If a person applies for a Mexican FMM online, will the background check be done immediately, and more importantly, before the FMM is made available to print out, and then at immigration you only have to get an entry stamp for validation and no further background check is done?

Or, is the FMM only filled out and paid for ahead of time when done online, and the actual background check is done when you present in person at immigration in Mexico?

  • 2
    Are you asking because you're concerned about the background check, or delays at immigration? When I've been with people getting an FMM at the border (not done online) the entire process has been very quick, and I imagine any background check is just cursory automated and not in-depth or time-consuming
    – Midavalo
    Mar 9, 2018 at 16:33
  • @Midavalo I'm asking because one of my travel partners may be denied entry into Mexico and if the background check is done beforehand when getting an FMM online, then maybe we would know if he will be allowed in ahead of time instead of getting turned around at the border?
    – TravelMate
    Mar 9, 2018 at 20:58
  • 1
    due to something that occurred in Mexico, or elsewhere in the world?
    – Midavalo
    Mar 9, 2018 at 21:00
  • @Midavalo Due to something in the US.
    – TravelMate
    Mar 11, 2018 at 1:44
  • I would be very surprised if their background check checked anything outside of Mexico in the short timeframe between you asking for the permit and leaving with it
    – Midavalo
    Mar 11, 2018 at 4:08

1 Answer 1


I recently entered Mexico from the US by road at Tecate. Mexican Immigration wasn't present at the crossing, which was completely un-staffed. Leaving Mexico at the same crossing a few days later was the same.

While Mexican Immigration does look at my FMM and passport when I enter by air, and the airline collects the FMM on my way out, the border is not necessarily a fully-sealed boundary.

Thus, the question "When do they do the background check?" assumes a fact not always in evidence.

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