This paper drafts a theoretical framework for cultural fusion theory. This theory borrows from various theoretical frameworks to supply a more realistic description of the immigrant experience. Specifically, cultural fusion theory describes how newcomers acculturate into the dominant culture and preserve aspects of their minority culture, while at the same time the dominant or host culture also fuses aspects off the newcomer’s culture into the dominant culture to generate a fused intercultural identity. Boundary conditions, assumptions, axioms, and theorems are proposed to determine cultural fusion theory.