===
Temporary Residency: Monthly income of c.US$2,400-$2700 over the last 6 months (some consulates request 12 months); or savings balance of c.US$45,000 over the last 12 months.
Permanent Residency: Monthly income of c.US$4,300-$4500 over the last 6 months (some consulates request 12 months); or savings balance of c.US$180,000 over the last 12 months.
===
See https://www.mexperience.com/financial-criteria-for-residency-in-mexico/