In the absence of a precise framework for real-time determination and management of project cash inflows, factors such as delayed payment of interim certificates by the client and deductions related to contractual retentions may expose the contractor to various financial difficulties and hinder the achievement of project objectives. Nowadays, with the emergence of modern computer-based technologies such as Building Information Modeling (BIM), it is possible to calculate project cash inflows at any stage of the project easily and within minutes. In this study, a framework was developed to determine the contractor’s cash inflow based on the BIM model and the regulations defined by the General Conditions of Contract. The proposed model was then implemented in a construction project, and the contractor’s cash inflows were accurately calculated. Subsequently, to manage the cash inflow process, three proposed scenarios related to advance payment and bank loans were presented and compared with each other based on profitability and liquidity indices. Furthermore, to identify the influence of key variables on the model outcomes, a sensitivity analysis was performed using the PAWN method. The results revealed that the profitability function is more sensitive to financial and investment-related variables, whereas the liquidity function is mainly influenced by factors associated with incoming cash flows.