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Green Card Naturalization Date Calculator

Find your eligibility date and earliest N-400 filing date.

Eligibility date

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Earliest filing date

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What this calculator does

This calculator projects when a lawful permanent resident becomes eligible for naturalization, and the earliest date to file Form N-400, based on the standard 5-year continuous residency requirement or the 3-year rule for those married to and living with a U.S. citizen spouse.

Worked example

Green card date of March 10, 2022 under the standard 5-year rule gives an eligibility date of March 10, 2027, with an earliest filing date 90 days earlier, onDecember 10, 2026.

Common mistakes

  • Filing before the 90-day window opens. Applications submitted too early can be rejected — the window is exactly 90 days before your eligibility date, not more.
  • Choosing the wrong residency rule. The 3-year rule has additional conditions (marriage to and living with a U.S. citizen spouse) beyond simply being married — verify eligibility carefully.
  • Ignoring absences from the U.S. Trips abroad longer than 6 months (or especially 1 year) can disrupt continuous residence and delay eligibility — this calculator doesn't account for travel history.
  • Letting travel documents lapse in the meantime. A years-long wait to eligibility is also long enough for a passport to need renewal — check its expiry separately.

Frequently asked questions

Why can I file 90 days before my eligibility date?+

USCIS allows N-400 naturalization applications to be filed up to 90 days before completing the required continuous residency period, to help offset processing time. This is often called the "90-day early filing rule."

How do I know if I qualify for the 3-year or 5-year rule?+

The 3-year rule generally applies if you've been married to and living with a U.S. citizen spouse for the past 3 years while holding a green card. The 5-year rule applies to most other permanent residents. Check current USCIS eligibility requirements for your exact situation.

Does this calculator account for time spent outside the U.S.?+

No — this tool only projects dates from your green card date and residency requirement. Extended trips abroad can affect your continuous residence and physical presence requirements — consult USCIS guidance or an immigration attorney if you've had long absences.

Is the eligibility date the same as when I can become a citizen?+

The eligibility date is when your required residency period is complete and you can file. Actual naturalization happens later, after your application is processed, biometrics, interview, and the oath ceremony are complete.

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