1. What is the Early Filing Calculator?

The Early Filing Calculator determines the earliest date you can file Form N-400 for U.S. naturalization, which is 90 days before completing 5 years of permanent residency.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• PR Date — Your permanent resident approval date (green card date)
• 5 years — Standard residency requirement for most applicants
• 90 days — The earliest you can file before completing 5 years

Explanation: USCIS allows filing up to 90 calendar days before meeting the continuous residence requirement.

3. Importance of Early Filing Date

Details: Filing early can help you begin the naturalization process sooner, but filing before this date will result in your application being rejected.

4. Using the Calculator

Tips: Enter your permanent resident approval date (from your green card) to calculate the earliest possible filing date for Form N-400.

5. Frequently Asked Questions (FAQ)

Q1: Is the 90-day rule exact?
A: Yes, USCIS will reject applications filed more than 90 days before eligibility.

Q2: What if I'm married to a U.S. citizen?
A: Different rules apply (3-year rule instead of 5-year rule). This calculator is for the 5-year rule.

Q3: Does this account for leap years?
A: Yes, the calculation automatically accounts for leap years in the date math.

Q4: What time zone is considered for the filing date?
A: USCIS considers the date your application is received at their lockbox facility.

Q5: Can I file exactly 90 days before?
A: Yes, 90 days before is the earliest acceptable filing date.