How to Fill Out Form I-9 — Line-by-Line Instructions (2026)
Filling out employment eligibility verification paperwork can feel overwhelming, but understanding how to fill out I-9 correctly is essential for both employers and employees. Whether you are onboarding a new hire or navigating compliance as an HR professional, this guide provides the clarity you need to complete the USCIS Form I-9 accurately.
What is Form I-9?
Form I-9 is used by employers in the United States to verify the identity and employment authorization of their employees. Every person hired to work in the U.S. must complete this form to prove they are legally allowed to work.
Step-by-Step Instructions: Section 1 (Employee Information)
Employees must complete Section 1 no later than their first day of work. You will need to provide:
- Full legal name and address.
- Date of birth and Social Security Number (optional, unless you are using E-Verify).
- Your citizenship or immigration status.
Documenting Your Status
You must check one of four boxes indicating your status (Citizen, Noncitizen National, Lawful Permanent Resident, or Alien Authorized to Work). If you need to manage multiple identity documents before compiling your packet, use our /tools/merge tool to organize your files.
Step-by-Step Instructions: Section 2 (Employer Review)
Employers have three business days to verify the documents presented by the employee. You must physically examine the documents to ensure they appear to be genuine.
| Document Category | Purpose | | :--- | :--- | | List A | Proves both identity and work authorization | | List B | Proves identity only | | List C | Proves work authorization only |
Tips for Maintaining Compliance
Maintaining digital copies of sensitive employment documents requires security. Use /tools/protect to password-protect your digital files to ensure compliance with privacy regulations.
Frequently Asked Questions
Can I fill out Form I-9 electronically?
Yes, you can use digital platforms to facilitate the process, but you must ensure the final document is stored securely. If you have a scanned version of a document, use /tools/ocr to extract text if needed.
What happens if I make a mistake on the form?
Errors should be corrected by crossing out the incorrect information, entering the correct data, and initialing and dating the correction.
How long should I keep the I-9?
Employers must retain Form I-9 for three years after the date of hire or one year after the date employment ends, whichever is later.
Start Now
Ready to get your documentation in order? Visit our /forms library to find the latest version of the I-9, or use our /tools/editor to finalize your digital documents efficiently.