Cash waqf, an Islamic charity concept, has great social and economic development potential. The numerous determinants determining individuals' intents to participate in monetary waqf are investigated in this study, with a focus on the influential elements of attitude, subjective norm, and perceived behavioural control as presented by the Theory of Planned Behaviour. This study adopts a quantitative methodology to examine the intricate interrelationships between attitude, subjective norm, perceived behavioural control, and the intention to engage in financial waqf, drawing on considerable literature in behavioural theories and waqf studies. A comprehensive survey instrument was used in the study to capture varied perspectives and demographics, allowing for a sophisticated investigation of factors influencing individuals' intents. This study intends to determine the relative importance and interplay of attitude, subjective norm, and perceived behavioural control in affecting intentions towards cash waqf participation using statistical techniques such as structural equation modelling. The findings are intended to provide significant insights for policymakers, waqf organisations, and practitioners by shining light on the underlying drivers and challenges associated with cash waqf involvement. The findings of this study have the potential to inspire specific interventions and strategies aimed at increasing involvement and support for cash waqf initiatives, thereby contributing to the overall growth of waqf institutions and social well-being.