Micro, Small, and Medium Enterprises (MSMEs) are pivotal to economic growth and job creation, yet they face persistent challenges in accessing government-backed financing due to gaps in operational readiness. This paper presents a comprehensive framework for building standardized operational readiness assessment models tailored to MSMEs, aimed at enhancing their eligibility and sustainability in formal credit markets. It examines the core dimensions of readiness, including financial reporting, governance, compliance, and internal controls, while addressing the barriers posed by informality and data scarcity. The study outlines methodological approaches for selecting and categorizing key indicators, developing scoring frameworks, and integrating assessments into financing workflows. Emphasis is placed on governance, regulatory alignment, fairness, and capacity building to ensure inclusive and transparent evaluations. The paper concludes with strategic insights for policymakers and financial institutions on leveraging readiness models to de-risk lending and promote financial inclusion, alongside future pathways for model innovation through automation and real-time data integration. This framework offers a vital tool for scaling MSME financing and fostering sustainable economic development.