20 000 Pesos

Mexico's inflation crisis of the mid-1980s forced denominations into territory that would have been unthinkable a decade earlier — the 20,000 Peso note being a direct consequence of an annual inflation rate that peaked above 150% in 1987. The Banco de México printed its own notes by this period, having developed substantial in-house production capacity, which gave it flexibility to respond quickly to denomination demands that the economy kept escalating.

The series was short-lived by design. Within a few years the entire peso structure was swept away by the 1993 redenomination, which replaced 1,000 old pesos with one nuevo peso — rendering this note worth precisely 20 new pesos on conversion.