Becoming a United States citizen is one of the most important decisions you will ever make. It gives you the right to vote, the ability to sponsor family members, protection from deportation, and a U.S. passport. The process is called naturalization, and it starts with Form N-400. This guide walks you through every step — eligibility, cost, documents, the interview, and the civics test.
Am I Eligible for Citizenship?
To apply for naturalization, you generally must meet ALL of the following requirements:
- Age: Be at least 18 years old at the time of filing
- Green card: Have been a lawful permanent resident (green card holder) for at least 5 years — or 3 years if married to a U.S. citizen
- Continuous residence: Have lived continuously in the U.S. for at least 5 years (or 3 years if married to a U.S. citizen) before filing
- Physical presence: Have been physically present in the U.S. for at least 30 months out of the 5 years (or 18 months out of 3 years)
- State residence: Have lived in the state where you're applying for at least 3 months
- Good moral character: Demonstrate good moral character for the statutory period
- English and civics: Be able to read, write, and speak basic English, and pass a civics test about U.S. history and government
- Oath: Be willing to take the Oath of Allegiance
How Much Does Citizenship Cost?
- DocPros preparation fee: $349 — covers N-400 preparation, document checklist, professional review, interview prep guide, and civics study materials
- USCIS filing fee: $710 — includes $640 application fee + $85 biometrics fee (some applicants may qualify for a reduced fee of $320 or a full fee waiver)
What Form Do You Need?
- Form N-400 — Application for Naturalization (21 pages)
The N-400 is one of the longest and most detailed USCIS forms. It asks about your biographical information, residence history (5 years), employment history (5 years), travel outside the U.S. (5 years), marital history, children, moral character questions, and more. Accuracy is critical — inconsistencies can delay your case or trigger additional review.
Required Documents
- Copy of your permanent resident card (green card) — front and back
- Two passport-style photos (2x2 inches)
- Marriage certificate (if applying under the 3-year rule)
- Spouse's proof of U.S. citizenship (if applying under the 3-year rule)
- Tax returns for the last 5 years (or 3 years if applicable)
- Travel records — dates of all trips outside the U.S. in the past 5 years
- Court records for any arrests, charges, or convictions (if applicable)
- Evidence of any name changes
The Naturalization Process: Step by Step
- Determine eligibility — Verify you meet all requirements (DocPros can help)
- Prepare Form N-400 — Complete the application with supporting documents
- File with USCIS — Submit N-400 with filing fee ($710)
- Biometrics appointment — USCIS will schedule fingerprinting (2-4 weeks after filing)
- Interview — Attend an in-person interview at your local USCIS office (6-12 months after filing)
- English and civics test — Taken during the interview
- Decision — USCIS approves, denies, or continues your case
- Oath ceremony — Take the Oath of Allegiance and receive your Certificate of Naturalization
The Civics Test
During your interview, a USCIS officer will ask you up to 10 questions from a list of 100 civics questions about U.S. history and government. You must answer at least 6 out of 10 correctly to pass.
Topics include the Constitution, the Bill of Rights, the branches of government, U.S. history, geography, and national symbols. Study materials are available free on the USCIS website, and DocPros provides a study guide with your preparation package.
The English Test
The English test has three components, all administered during your interview:
- Reading: You must read aloud 1 out of 3 sentences correctly
- Writing: You must write 1 out of 3 sentences correctly
- Speaking: Evaluated during the interview conversation itself
Processing Time
- DocPros preparation: 2-3 business days
- USCIS receipt notice: 2-4 weeks after filing
- Biometrics: 2-8 weeks after receipt
- Interview: 6-12 months after filing (varies by location)
- Oath ceremony: Same day as interview or within a few weeks
Common Mistakes to Avoid
- Inaccurate travel history — List every trip outside the U.S., even short ones. USCIS cross-checks with passport stamps and CBP records
- Incomplete employment history — Include every job, even part-time or cash work
- Not disclosing arrests — Even if charges were dropped, dismissed, or expunged, you must disclose them on the N-400
- Filing too early — You can file up to 90 days before you meet the residence requirement, but not earlier
- Not preparing for the interview — Practice with the civics questions and review your N-400 answers before the interview
How DocPros Can Help
DocPros prepares your complete N-400 package for $349. Our AI system helps you compile your 5-year history of residences, employment, and travel, and cross-checks every field for consistency. You'll receive a civics study guide, interview prep tips, and step-by-step filing instructions. Every case is reviewed by a licensed professional before it reaches you.
The path to citizenship starts with one step. We're here to make sure that step is done right.
