Check whether you're eligible to file Form N-400 for naturalization — the 5-year and 3-year (spouse) tracks, physical presence, continuous residence and the 90-day early-filing rule.
1
Which track applies to you?
2
Years as a permanent resident (green card)
How long you've held your green card. You can file up to 90 days before hitting the 5 or 3-year mark.
3
Total days physically present in the US
Total days inside the US during the period (as a green card holder). Need 913 (5-yr) or 548 (3-yr).
4
Longest single trip outside the US
A trip of 6+ months may break continuous residence; 1 year or more breaks it automatically.
5
Lived in your current state/district 3+ months?
N-400 eligibility
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Requirement check
A long trip or close day-count? Get it checked first.
Filing one day short, or after a 6+ month trip, is a top cause of N-400 denial — and you lose the fee. An immigration attorney can confirm your continuous residence and physical presence before you file. [Affiliate link: US immigration attorney]