1. What is the N-400 Filing Date Calculation?

The N-400 filing date calculation determines the earliest date you can submit your application for U.S. naturalization. It's based on your permanent resident (green card) date plus 5 years minus 90 days.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• PR Date — Your permanent resident (green card) approval date
• 5 years — Standard residency requirement for most applicants
• 90 days — Early filing allowance

Explanation: USCIS allows you to file Form N-400 up to 90 days before you complete your continuous residence requirement.

3. Importance of Correct Filing Date

Details: Filing too early can result in rejection of your application, while filing too late delays your naturalization process. Calculating the exact earliest filing date ensures your application is accepted.

4. Using the Calculator

Tips: Enter your permanent resident (green card) approval date exactly as shown on your card. The calculator will determine the earliest date you can file Form N-400.

5. Frequently Asked Questions (FAQ)

Q1: Is the 90-day early filing period always applicable?
A: Yes, for most applicants filing under the 5-year rule. Different rules may apply for spouses of U.S. citizens or military applicants.

Q2: What if my PR date was more than 5 years ago?
A: You can file immediately, as you've already met the residency requirement.

Q3: Does this calculator account for leap years?
A: Yes, the date calculation automatically accounts for leap years in the 5-year period.

Q4: What time zone is used for the filing date?
A: The date is calculated based on calendar days, not tied to any specific time zone.

Q5: Can I file online on the calculated date?
A: Yes, USCIS online filing system is available 24/7, so you can file at 12:01 AM on your earliest eligible date.