The N-400 Naturalization Process Step by Step

Who this is for: Readers born in mainland China who have a U.S. green card and want to apply for citizenship, whether through "5 years as a permanent resident" or "3 years as a permanent resident married to a U.S. citizen." This guide takes you from counting the days, paying and filing, all the way to the interview and the oath.

Facts follow the USCIS website, last checked 2026-10-14. Items marked ⚠️ (fees, processing times, policies) change quickly, so confirm on the website before filing. This is not legal advice; if your situation is complicated (trips abroad over 6 months, arrests or records, tax issues), talk to an immigration attorney first.

1. Overview and rough timeline

Overall flow: Check eligibility → file the N-400 as early as 90 days before you qualify → receipt (extends your green card for 24 months) → biometrics (many people's are reused, so no appointment) → background checks (possibly a neighborhood investigation) → interview (English + civics test) → N-652 result → oath → certificate of naturalization

How to check processing times: see section 4.

2. Eligibility: count the days correctly first

1. The two most common routes

On the 3-year marriage route you need 3 years as a permanent resident and 3 years of marriage and a spouse who has been a citizen for 3 years, all three; you must remain married and living together from filing to the oath.

2. "Continuous residence" and "physical presence" are different

• Physical presence: a day count. USCIS counts both the day you leave and the day you return as days in the U.S.
• Continuous residence: about long absences:
  • A single trip of less than 6 months: generally no effect.
  • More than 6 months but less than 1 year: presumed to "break" continuous residence unless you show it didn't (for example, you kept your U.S. job, your family stayed in the U.S., you kept your home).
  • 1 year or more: automatically breaks it (unless an N-470 was approved in advance). On the 5-year route you generally must wait 4 years and 1 day after returning to apply again (and still rebut the presumption), or wait the full 4 years and 6 months; on the 3-year route, 2 years and 1 day / 2 years and 6 months.
• Repeated short trips (each under 6 months) can also be reviewed for whether the U.S. is still your main home.
• Continuous residence must be maintained from filing until the oath; don't take long trips after filing either.

3. The tax trap

If after getting your green card you ever filed taxes as a "nonresident alien" or didn't file for that reason, USCIS may presume you abandoned your permanent residence. The N-400 has a specific question on this.

3. When you can file: 90 days early

Both routes allow filing up to 90 calendar days before reaching 5 years / 3 years. The official method: count back 90 days from "the day before you first meet the time requirement." The official example: if you reach 5 years on June 10, the earliest filing date is March 12 of that year.

Notes:

• Only the permanent resident time can be early. Other conditions (for example 3 years of marriage, or the age and years for an English exemption) must already be met on the filing date, or the application is rejected or denied.
• Filing too early means rejection or denial, and the fee isn't refunded. Better a few days late.
• USCIS's old "Early Filing Calculator" page now redirects to an archive and may not work; calculate it yourself with the official method above, and leave a day or two of margin.

4. Fees and reductions ⚠️

1. Current fees (G-1055 fee schedule, 2026-10-07 edition)

The biometrics fee is included; you no longer pay a separate $85 (the old $640 + $85 in older guides is outdated).

2. Reduced fee: household income below 400% of the federal poverty line

• Request it in N-400 Part 10, with proof of household income (such as tax returns).
• 2026 standard (48 contiguous states), for example: about $63,840 or less for a household of 1, about $132,000 or less for 4 (follow the official poverty guidelines page; Alaska and Hawaii are higher).

3. Fee waiver: I-912

Any one of: you, your spouse or children receive a means-tested benefit (such as Medicaid); household income at or below 150% of the poverty line (2026: about $23,940 for 1, $49,500 for 4); or you're facing serious financial hardship.

4. How to pay: no checks since October 2025

• Since 2025-10-28, paper filings generally no longer accept personal checks, money orders or cashier's checks. Use G-1450 (credit/debit card) or G-1650 (ACH from a U.S. bank account). A few can request an exception with G-1651.
• Online filings pay through Pay.gov.

