This page is general information, not legal advice. MimiDocu is not a law firm and does not provide legal advice or represent you before any government agency.
General overview
Basic eligibility for Form N‑400
Most applicants must be at least 18 years old and have been a lawful permanent resident (green card holder) for the required time. The exact rules depend on your filing pathway.
The 5-year permanent-resident pathway
If you have held a green card for at least 5 years, you may be able to apply. You must also show continuous residence, physical presence, good moral character, and basic English and civics knowledge.
The 3-year pathway for spouses of U.S. citizens
If you have been married to and living with the same U.S. citizen for at least 3 years, and your spouse has been a U.S. citizen for at least 3 years, you may be eligible sooner. You still need to meet residence, physical presence, and character requirements.
What else is required
General N‑400 requirements
Beyond the 5-year or 3-year residence rule, USCIS normally checks each of the following areas.
Continuous residence
You must have continuously lived in the United States during the required period. Long or repeated absences may affect your eligibility.
Physical presence
You usually need to have been physically present in the U.S. for at least half of the required residence period — about 2.5 years for the 5-year path, or 1.5 years for the 3-year path.
Good moral character
USCIS reviews your conduct during the required period. Certain criminal or immigration issues may require additional review.
English and civics
Most applicants must show basic knowledge of English and U.S. history and government. Some people may qualify for exceptions based on age, disability, or length of residence.
Oath of Allegiance
You must be willing to take the Oath of Allegiance to the United States and support the Constitution.
Important caveats
Situations that may require additional review
Some facts about your history may not automatically disqualify you, but they can make your case more complex. These are examples of situations that often need closer attention.
- A trip outside the U.S. of 6 months or more
- Certain criminal arrests, charges, or convictions
- Past immigration violations or removal proceedings
- Unpaid taxes, child support, or selective-service issues
- Claims that you were not lawfully admitted to the U.S.
Next step
Not sure where you stand?
Use our free eligibility check to see whether your situation appears ready for the N‑400 questionnaire.
This eligibility check is informational only. It does not guarantee approval, and it is not a substitute for advice from a licensed immigration attorney.
Official N‑400 form and instructions
For the latest official version of Form N‑400 and filing instructions, visit the USCIS website.
https://www.uscis.gov/n-400