N-400 Eligibility Calculator

Have a green card? Enter the date on your card and your trips outside the US. The calculator gives you the earliest date you can file Form N-400 for citizenship. What you get: - Your earliest filing date, with the 90-day early filing window shown next to the date you actually become eligible - Your physical presence day count against the 913-day rule (548 days if married to a US citizen) - A check on every trip: 6 months to 1 year may break continuous residence, 1 year or more breaks it - The 3-year path for people married to a US citizen - A trip planner: add a future trip and see if it pushes back your filing date Why you can trust the answer: - Every result shows its source: the law (INA), federal rules (8 CFR) or the USCIS Policy Manual - Tested against USCIS's own worked examples - If a rule can be read two ways, the calculator picks the later date. Filing too early can cost you the $710 fee. Free. No sign-up. It runs in your browser, so your dates never reach a server.