The 2018–19 Ascenso MX season is a two-part competition: Apertura 2018 and Clausura 2019.
Nine teams met the requirements to be promoted to the Liga MX for the 2019–2020 season: Atlético San Luis, Juárez, Oaxaca, Sinaloa, Sonora, Tampico Madero, UdeG, Zacatecas, and Zacatepec.
Of that amount, MXN$60 million would go to the Ascenso MX team that is not certified to be promoted[clarification needed] and MXN$60 million would go to new projects determined by the Liga MX assembly.
[3][4][5] Teams in the Liga Premier de México must be certified to be promoted to Ascenso MX.
If a promoted team is not certified for Ascenso MX, the relegated Ascenso MX team is required to pay MXN$15 million, of which MXN$5 million are given to the team that is not certified, and MXN$10 million are for development projects of Ascenso MX.
Updated to games played on 11 November 2018Source: Ascenso MXNotes:Only regular season listed Source: Ascenso MX The eight best teams play two games against each other on a home-and-away basis.
In the final, if the two teams are tied after both legs, the match goes to extra time and, if necessary, a penalty shoot-out.
Updated to games played on 14 April 2019Source: Ascenso MXNotes:Only regular season listed Source: Ascenso MX The four best teams of each group play two games against each other on a home-and-away basis.
In the final, if the two teams are tied after both legs, the match goes to extra time and, if necessary, a penalty shoot-out.
Atlético San Luis were champions of Apertura 2018 and Clausura 2019 tournaments, automatically winning the Campeón de Ascenso and gained the promotion to Liga MX.
The aggregate table is used to determine seeding for the "Promotion" Final and for 2019–20 Copa MX qualification.