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U.S. Citizenship Through Naturalization
Naturalization is the process through which an eligible applicant becomes a United States citizen after meeting the requirements of federal immigration law. Most adult applicants qualify through the general five-year permanent-residence rule or the three-year rule for certain spouses of U.S. citizens.
Eligibility involves more than how long you have held a Green Card. Your travel, marriage history, prior immigration applications, good moral character, and other circumstances can affect whether—and when—you qualify.
The Law Offices of Osas Iyamu, LLC helps applicants evaluate eligibility, prepare Form N-400 and supporting documents, and address concerns before the naturalization interview.
Who Qualifies for Naturalization?
Most adult applicants apply under one of these two categories:
| Requirement | General five-year rule | Qualifying spouse of a U.S. citizen |
|---|---|---|
| Lawful permanent residence | Generally, at least five years | Generally, at least three years |
| Continuous residence | Generally, five years immediately before filing | Generally, three years immediately before filing |
| Physical presence | At least 30 months during the five years before filing | At least 18 months during the three years before filing |
| Marriage requirements | Eligibility does not depend on marriage to a U.S. citizen | Additional marriage and marital-union requirements apply |
The principal statutory provisions are INA § 316, 8 U.S.C. § 1427, and INA § 319, 8 U.S.C. § 1430. Limited early-filing provisions and other exceptions may apply.
Applicants under these categories generally must also:
- Be at least 18 years old when filing;
- Have been lawfully admitted for permanent residence;
- Meet the applicable three-month residence requirement in the state or USCIS district with jurisdiction;
- Demonstrate good moral character;
- Meet the English and civics requirements, unless an exception applies;
- Demonstrate attachment to constitutional principles and take the Oath of Allegiance, subject to permitted modifications or a qualifying waiver.
Special rules apply to certain military applicants, qualifying survivors of abuse, and other categories. If a parent was a U.S. citizen, first determine whether you already acquired citizenship at birth or during childhood. Our Acquisition of Citizenship page discusses citizenship through a parent at birth.
Applying Through Marriage to a U.S. Citizen
Under the ordinary three-year rule in INA § 319(a), as explained in USCIS guidance for spouses of U.S. citizens, you generally must:
- Have been a lawful permanent resident for at least three years, subject to the limited early-filing rule;
- Have been married to and living in marital union with the same U.S. citizen spouse during the three years immediately before filing;
- Have a spouse who was a U.S. citizen throughout that three-year period;
- Remain legally married to that spouse, who must remain a U.S. citizen, through naturalization.
Under its marriage and marital-union guidance, USCIS generally considers marital union to mean actually residing together, although limited exceptions apply. The three-year marital-union requirement concerns the period before filing. USCIS does not impose a separate requirement to complete three years of living together measured backward from the interview.
A separation or change in living arrangements should nevertheless be reviewed because its timing and circumstances may affect whether the requirements were met.
What Happens if You Divorce?
A divorce before naturalization generally ends eligibility under the ordinary three-year marriage-based route.
Divorce does not start a new five-year waiting period. Eligibility under the general five-year route is assessed using the date your lawful permanent residence began, together with the other requirements—not the date of divorce.
Separate provisions may apply to qualifying survivors of abuse. The effect of divorce on an already-filed application requires individual review.
When Can You File Form N-400?
Under USCIS early-filing guidance, certain applicants may file Form N-400 up to 90 calendar days before completing the required five-year or three-year continuous-residence period.
Early filing does not waive the other eligibility requirements. For example, an applicant using the ordinary marriage-based route generally must already satisfy the full three-year marriage and marital-union requirements, including the spouse’s citizenship throughout that period.
Your filing date should be calculated using your permanent-residence date, eligibility category, travel history, and other relevant circumstances.
How Does Travel Affect Naturalization?
Continuous residence concerns maintaining your residence in the United States. Physical presence concerns the actual time you spend in the country. Both requirements must be satisfied.
Under USCIS continuous-residence guidance, for most applicants:
- An absence longer than six months but shorter than one year creates a presumption that continuous residence was interrupted. Sufficient evidence may overcome that presumption.
- An absence of one year or longer generally breaks continuous residence unless a qualifying exception applies.
After a one-year-or-longer absence, waiting four years and one day, or two years and one day for an otherwise qualifying spouse, does not automatically establish eligibility. Part of the earlier absence remains within the relevant review period, so you may still need to overcome the six-month presumption.
Waiting four years and six months, or two years and six months, generally avoids that presumption arising from the earlier absence. Additional travel and all other requirements still need review.
Continuous residence generally must continue through naturalization. Keep complete departure and return records, and have extended absences reviewed before relying on a particular filing date.
Good Moral Character and Your Immigration History
Under USCIS good-moral-character guidance, the requirement generally covers the five years before filing, or three years under a qualifying marriage-based provision, and continues through the oath ceremony. USCIS may also consider earlier conduct when relevant.
