In this paper, we show that the verbal inflection of Chichimec displays an interesting degree of complexity. Such complexity is created by the intersection of three different inflectional subsystems. One of such systems is the one formed by the inflectional classes of prefixes encoding person of subject and tense/aspect/mood. A second and partially independent subsystem involves a rich array of stem alternation patterns while a third one involves the inflectional use of tone, which is, for the most part, lexically specified.