type into every field in your browser — nothing is uploaded, so the sensitive identity data on this form (SSN, A-Number, document numbers) stays on your device. Fill Section 1 as an employee, or complete the employer review in Section 2, then download the PDF. The completed I-9 is retained by the employer (not filed with USCIS) for the legally required period — three years after the hire date or one year after employment ends, whichever is later.

How to fill Form I-9

  1. 1

    Section 1 — Employee info

    Enter your legal name, address, date of birth, and (if required) SSN. This must be done by your first day of work.

  2. 2

    Citizenship / status

    Check exactly one attestation box. Lawful permanent residents add their A-Number/USCIS number; authorized aliens add the relevant document number and expiry.

  3. 3

    Preparer / translator

    If someone helped you complete Section 1, record them in Supplement A. Otherwise check that you did not use a preparer or translator.

  4. 4

    Section 2 — Employer review

    Employers: examine the employee's documents (List A, or List B + C) and record the title, number, and expiration. Due within 3 business days of hire.

  5. 5

    Download + retain

    Download the completed PDF. The employer keeps it on file — it is not sent to USCIS — for the required retention period.

Privacy reminder. Your inputs — including your SSN, EIN, or PAN — never leave your browser. We do not log or transmit form values.

This tool fills the form, it does not give advice. It puts the information you enter onto the official PDF. It does not calculate your taxes, check your answers, or tell you if something is wrong. Compare everything to the official instructions, and if your situation is anything beyond simple, have a professional review it before you file or submit.

FormatFuse provides a privacy-first form-filling tool. We are not affiliated with USCIS or the Department of Homeland Security and do not provide legal advice. Retain and produce the completed I-9 per federal requirements.

Frequently asked questions

Who fills out Form I-9 — the employee or the employer?

Both. The employee completes Section 1 by their first day of work. The employer completes Section 2 within three business days of the hire date, after examining the employee's identity and work-authorization documents. Each side fills only their part — don't complete Section 2 about yourself if you're the new hire.

Do I have to provide my Social Security number on the I-9?

Generally no — the SSN field in Section 1 is voluntary unless your employer participates in E-Verify, in which case it's required. You must still provide the other identifying information and present acceptable documents from the Lists of Acceptable Documents.

What documents do I need for the I-9?

Either one document from List A (which proves both identity and work authorization — e.g., a US passport or permanent resident card), OR one from List B (identity, e.g., a driver's license) plus one from List C (work authorization, e.g., a Social Security card or birth certificate). The full lists are on the last page of the form.

Is the I-9 sent to the government?

No. Completed I-9s are kept on file by the employer, not filed with USCIS or any agency. Employers must retain them and produce them only if an authorized official (USCIS, DHS, DOL) requests an inspection. Retention period: three years after the hire date or one year after employment ends, whichever is later.

Is it safe to fill the I-9 in my browser here?

Yes. The PDF and every field you type — including SSN and document numbers — stay on your device. There's no upload and no server log. Download the finished form and share it only through your employer's secure channel; never email an unencrypted I-9.

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