U.S. Citizenship through Naturalization Early Filing Calculator

You can apply for U.S. citizenship through naturalization up to 90 days prior to meeting all eligibility requirements, and this handy calculator will allow you to calculate the earliest date you can file. Before you apply, you should ensure that you are 90 days or less from being eligible to apply for naturalization. If you apply even one day too early, USCIS can reject your application.

Please be aware that 90 days is not the same as 3 months; 3 months can have anywhere from 89 to 92 days. However, the requirement is 90 days.

Most people are eligible 5 years after becoming a permanent resident; for those married to a U.S. citizen it is 3 years. You can determine if you have met the residency requirement by looking at your Permanent Resident Card. For a permanent residency requirement of 5 years, if it says “July 4, 2015,” you meet the 5-year permanent resident requirement on “July 4, 2020.”

You must also meet all other eligibility requirements, such as continuous residence, physical presence, good moral character, residence in USCIS district where you will apply, civics knowledge, English language, and swearing allegiance to the U.S., among other things. If you don’t meet all of the requirements, you may not be eligible to apply for U.S. naturalization even after 5 years (or 3 years) have passed since becoming a permanent resident.

To quickly calculate when you can apply for U.S. naturalization, enter the date when you will meet all of the eligibility requirements below.

Fields marked as * are required.
This is the earliest date that you can file Form N-400 for U.S. naturalization based on the anniversary date entered.

Anniversary Date – The date you meet all eligibility requirements for U.S. citizenship through naturalization.

We have tried our best to make sure that this calculator is accurate. However, in case of any discrepancy for any reason, we will not be liable for the same. Please use this information at your own risk.

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For visitors, travel, student and other international travel medical insurance.

Visit or call +1 (866) INSUBUY or +1 (972) 985-4400