Kapampangan is one of the eight major languages of the Philippines. It has about 900,000 native speakers residing in all the towns of the province of Pampanga, including the city of Angeles; in four towns of Tarlac, namely, Bamban, Concepcion, Tarlac and Capas; in the town of Cabiao in Nueva Ecija; and in two towns of Bataan, namely, Dinalupihan and Hermosa.

This is an attempt to study the morphophonemic system of Kapampangan. It aims to capture the linguistically significant generalizations about morphophonemic changes and processes in the language. The first three chapters deal with the phonology and phonological processes of the language. The fourth chapter identifies, clarifies and describes the phonologically conditioned morphophonemic rules that specify the phonemic shapes of the inflectional forms of the verbs. Explanations for the different changes are descriptive rather than historical. Whenever necessary and helpful, the historical explanation of some morphological forms is added in the footnote.