Multiple theoretical frameworks from diverse disciplines illuminate the financial domain of behavioral health and its interconnections with other wellness domains. Complexity theory reveals how variations in financial health emerge from complex interactions between domains with feedback loops that can either amplify problems or facilitate recovery. Financial capability frameworks demonstrate how individual agency operates within structural constraints, while financial interdependence theory shows how financial decisions emerge from social relationships and cultural obligations, challenging independence assumptions. Life course theory explains how financial experiences accumulate over time, creating cumulative advantages or disadvantages affecting lifelong health trajectories. Scarcity theory elucidates how resource constraints impair cognitive bandwidth and decision-making. Financial socialization theory traces how early family experiences shape lifelong money attitudes and behaviors. The evolution of the term “social determinants” to “drivers of health” emphasizes dynamic interplay between individual agency and systemic factors, helping practitioners distinguish between proximal and fundamental causes while recognizing intervention opportunities. These multidisciplinary frameworks provide helping professionals comprehensive tools for understanding complex pathways through which financial circumstances influence behavioral health outcomes.