Selecting and prioritizing software projects under limited financial, human, and time resources is a major challenge for organizations seeking to achieve their strategic objectives. This study aims to propose a software project management model based on organizational strategy using a cost–benefit approach. The proposed model integrates three main dimensions: strategic alignment, economic evaluation, and risk management, providing a comprehensive framework for evaluating and prioritizing software projects. Strategic alignment is assessed by determining the degree of relationship between each project and the organization’s strategic objectives, together with the relative importance of each strategic dimension based on expert judgments. Economic performance is evaluated using the Net Present Value (NPV) and Benefit–Cost Ratio (BCR), while project risks are assessed across three dimensions: technical, organizational, and operational risks. The relative impact of these risk dimensions is determined through expert judgment and incorporated into the overall project risk score. To evaluate the applicability of the proposed model, a case study was conducted at TechVision, a software company developing financial and management applications. The case study involved ten candidate software projects for the fiscal year 1405, with a total available budget of 1,800 million tomans. The required data, including project costs, expected revenues, strategic alignment scores, NPV, and risk levels, were obtained from actual financial information and expert assessments using the Delphi method. The results demonstrate that integrating strategic, economic, and risk-related criteria enables a more comprehensive prioritization of software projects. Based on the final evaluation, four projects were identified as definite priorities for selection. The findings indicate that the proposed model can support more effective resource allocation, risk reduction, and enhancement of both strategic and economic value in software project portfolio management.