Most US and Canadian visitors to Mexico need a tourist permit called the Forma Migratoria Múltiple (FMM). It's free for most short trips, costs a small fee for longer ones, and you can get it online before you travel or on arrival at the border. Mexico is also mid-transition to phasing out the paper FMM in favor of passport stamps at airports — but at land crossings, paper is still common. This guide is the practical map for 2026.
Verify before relying on the specifics. Mexico's immigration rules have been in flux since 2022. The authoritative source is Instituto Nacional de Migración (INM) — the Mexican government immigration agency. Information below is accurate as of early 2026.
The 30-second answer
- What it is: A Mexican tourist permit, the FMM (Forma Migratoria Múltiple).
- Who needs one: US, Canadian, and most other citizens visiting Mexico. Mexican citizens and permanent residents don't.
- When required: Any visit beyond the "border zone" (roughly 20-25 km / 12-15 miles south of the border) or longer than 72 hours, regardless of distance.
- Where to get it: Online at inm.gob.mx before travel, or in person at an INM kiosk at the border/airport.
- Cost: Free for stays under 7 days (in some cases), ~$30-35 USD equivalent for longer.
- Valid for: Up to 180 days from the date of entry.
- What's changing: Air arrivals at most major airports now get a passport stamp instead of a paper FMM. Land arrivals still use paper.
When you actually need an FMM
Two categories of Mexico trip:
You DON'T need an FMM if all are true:
- You're staying within the "border zone" — generally defined as 20-25 km / 12-15 miles south of the international border. Some sources extend this further in specific regions (e.g., Baja California south to Ensenada is technically still border zone for some purposes).
- Your visit is shorter than 72 hours.
- You're not using the FMM as a re-entry document (e.g., flying out from a non-border Mexican airport).
Most day-trippers crossing at San Ysidro for lunch in Tijuana, weekend shoppers in Tecate, or quick visits to Nogales fall into this category and don't need an FMM.
You DO need an FMM if:
- Your trip is longer than 72 hours, regardless of distance.
- You're going beyond the border zone (Ensenada, Mexicali interior, Hermosillo, Mexico City, anywhere on the mainland).
- You're flying within Mexico (most domestic flights require FMM or passport-stamp equivalent for boarding).
- You're flying out of a Mexican international airport for a return flight to your home country — Mexican exit immigration checks for the FMM (or stamp).
How to get an FMM
Option 1: Online before you travel (recommended)
- Go to inm.gob.mx/fmme.
- Complete the form: name, nationality, passport number, dates of travel, accommodation address in Mexico (hotel name is fine), and purpose of visit (tourism).
- Upload a digital copy of your passport's photo page.
- Pay the fee (~$30-35 USD equivalent) by credit/debit card. Some short stays are free.
- Download and print the FMM. Bring it with you to the border.
Online FMMs are accepted at all entry points. The Mexican authorities prefer this option — it speeds up the border process.
Option 2: At the border or airport on arrival
At land crossings (Tijuana, Mexicali, Nogales, El Paso/Ciudad Juárez, Laredo/Nuevo Laredo, etc.):
- There's an INM (Instituto Nacional de Migración) office at every major land crossing on the Mexican side.
- Walk in, fill out the form on the spot, pay the fee, get the paper FMM stamped. Takes 10-20 minutes.
- The INM office is usually just past Mexican customs, on the Mexican side. Easy to miss — slow down once you're across and look for signage.
At airports:
- Most major Mexican international airports have largely phased out paper FMMs. You'll receive a passport stamp on arrival instead, with the duration written next to it.
- Some smaller airports still issue paper FMMs.
- The passport stamp serves the same function as the FMM — bring the passport on departure and immigration verifies you're within your authorized stay.
The "border zone" — what counts
This is the most-confused part. The border zone is loosely defined as the area within ~20-25 km of the international border, but the practical boundary differs by region:
- Tijuana proper: Within the border zone. Day trips to Avenida Revolución, Zona Centro, Zona Rio don't require FMM.
- Rosarito Beach: Within the border zone in most interpretations. Day trips okay without FMM, but check signage at Mexican checkpoints south of Tijuana.
- Ensenada: Beyond the border zone. FMM required. There's a checkpoint on the highway south of Rosarito where you'll be asked for it.
- Mexicali / Tecate: The cities themselves are border zone; going further south is not.
- Nogales, AZ → Nogales, Sonora: Sonora is its own case — the "Sonora Free Zone" (a regional version) extends further than typical border zone, but FMM rules still apply for long trips.
If you're not sure, get the FMM. The few dollars and 10 minutes are cheaper than getting turned around at a Mexican checkpoint 100 km south of the border.
How long is the FMM valid?
Up to 180 days from the date of entry. You declare your intended length of stay when you apply; the issuing officer approves up to 180 days.
Important: the FMM is for tourism, business meetings, or transit only. Working in Mexico — even remote work — is technically not covered by the FMM. For longer stays or work-related travel, you'd need a Temporary or Permanent Resident permit, which is a separate (much more involved) process.
If you lose your FMM
This is a real problem at exit. Mexican exit immigration verifies the FMM (or stamp); without it, you may be fined and held until you can pay. Replacement options:
- Apply online for a replacement at the INM website — you can do this from inside Mexico.
- Visit the local INM office — every major Mexican city has one. They can reissue with a fee (~$50 USD equivalent).
- Allow time at the airport for resolution. Show up extra early; the airport INM office can issue replacements but it takes time.
Best avoidance: clip the FMM to your passport and don't separate them. Take a photo of the stamped FMM as soon as you receive it so you have the number on file.
Fees
The current FMM fee (as of early 2026):
- Short stays: Free if your trip is under 7 days and within certain regions/airports (the rule is granular and changes — confirm with INM).
- Standard FMM: ~600 MXN (~$30-35 USD).
- Replacement (lost FMM): ~900 MXN (~$45-50 USD).
Payable in Mexican pesos cash, or by credit card online.
If you're driving into Mexico
Driving past the border zone requires a separate Temporary Import Permit (TIP / IITV) for your vehicle, in addition to the FMM for you personally. The TIP is a per-vehicle permit issued at Banjército offices at the border. Cost ~$50 USD plus a refundable deposit ($200-400 depending on vehicle age).
Note: Baja California is exempt — vehicles can drive throughout Baja without a TIP. Just the FMM is required for the driver/passengers.
Going beyond Baja into Sonora, Sinaloa, or further requires both FMM and TIP. See our rental car guide for rental-specific rules.
Practical tips
- Get the FMM online before you travel. Saves time at the border and lets you focus on driving / sightseeing instead of paperwork.
- Take a photo of the stamped FMM on arrival. If you lose the paper, the FMM number speeds up replacement.
- Keep the FMM with your passport. Don't separate them, don't put them in checked bags.
- Border-zone trips don't need an FMM — but bring your passport anyway. Mexican checkpoints may ask for documents even within the zone.
- If flying back via TIJ using CBX, you'll exit Mexican immigration at TIJ. They'll check the FMM (or stamp) before allowing you to board the flight.
Bottom line
For most day-tripping border-zone travelers, no FMM needed. For anyone going further into Mexico or staying more than 72 hours, get the FMM online before you go — easier than the in-person line and accepted everywhere. Driving past Baja requires a TIP for your vehicle in addition. Don't lose the paper.
See live wait times for southbound border crossings on the homepage, or read related guides: CBX, rental cars, declarations.