5. ⚠️ Fees may rise sharply: the June 2026 proposal

On 2026-06-23 DHS published a proposal in the Federal Register (Naturalization Application Fee Adjustments): raise the N-400 to $1,330 paper and $1,280 online, and end the $380 reduced fee and the I-912 waiver (keeping the military exemption). Comments closed 2026-08-24. As of 2026-10-14 we have found no final rule or effective date; the current $710/$760 still applies. Once a final rule takes effect, applications filed after it (by postmark or online submission time) pay the new fee. People who qualify for reductions should pay particular attention.

5. Online or paper?

Paper filings go to the N-400 Direct Filing Address for your state; sending to the wrong address slows things down. Sign the form; unsigned applications are always rejected. Include a G-1145 to get text/email receipt notifications.

N-400 form edition

For how to fill out each part and answer the Part 9 yes/no questions, see Filling out the N-400.

• Current edition: 01/20/25 (shown at the bottom of each page). Paper filings must have all pages from the same edition, with page numbers and edition dates visible, or they may be rejected.
• ⚠️ Along with the fee proposal above, USCIS has submitted a draft new N-400 (mainly changing Part 10, the reduced fee). Once published, follow the edition shown on the N-400 page.

What to include (basic list)

• Copies of the front and back of your green card;
• Marriage route: marriage certificate, proof of your spouse's 3 years of citizenship (U.S. birth certificate / naturalization certificate / passport bio page), divorce or death certificates for both spouses' prior marriages;
• Any arrests, convictions, or traffic incidents involving alcohol, drugs or injury: all court and disposition documents;
• Owed taxes: your IRS payment agreement;
• A single trip of 6 months to 1 year: evidence that residence wasn't broken (lease/mortgage, pay stubs, bank statements, tax transcripts and so on);
• All Chinese documents need complete English translations and a translator's certification (that the translation is complete and accurate and the translator is competent).
• Don't send originals unless specifically asked.

Question-by-question tips: Filling out the N-400.

6. Biometrics

• If USCIS needs them, it mails an ASC appointment notice; go on time. Missing it can lead to denial.
• Many people (especially those fingerprinted for their green card) receive a "Biometrics Reuse" notice and don't need to go again.
• The photo taken at biometrics may be printed directly on your naturalization certificate, so dress appropriately that day.
• The N-400 receipt, shown with your green card, automatically extends the green card for 24 months.

7. Background checks: new in 2025–2026 ⚠️

• August 2025: a USCIS memo requires a more comprehensive, holistic evaluation of "good moral character (GMC)."
• August 2025 → 2026-08-25: "neighborhood investigations" resumed and were formally added to the Policy Manual on 2026-08-25: officers may investigate around where you live and work, going back at least 5 years; this applies to all N-400s pending on 2026-08-25 and filed afterward. Applicants may voluntarily submit letters of recommendation (ideally from U.S. citizens who aren't relatives), which USCIS considers as one factor in whether to waive the investigation.
• Country-based holds: in December 2025 and January 2026 USCIS paused adjudication for nationals of 39 countries; China wasn't on the list. As of our check date, the USCIS page says the related memos are no longer in effect because of court orders.

8. The interview and oath (overview)

The interview: after you're sworn in, the officer goes through your N-400 line by line (addresses, jobs, trips abroad, marriage, the Part 9 yes/no questions and so on), and tests:

• English: speaking is evaluated through the interview conversation; reading, 1 correct sentence out of up to 3; writing, 1 correct sentence out of up to 3.
• Civics: if you filed on or after 2025-10-20, you take the 2025 test: up to 20 questions from a 128-question bank, passing with 12 correct (failing at 9 wrong); if you filed before 2025-10-20, the 2008 test (10 questions from 100, pass with 6).
• If you're 50 or older with 20 years as a permanent resident, or 55 or older with 15 years, you're exempt from English and can take civics in Chinese (with an interpreter); 65 or older with 20 years take a special set of questions.

The result is recorded on N-652: passed / continued (more evidence or a retest) / denied. Detailed process, what to bring and common questions: 👉 Naturalization interview day.

