Mexico has introduced the electronic FMM (Forma Multiple Migratoria aka tourist visa). It applies exclusively when you enter Mexico by land, through the states of Baja California, Sonora, Chihuahua, Coahuila, Nuevo Leon, and Tamaulipas, is valid for travel throughout Mexico and has a maximum validity of 180 days for one trip only.
With the electronic FMM, the INM modernizes the procedures to facilitate your registration when entering Mexico so you can save time and avoid long lines. Go to: www.inm.gob.mx/fmme select the language of your choice, choose the border entry and provide your personal details including passport information, and the reason for your trip. If your stay is for more than 7 days, the cost is $ 500.00 (pesos) per person, you can pay it online with credit or debit card. Save and Print your form. Children under two years of age or stays of less than 7 days are not charged any fees. You will have 30 days to use this form at the border.
When you get to the border, go to the INM office and present the officials your printed form, they will verify it in their system and stamp it to make it "official". Keep the stamped portion of the form in a safe place, you will need to return it to an immigration office when you exit the country. Failure to return the form for those traveling less than 7 days, could cause that you have to pay a fine and the $500.00 fee, and possible denial of a new permit.
With the electronic FMM your entry to Mexico by land is EASY, FAST AND SAFE!