Marriage Green Card 3-Year Rule: When You Can Apply for Citizenship

The two naturalization tracks

The Immigration and Nationality Act provides two general naturalization tracks for adult LPRs:

• INA §316 (general naturalization) — 5 years as an LPR, continuous residence, physical presence 30+ months of the 5 years, good moral character 5 years.
• INA §319(a) (spouse of U.S. citizen) — 3 years as an LPR, married to and living in marital union with the U.S. citizen spouse for those 3 years, the spouse has been a U.S. citizen for those 3 years, continuous residence, physical presence 18+ months of the 3 years, good moral character 3 years.

The 3-year track under §319(a) is a substantial timesaver but comes with strict conditions. Failure of any one condition — divorce, separation, spouse's late naturalization, physical presence shortfall — kicks the applicant back to the 5-year §316 track.

The five §319(a) conditions in detail

Condition 1: 3 years as a lawful permanent resident

The applicant must have been an LPR for at least 3 years counting from the date on the green card (the resident-since date). N-400 can be filed 90 days before the 3-year anniversary — this early-filing window is codified at 8 CFR §334.2(b). Filing earlier than 90 days before the anniversary risks denial for premature filing.

Conditional residents (CR-1 spouses who received a 2-year conditional green card) count their LPR time from the date of initial conditional residence — not from I-751 approval. This means a CR-1 spouse can file N-400 in year 3 even if their I-751 removal-of-conditions petition is still pending, as long as USCIS acknowledges the pending I-751 in the naturalization interview.

Condition 2: 3 years of marriage

The applicant must have been married to the same U.S. citizen spouse for the entire 3-year period preceding N-400 filing. Marriages of shorter duration — even if the applicant became LPR through that marriage — do not qualify. The marriage must be legally valid where celebrated and recognized under U.S. law.

Condition 3: Living in marital union with the same U.S. citizen spouse

This is often the most-litigated condition. 'Marital union' means genuine cohabitation as married partners — not merely legally married. USCIS treats separation without divorce as breaking marital union in most cases. If you are separated pending divorce, formally separated by written agreement, or living apart for reasons other than temporary work assignments, USCIS may deny the §319(a) case.

Condition 4: The spouse has been a U.S. citizen for those 3 years

The U.S. citizen spouse must have held U.S. citizenship for the entire 3-year period. This is straightforward if the spouse is a birthright citizen. It gets tricky if the spouse naturalized during the 3-year window — you cannot count the pre-citizenship marriage time. If your spouse became a citizen 18 months ago, you cannot file under §319(a) until 18 more months elapse.

Condition 5: Continuous residence and physical presence

• Continuous residence — 3 years of continuous residence in the U.S. as an LPR before N-400 filing. Extended trips of 6+ months abroad may break continuous residence under INA §316(b); trips of 12+ months absolutely break it.
• Physical presence — at least 18 months (half the 3 years) physically present in the U.S. during the 3-year period.
• State residence — 3 months residence in the state or USCIS district where filing N-400.
• Good moral character — 3 years of good moral character preceding N-400 filing.

The early-filing window — 90 days before the anniversary

Under 8 CFR §334.2(b), N-400 may be filed up to 90 days before the 3-year LPR anniversary date. This lets applicants get in the USCIS queue and typically schedules the biometrics appointment shortly after. The interview happens 6-14 months later depending on field office backlog.

The 90-day early-filing window applies ONLY to the LPR duration calculation. All other §319(a) conditions must be satisfied at the time of the N-400 interview and oath — including continued marital union and the spouse's continued U.S. citizenship. If the marriage ends between filing and interview, USCIS will deny the §319(a) case and offer the applicant the option to convert to §316 (5-year) filing if that timeline can be met.

How divorce kicks you to the 5-year track

If the U.S. citizen spouse and LPR divorce (or the LPR takes any action that breaks marital union) during the 3-year period, the applicant loses §319(a) eligibility. They can still naturalize under §316 after 5 years total as an LPR, with all the standard §316 conditions.

Key timing scenarios:

• LPR since 2023, married to USC since 2023, divorce in 2026 — §319(a) is unavailable. Wait until 2028 (5 years as LPR) and naturalize under §316.
• LPR since 2023, married to USC since 2023, divorce in 2026 after N-400 filed under §319(a) — USCIS denies the §319(a) case and applicant must refile under §316 in 2028.
• LPR since 2023, married to USC since 2023, separated in 2026 but not divorced — §319(a) denied for lack of marital union. §316 available in 2028.
• LPR since 2023, USC spouse died in 2026 (still married at death) — §319(a) still available (INA §319(a) has a limited widow(er) provision, or apply under §319(a) if death was after filing).

N-400 filing fee and processing timeline

As of 2026, the N-400 filing fee is $760 (online) or $760+ (paper); biometrics fee is included. Fee waivers under Form I-912 remain available for low-income applicants. Reduced fee under Form I-942 is available for household incomes between 150% and 400% of federal poverty guidelines.

Current N-400 processing timeline as of mid-2026 averages 6-12 months from filing to oath, varying significantly by field office. Some offices (Baltimore, San Francisco) process in 4-6 months; others (New York, Miami, Atlanta) run 10-14 months. Check the USCIS processing times page for your local field office.

The interview and oath

At the N-400 interview, a USCIS officer verifies eligibility, tests English (reading, writing, speaking) and civics (10 questions from the list of 100), and reviews the application for good moral character issues. For §319(a) applicants, the officer often asks additional questions about the marriage — length, cohabitation, joint finances, joint activities — to confirm marital union at the time of interview.

If approved, the applicant is scheduled for the naturalization oath ceremony, typically within 1-6 weeks after interview. At the oath, the applicant becomes a U.S. citizen — Certificate of Naturalization issued that day, U.S. passport eligible immediately.

Common §319(a) denial patterns

• Separation without divorce during the 3-year window — USCIS treats as broken marital union.
• Spouse became a citizen too recently — the 3 years of joint citizenship-and-marriage does not compute.
• Physical presence shortfall — extensive foreign travel below the 18-month U.S. presence threshold.
• Break in continuous residence — trips of 6+ months trigger a rebuttable presumption of broken continuous residence; 12+ months conclusively break it.
• Good moral character issues — DUIs, unpaid taxes, false claims to citizenship (voting registration during LPR status), or criminal issues within the 3 years.
• I-751 removal of conditions still pending or denied — CR-1 spouses whose I-751 was denied for suspect marriage will face major hurdles on N-400.

What to bring to the §319(a) N-400 interview

• Original green card and passport.
• Spouse's proof of U.S. citizenship — birth certificate, passport, or Certificate of Naturalization.
• Marriage certificate.
• Proof of continued marital union — joint tax returns for the past 3 years, joint bank statements, joint mortgage/lease, joint utility bills, joint insurance, photos across the years.
• Any divorce/annulment decrees from prior marriages (both spouses).
• Selective Service registration proof for male applicants who were between 18-26 during LPR status.
• Certified court dispositions for any criminal history, however minor.
• Tax return transcripts (IRS Form 4506-T) for the past 3 years.

If you are approaching your 3-year anniversary and want to plan a §319(a) N-400 filing — or if you have separation, divorce, or physical presence concerns and need to evaluate whether §319(a) or §316 is the right track — book a 20-minute consultation. Bring your green card, marriage certificate, spouse's citizenship evidence, and a rough summary of your international travel for the past 3 years.