The oath: some offices hold it the same day; otherwise you're mailed an N-445 oath notice. Complete the N-445 questionnaire before you go; at the ceremony you turn in your green card, take the oath and receive your certificate of naturalization. Check your name and details on the spot; fixing errors there is easiest. You become a citizen the moment you take the oath.

To practice the 2025 civics test, try the PathToUS Citizenship Test app.

9. What applicants born in China should know

1. Chinese nationality is lost automatically: Article 3 of China's Nationality Law doesn't recognize dual nationality; Article 9 says a Chinese citizen settled abroad who voluntarily acquires foreign nationality automatically loses Chinese nationality. After the oath your Chinese passport can't be used to travel, going back to China requires a Chinese visa, and your hukou and resident ID should be canceled. Plan trips home and documents before the oath (see After the oath).
2. Communist Party and Youth League questions: N-400 Part 9, question 5.a asks whether you have ever been a member of, participated in, or been associated with any Communist or totalitarian party. Legally, being a member or associated within 10 years before filing through the oath generally bars naturalization, with statutory exceptions: involuntary membership; not knowing its nature and leaving once you did; ending before age 16; ending more than 10 years before filing; membership by operation of law; or membership needed for employment, food rations or other necessities of life. Answer truthfully; if this applies to you (including how Youth League and Young Pioneers membership is treated), consult an immigration attorney before filing and prepare an explanation. Concealment is far worse than disclosure and can lead to denaturalization later.
3. Get your travel records exactly right: if you often visit China, check every trip against CBP's I-94 travel history, passport stamps and tickets, and make sure the dates match your earlier applications. If any single trip exceeded 6 months, prepare evidence that residence wasn't broken.
4. Military, police and weapons training questions: the N-400 asks whether you've served in any country's military or police units and whether you've had weapons or military-type training. Answer according to the facts; if you're not sure whether an experience in China counts, don't guess; ask a lawyer.
5. Chinese documents: marriage certificates, divorce papers, court documents and so on all need complete English translations with a translator's certification.
6. Your name: you can request an English name or a spelling change when naturalizing (N-400 Part 2); the change carries through to your certificate, passport and Social Security card, so decide in advance.

10. What applicants report (since 2025, individual experiences, not guarantees)

Common themes from 2025–2026 public posts on Reddit r/USCIS, 1point3acres, PTT, VisaJourney and others:

• Speeds vary wildly: some went from filing to oath in 2 months; others filed in mid-2025 and only got an interview in mid-2026. In late 2025 many had scheduled interviews canceled and rescheduled months later, and most then passed. While waiting, use the official tool to see whether you're past normal processing time before submitting an inquiry.
• Interviews range from relaxed to strict: some finished in ten minutes without being asked about dates; others reported the officer reading out every trip date, address and job for confirmation, sometimes reading dates wrong and expecting you to confirm. Know your N-400 and travel records well, and speak up when something is read wrong instead of saying "yes" to everything.
• Longer English sentences: in 2026 community service organizations reported that some interviews used longer, more complete reading and writing sentences; practice full sentences rather than memorizing keywords.
• Biometrics are mostly reused; the photo on the naturalization certificate is the one taken at biometrics (or for the green card).
• Traveling between the interview and the oath: some suggest bringing proof of travel so you can explain trips after the interview when reviewing the N-445 questionnaire at the ceremony; don't let travel conflict with the oath date.
• Common mistakes: filing a few days too early and being rejected; on the marriage route, assuming "3 years of marriage" can also be 90 days early; omitting old traffic tickets or arrests; tax filing status inconsistent with green card status.

11. FAQ

Q1: Can I file on my 5-year anniversary? Earlier? Yes, up to 90 calendar days early (only for the permanent resident time). Filing too early is rejected and the fee isn't refunded.

Q2: I filed before October 20, 2025. Which test do I take? The 2008 test (10 questions from 100, pass with 6). If you filed on or after October 20, the 2025 test.

Q3: Can I request the $380 reduced fee online? No. Reduced fees and I-912 waivers are paper only.

Q4: Can I still pay by check? Generally not since 2025-10-28; use a G-1450 card payment or G-1650 bank debit; a few can request an exception with G-1651.

