What is the processing time for Form N-400?

USCIS reports a typical processing range of 5–15 months for Form N-400 as of 2026-06-12. This varies by service center, case type, and current USCIS workload. Always check egov.uscis.gov/processing-times for the current live range.

What is the case inquiry date for N-400?

Your case inquiry date is your received date plus the high end of the published processing range (15 months). After this date, USCIS considers your case "outside normal processing time" and you may submit an inquiry.

Form N-400 processing time

Application for Naturalization

Typical range (estimated)

5–15 months

As of 2026-06-12 · source: USCIS historical data

Live USCIS data

USCIS updates processing times monthly. Check the official tool for your service center and case type:

egov.uscis.gov/processing-times

Estimate your timeline

Enter your case received date (from your Form I-797 receipt notice) to calculate your estimated completion window and case inquiry date.

Open estimator

Common questions

What is the processing time for Form N-400?: USCIS reports a typical processing range of 5–15 months for Form N-400 as of 2026-06-12. This varies by service center, case type, and current USCIS workload. Always check egov.uscis.gov/processing-times for the current live range.
What is the case inquiry date for N-400?: Your case inquiry date is your received date plus the high end of the published processing range (15 months). After this date, USCIS considers your case "outside normal processing time" and you may submit an inquiry.
Does premium processing apply to N-400?: Not available for N-400.

Full N-400 details ← All processing times