Form N-400 Explained for Indians: US Citizenship Application
Form N-400 is the naturalization application to become a US citizen. Most green card holders can apply after 5 years (3 years if married to a US citizen). The process includes background check, interview, and civics test.
In a nutshell
Form N-400 (Application for Naturalization) is how a permanent resident (green card holder) applies to become a US citizen. Eligibility generally requires 5 years as a permanent resident (3 years if married to and living with a US citizen), meeting physical presence and continuous residence requirements, passing an English and civics test, and demonstrating good moral character.
Basic eligibility
N-400 standard eligibility (5-year path)
- Permanent resident for at least 5 years
- Physically present in the US for at least 30 months of the last 5 years
- Lived continuously in the US (no single trip abroad of 6+ months)
- Currently residing in the district where you file for at least 3 months
- Ability to read, write, and speak English
- Knowledge of US history and civics (tested at interview)
- Good moral character during the 5-year period
The N-400 process
- Confirm eligibility (5-year or 3-year path; physical presence calculation)
- Complete Form N-400 and gather supporting documents
- File N-400 with USCIS (can file 90 days before the 5-year anniversary)
- Biometrics appointment
- Interview at local USCIS field office — English test + civics test
- Oath of Allegiance ceremony → you are a US citizen
The civics test
2025 civics test rules
- The 2008 civics test (100 questions, pass 6 of 10 asked) is currently in effect as of 2026
- The 2020 revised test (128 questions) was rescinded — applicants should study the 2008 version
- Study materials are available free at uscis.gov
- If you fail the test, you get one more attempt at a second interview
- Applicants 65+ who have been a permanent resident for 20+ years have a simplified 20-question list
When to file (90-day rule)
You can file up to 90 days early
USCIS allows filing N-400 up to 90 days before the 5-year permanent residence anniversary (or 3-year for spouse of US citizen). Use the USCIS Early Filing Calculator at uscis.gov to find your earliest filing date.
FAQ
In a nutshell
Q: Will I lose my Indian citizenship when I naturalize? A: India does not allow dual citizenship. When you take the US Oath of Allegiance, you renounce other citizenships — which means you lose Indian citizenship. You can then apply for an OCI (Overseas Citizen of India) card, which gives you lifelong visa-free travel to India and certain other rights, though OCI is not citizenship.
Q: I have a criminal record — can I apply for N-400? A: Some offenses bar naturalization or require careful analysis. Always consult an immigration attorney before filing N-400 if you have any criminal history, including arrests that did not result in convictions.
Q: How long does N-400 processing take? A: Currently 12–24 months at most field offices. Check current processing times at uscis.gov for your specific field office.
Q: Can I travel while N-400 is pending? A: Yes — you remain a permanent resident while N-400 is pending. You can travel with your green card and passport. Maintain your physical presence requirements — extended trips abroad could still affect your continuous residence calculation.
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