Chapter 06 · Topic 06.7 · Green card / Citizenship
U.S. naturalization (Form N-400) for Canadians: becoming a U.S. citizen
Naturalization: 5 years LPR (3 years USC spouse), 30 months physical presence, English, 2025 civics (12/20 of 128). N-400: USD 760, 6-14 months. Canada-U.S. dual citizenship allowed.
Direct answer · 60-second summary
The 60-second version
Naturalization is the process by which a green card holder (LPR) becomes a U.S. citizen. Core requirements: (1) 5 years continuous LPR (3 years if spouse of a USC), (2) physical presence ≥ 50% of the required time, (3) residency in state for 3 months before filing, (4) good moral character, (5) English proficiency + civics test. Process: Form N-400, biometrics, interview + civics test, oath ceremony. Fee: USD 760 (2024 edition). Current time: 6-14 months by USCIS center. For Canadians: dual citizenship allowed by Canada (Citizenship Act) and by the U.S. — no need to renounce Canadian. 2025 Civics Test (effective October 20, 2025): 20 questions out of 128, ≥ 12 correct to pass.
Acronyms used in this guide
- USCIS — U.S. Citizenship and Immigration Services
- LPR — Lawful Permanent Resident
- PR — Permanent Resident (green card holder)
- N-400 — Application for Naturalization
- I-131 — Application for Travel Document (Advance Parole, Re-entry Permit)
- I-864 — Affidavit of Support (mandatory financial sponsorship for IR/CR)
- I-485 — Application to Register Permanent Residence (Adjustment of Status)
- SSN — Social Security Number
- SS-5 — Application for Social Security Card
- POE — Port of Entry
- EO — Executive Order
Eligibility (5 pillars)
- LPR status: valid green card at filing AND at interview.
- Continuous residence: 5 years LPR (3 years if married to USC ≥ 3 years and living together).
- Trip ≥ 6 months but < 1 year: rebuttable presumption of broken continuity.
- Trip ≥ 1 year: presumed broken, except with Re-entry Permit (Form I-131) and N-470 (residence preserved).
- Physical presence: ≥ 30 months out of 5 years (50%) — or ≥ 18 months out of 3 years for USC spouse.
- State residency for filing ≥ 3 months.
- Good moral character over the statutory period (5 or 3 years). Criminal record, child-support default, tax non-filing, false statement = potential bars.
- English test: oral (speaking/understanding) + reading + writing (1 sentence). Age exemptions (50/20, 55/15, 65/20).
- Civics test: 2025 Civics Test, 20 questions out of 128, ≥ 12 correct to pass.
- Oath of allegiance to the United States.
Step-by-step process
- Form N-400: file online (myUSCIS account) or by mail. USD 760 fee (2024 edition). May file 90 days before eligibility ("early filing").
- I-797C receipt in 2-4 weeks.
- Biometrics at a USCIS Application Support Center (ASC), 1-2 months after filing. Fingerprints, photo, signature.
- Interview + tests: 4-12 months after biometrics, at a local USCIS field office.
- Officer reviews N-400 file.
- English test (oral, reading, writing).
- 2025 civics test (20 questions chosen at random from 128).
- Same-day decision: Approved, Continued (RFE or re-test), Denied.
- Oath ceremony: 2-12 weeks after approval. Receive certificate of naturalization. Becomes U.S. citizen on oath day.
- Apply for U.S. passport: Form DS-11 + original naturalization certificate.
- Notify SSA of status change (SSN update).
2025 Civics Test (since October 20, 2025)
USCIS administers the 2025 Civics Test for N-400s filed on or after October 20, 2025.
- Format: oral, in English (unless age exemption).
- Question bank: 128 questions published by USCIS (vs. 100 in the 2008 test).
- Test: 20 questions randomly selected.
- Pass score: 12 correct out of 20 (60%).
- If applicant reaches 12 correct before 20, officer may early-stop.
- If failed, second attempt in 60-90 days. Failure on 2nd = N-400 denial.
Exemptions:
- 50/20: ≥ 50 yo + ≥ 20 years LPR = no English; civics in chosen language (with interpreter).
- 55/15: ≥ 55 yo + ≥ 15 years LPR = no English; civics in chosen language.
- 65/20: ≥ 65 yo + ≥ 20 years LPR = no English; simplified civics (20 questions selected from 20 starred ones).
- N-648 medical: full exemption if medical disability certified by authorized physician.
Good moral character: absolute and conditional bars
Absolute bars (make N-400 impossible):
- Murder.
- Aggravated felony after November 29, 1990 (qualified theft, drug trafficking, etc. — INA §101(a)(43) definition).
- Alien smuggling.
Conditional bars during the statutory period (5 or 3 years pre-N-400):
- Crime of moral turpitude.
- Multiple convictions totaling ≥ 5 years sentence.
- Drug offenses (except single cannabis possession ≤ 30 g).
- Prostitution / pimping.
- Immigration fraud / misrepresentation.
- Sham marriage.
- Polygamy.
- Failure to pay child support.
- Failure to file taxes.
- Lying to USCIS during process.
Travel outside U.S. during 5-year period
- Trip < 6 months: OK, doesn't break continuity or physical presence beyond days absent.
- Trip 6-12 months: rebuttable presumption of broken continuity. Restart counter unless rebutted (continuous U.S. employment, U.S. assets, U.S. family).
- Trip ≥ 1 year: presumed broken. Restart counter. Except Form I-131 Re-entry Permit (up to 2 years abroad) preserves LPR but doesn't fully save naturalization. Form N-470 (Application to Preserve Residence for Naturalization) can save residence if applicant works abroad for U.S. government, international agency, or U.S. company.
- Cumulative total: if total absences over 5 years > 30 months (50%), no physical presence requirement met.
Canada-U.S. dual citizenship
- Canadian side: the Canadian Citizenship Act has allowed dual citizenship since 1977. Becoming a U.S. citizen does not lose Canadian citizenship.
- U.S. side: the N-400 oath includes a renunciation of "foreign allegiance." USCIS treats this as symbolic — dual citizenship is tolerated in practice.
- Tax implications: U.S. citizen = lifelong worldwide taxation (until renunciation Form 8854). FBAR and FATCA continue. Canadian spouse must file I-864 if sponsoring.
- Passport: enter the U.S. with the U.S. passport, Canada with the Canadian passport. Keep both current.
Formulaires officiels (toujours utiliser la dernière édition)
Responsabilité du lecteur
Toujours télécharger la dernière édition du formulaire depuis le site officiel cité ci-dessous. Une édition expirée peut être rejetée par USCIS, DOS ou IRS. CanadaFlorida ne se substitue pas à un avocat licencié.
Every figure, rate, threshold, and deadline in this guide is drawn from a verifiable primary source listed at the bottom of the page. The article is updated whenever the underlying rules change, with a fresh review date stamped at the top.
Sources and references
Public sources verified as of the last review date.
- USCIS — Application for Naturalization (N-400). uscis.gov/n-400
- USCIS — 2025 Civics Test (128 questions). uscis.gov/2025-civics-test
- USCIS Policy Manual, Volume 12 (Citizenship and Naturalization). uscis.gov/policy/citizenship
- INA §316 (general naturalization), §319 (spouse), §337 (oath). cornell.edu/§1427
- Loi sur la citoyenneté du Canada (1977 amendments allowing dual citizenship). justice.gc.ca/c-29
Disclaimer
This guide is for educational purpose only. Figures, rates, thresholds, timelines and rules are drawn from public sources at the date shown and may change.
For any concrete decision, consult a licensed US immigration attorney and a cross-border tax attorney.