Application Help
N-400 Early Filing: How to Apply for Citizenship 90 Days Early
You can file Form N-400 up to 90 days before you meet the residence requirement. Here is how to calculate your exact date and avoid costly mistakes.
Author: USCitizenship101 Editorial Team
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Application Help
Form N-600: How Children Get a Certificate of Citizenship
Many children become citizens automatically when a parent naturalizes. Here is how Form N-600 proves it, who should file, and when a passport is enough.
Application Help
Dual Citizenship in the USA: Can You Keep Your Other Nationality?
The United States allows dual citizenship, but your other country may not. Here is what the oath means, how passports and taxes work, and what to check before you naturalize.
Application Help
Citizenship Through Marriage: The 3-Year Rule for Spouses of U.S. Citizens
How spouses of U.S. citizens can apply for citizenship after 3 years instead of 5, what "living in marital union" means, and what evidence to bring.
Application Help
Good Moral Character for U.S. Citizenship: What USCIS Looks At
What USCIS considers when it decides whether you have good moral character, which issues are bars, and how to show your positive contributions.
Application Help
Continuous Residence and Physical Presence for U.S. Citizenship Explained
How long trips abroad affect your eligibility for citizenship, the difference between continuous residence and physical presence, and how to protect your case.
Civics Test
128 Civics Questions and Answers for the 2025 Citizenship Test
Every official question and answer for the 2025 civics test, grouped by topic, with memory tips and the 65/20 questions marked.
Application Help
N-400 Filing Fee in 2026: How Much Citizenship Costs and How to Pay Less
The application costs $710 online or $760 on paper. Here is who can pay $380 or nothing at all, and how to pay correctly the first time.
Application Help
How to Become a US Citizen in 2026: The Complete Step-by-Step Guide
From checking eligibility to taking the Oath of Allegiance, here is every step of naturalization explained in plain English.
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