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Don’t remember your exact travel dates for the N-400?

USCIS publishes no rule for approximate dates. Here is what the form and instructions do say, what legal-aid practitioners advise, and how to narrow a date down before you have to estimate it.

Facts checked against the sources below on October 14, 2026. A drafting guide, not legal advice; not affiliated with USCIS or CBP.

What USCIS says

We found no statement in the form, the instructions or the USCIS Policy Manual about estimated trip dates. What they do say:

  • “Answer all questions fully and accurately.” (N-400 instructions)
  • The officer “will review your travel history and documents during your naturalization interview.”
  • The applicant has “the burden of establishing by a preponderance of the evidence” that they are eligible. (Policy Manual)
  • The penalty section covers anyone who “knowingly and willfully” falsifies or conceals a material fact.

What practitioners advise

The Immigrant Legal Resource Center’s annotated N-400 (April 2024) gives preparers this guidance for the travel table:

“Use approximate date if applicant does not remember the exact dates. Write "APPROX." before each date to indicate it is an approximate date.”

For frequent, repeated trips, it suggests describing the pattern, for example:

“Since 2019, I have been going to Mexico for approx. one month every year to visit my family.”

A pattern like that goes in Part 14, the extra-space section, marked with your name, A-Number and the reference Page 6, Part 8, Item 1. The immigration firm Berardi says the same thing in other words: without official records, “it’s still your duty to estimate the dates of your travel to the best of your ability.”

Narrow it down first

An estimate is a last step. Most dates can be pinned down from records you already have:

  1. Request your CBP record through FOIA. It is free; file it now.
  2. Check your passports for stamps, including expired passports.
  3. Search your email for airline names, “itinerary”, “boarding pass” and hotel confirmations.
  4. Read your card statements for the first and last foreign transaction of each trip.
  5. Look at your phone’s photos from the trip; each one carries a date.

Even when you cannot find both dates, one record usually fixes the month and another fixes the length. Mark only the date you truly could not find as approximate.

When to get a lawyer

If a trip may have lasted more than 6 months, or the dates you can document do not match what you remember, talk to an immigration attorney before you file. A long trip affects continuous residence, and that is a question of eligibility, not of paperwork.

TripRebuild helps with steps 2 and 5 of the list above for stamps: it reads your passport pages into dated trips and keeps each date linked to the stamp it came from, so you can see which dates are documented and which are not.

Sources