Editorial Standards & Accuracy

N400Test.com was built by immigrants who went through the U.S. naturalization process themselves and wanted a calmer, clearer way to study than the scattered resources they found. Our guides, practice questions, and articles are written and edited by the N400Test.com editorial team. We are not lawyers, and nothing on this site is legal advice — we explain the official rules in plain language and always point you back to the primary source so you can verify anything that affects your case.

Every factual claim about eligibility, forms, fees, timelines, the civics test, the English requirement, and the oath is grounded in primary U.S. government sources rather than third-party summaries. Our core references are:

• The official U.S. Citizenship and Immigration Services (USCIS) website, including the Form N-400 page and its official instructions.
• The USCIS Policy Manual, which is the agency's controlling guidance on naturalization policy.
• The official civics questions and the reading and writing vocabulary lists published by USCIS for the naturalization test.

Each article lists the specific USCIS sources it relies on so you can confirm the details for your own situation.

Before a guide is published, it is checked line by line against the current USCIS source material. We pay particular attention to numbers that change — filing fees, fee waivers, processing times, residency periods, the 90-day early-filing window, and age or time-based exemptions — because outdated figures are the most common way prep sites mislead readers. Where the rules are nuanced or depend on individual circumstances, we say so plainly instead of oversimplifying.

USCIS updates forms, fees, and policy periodically. We review our naturalization content on a recurring basis and after any significant USCIS change, and each article shows a “last reviewed” date so you can see how fresh it is. If a form edition, fee, or policy changes, we update the affected guides and refresh that date.

If you spot something that looks out of date or incorrect, please tell us — accuracy on this topic matters more than anything else we do. You can reach us through our contact page, and we'll review and correct verified issues promptly.

N400Test.com is an independent educational resource. We are not affiliated with USCIS or any government agency, and using this site is never a substitute for official USCIS guidance or advice from a licensed immigration attorney or accredited representative. The site is free, requires no account, and is supported by unobtrusive advertising so that the study tools can stay free for everyone.

For the full legal notice, see our Disclaimer & Accuracy page.