Criminal matters, tax compliance, support obligations, false statements, and other conduct may require careful review, including assessment of statutory bars to good moral character. Their effect depends on the applicable law and individual circumstances. Having no criminal convictions does not, by itself, establish good moral character.
USCIS also examines whether permanent residence was lawfully obtained. Possessing a Green Card does not resolve every question about the underlying eligibility for that status. Earlier applications and supporting records should be reviewed for accuracy and consistency.
The applicant bears the burden of establishing eligibility. The Supreme Court discussed this principle in Berenyi v. District Director, 385 U.S. 630, 637 (1967). Complete, truthful answers and appropriate supporting evidence are essential.
For concerns about citizenship that has already been granted, see our Denaturalization page.
English and Civics Testing
Unless an exception applies, applicants must demonstrate the required ability to read, write, speak, and understand English, along with knowledge of U.S. history and government.
Under USCIS naturalization testing guidance, the applicable civics test generally depends on when Form N-400 was filed:
| Filing date | Civics test |
|---|---|
| Before October 20, 2025 | The 2008 test: up to 10 questions from a 100-question study list; six correct answers are required. |
| On or after October 20, 2025 | The 2025 test: up to 20 questions from a 128-question study list; 12 correct answers are required. |
Age-Based Testing Exceptions
The following age-based testing exceptions are measured when you file:
| Age and permanent-residence history | Available consideration |
|---|---|
| Age 50 or older, with at least 20 years living in the United States as a permanent resident | English-language exception; civics still required |
| Age 55 or older, with at least 15 years living in the United States as a permanent resident | English-language exception; civics still required |
| Age 65 or older, with at least 20 years living in the United States as a permanent resident | English-language exception and special consideration on the civics test |
Eligible applicants may take civics in their language of choice with an appropriate interpreter. The age-based English exceptions do not eliminate the civics requirement.
Disability Exceptions and Accommodations
A qualifying physical or developmental disability or mental impairment may support a medical exception to English, civics, or both. The condition must prevent the applicant from meeting the applicable requirement and must have lasted, or be expected to last, at least 12 months.
Form N-648 must be properly completed and certified by an authorized medical professional. A diagnosis alone does not establish eligibility, and USCIS determines whether the certification is sufficient.
Testing accommodations—such as additional time or a sign-language interpreter—are different from a medical exception. Our office can help assess which request fits your circumstances.
Can You Apply While Form I-751 Is Pending?
As explained in USCIS guidance on conditional residents and naturalization, time spent as a conditional permanent resident generally counts toward naturalization eligibility. An otherwise eligible applicant may file Form N-400 while Form I-751 remains pending.
Filing for naturalization does not replace the requirement to remove conditions. For ordinary marriage-based cases, USCIS must approve the removal of conditions before approving naturalization.
See our Conditional Permanent Residence page for the related I-751 requirements.
What if Your Green Card Expires While N-400 Is Pending?
Under USCIS guidance on permanent resident documentation, for qualifying applications properly filed on or after December 12, 2022, the N-400 receipt notice, presented with the Green Card, extends the card’s validity for 24 months from its expiration date.
Expiration of the card does not itself end permanent resident status. However, a lost or damaged card, an expiring extension, or a need for current proof of status may require additional action. Conditional residents must still meet their separate requirements to remove conditions.
What Happens During the Naturalization Process?
The naturalization application and examination process generally includes:
- Eligibility review: Identify the applicable category, filing date, and potential concerns.
- Application preparation: Complete Form N-400 and assemble supporting evidence.
- USCIS review: Complete background checks and attend any required biometrics appointment.
- Interview and testing: Answer questions about your application and background and complete any required tests.
- Decision and oath: Respond to any additional evidence requests and, if approved, complete the oath requirement.
Approval at the interview does not itself make you a citizen. Naturalization generally becomes complete when you take the Oath of Allegiance, unless a lawful waiver applies. Relevant changes while your application is pending should be reviewed and disclosed as required.
Speak With a Naturalization Attorney in Ocala
The Law Offices of Osas Iyamu, LLC helps applicants evaluate eligibility, identify potential concerns, prepare supporting documents, and get ready for the naturalization interview.
For your consultation, gather your Green Card, travel history, previous immigration applications and notices, and relevant marriage, divorce, tax, or court records. These materials help us assess your circumstances and identify what else may be needed.
Learn more about Attorney Osas Iyamu and our immigration practice.
Schedule an immigration consultation to discuss your eligibility and next steps.
Call 1-800-974-6480 or 352-237-2403.
Disclaimer: This page provides general information and is not legal advice. Immigration laws, policies, and procedures may change, and eligibility depends on individual circumstances. Reading this page or contacting our office does not create an attorney-client relationship. Representation begins only after a written engagement agreement is signed.
Last updated: October 4, 2026