Q5: I heard it's going up to $1,330? That's only the June 2026 proposal; as of 2026-10-14 there's no final rule, and the current fee is still $710/$760. Check the N-400 page before filing.

Q6: My green card is expiring after I filed. What now? The N-400 receipt with your green card extends it automatically for 24 months; if the card is lost you generally still need to file an I-90.

Q7: Can I go back to China while my application is pending? Short trips are fine, but the continuous residence requirement applies until the oath, so avoid trips over 6 months, and don't miss biometrics, interview or oath notices.

Q8: I was in the Communist Youth League or the Party. Can I still naturalize? It depends on your situation and the statutory exceptions; you must disclose it truthfully, and we suggest a lawyer's assessment before filing.

Q9: Where do I check processing times? The USCIS processing times tool (choose N-400 and your field office), or your myUSCIS account for your case's estimate. ⚠️ For reference: third-party compilations of USCIS data put the national median for cases completed in FY2026 (through June–July 2026) at about 7 months, while offices' "80% of cases completed" times in August 2026 data were about 9–18 months. Follow the official tool.

Q10: Am I still Chinese after naturalizing? Under China's Nationality Law, settling abroad and voluntarily naturalizing means automatically losing Chinese nationality, and the Chinese passport can no longer be used.

Official links (last checked 2026-10-14)

• N-400 form, edition, filing methods, document checklist: https://www.uscis.gov/n-400
• USCIS fee schedule G-1055: https://www.uscis.gov/g-1055
• Reduced fee requests: https://www.uscis.gov/forms/filing-fees/additional-information-on-filing-a-reduced-fee-request
• Fee waivers (I-912): https://www.uscis.gov/forms/filing-fees/additional-information-on-filing-a-fee-waiver
• Poverty guidelines: https://www.uscis.gov/forms/filing-fees/poverty-guidelines
• Electronic payment, G-1651/G-1650: https://www.uscis.gov/g-1651
• Continuous residence and physical presence: https://www.uscis.gov/citizenship/learn-about-citizenship/citizenship-and-naturalization/continuous-residence-and-physical-presence-requirements-for-naturalization
• Policy Manual, continuous residence: https://www.uscis.gov/policy-manual/volume-12-part-d-chapter-3
• Policy Manual, physical presence: https://www.uscis.gov/policy-manual/volume-12-part-d-chapter-4
• Policy Manual, filing 90 days early: https://www.uscis.gov/policy-manual/volume-12-part-d-chapter-6
• Spouses of U.S. citizens, 3-year eligibility: https://www.uscis.gov/citizenship/learn-about-citizenship/citizenship-and-naturalization/i-am-married-to-a-us-citizen
• 10 steps to naturalization: https://www.uscis.gov/citizenship/learn-about-citizenship/10-steps-to-naturalization
• The interview and test: https://www.uscis.gov/citizenship/learn-about-citizenship/the-naturalization-interview-and-test
• The 2025 civics test: https://www.uscis.gov/citizenship-resource-center/naturalization-test-and-study-resources/2025-civics-test
• Naturalization ceremonies: https://www.uscis.gov/citizenship/learn-about-citizenship/naturalization-ceremonies
• Processing times: https://egov.uscis.gov/processing-times/
• 2026 fee proposal (Federal Register): https://www.federalregister.gov/documents/2026/06/23/2026-12542/naturalization-application-fee-adjustments
• Neighborhood investigation policy (PA-2026-10): https://www.uscis.gov/sites/default/files/document/policy-manual-updates/20260825-InvestigationsForNatzEligibility.pdf
• Attachment to the Constitution / Communist Party membership: https://www.uscis.gov/policy-manual/volume-12-part-d-chapter-7
• Nationality Law of the PRC (National Immigration Administration): https://www.nia.gov.cn/n741440/n741547/c1013967/content.html

Related guides: Filling out the N-400 · Naturalization interview day · Civics test · English test · Taking the test in Chinese · After the oath · Paths overview

Disclaimer: This guide is general information only and not legal advice. Immigration policies and fees change often; follow the latest from USCIS and other official sources, and consult a licensed immigration attorney or a DOJ-accredited representative about your case.