Post-project financial auditing is a critical tool for ensuring transparency, accountability, and financial accuracy within small and medium-sized enterprises (SMEs). As SMEs navigate project-based operations, it is essential to assess the financial outcomes of completed projects to inform future decision-making and resource allocation. This review explores the role of post-project financial auditing as a continuous improvement tool in SMEs, highlighting its ability to enhance financial discipline, improve cost control, and promote long-term financial sustainability. By examining key aspects of project revenues, expenditures, and profitability, post-project financial audits provide insights into financial performance that are essential for strategic planning. These audits help identify budget deviations, resource misallocations, and cost inefficiencies, enabling SMEs to adjust future financial planning and project management practices. In doing so, audits contribute to refining budgeting processes, promoting data-driven decision-making, and reducing financial risks in subsequent projects. The review also emphasizes the benefits of post-project auditing in fostering a culture of financial responsibility within SMEs. Through the audit process, SMEs can strengthen internal controls, monitor compliance with financial regulations, and ensure that project outcomes align with organizational financial goals. Additionally, the integration of audit findings into future financial strategies enables SMEs to continuously improve their profitability, mitigate risks, and enhance overall financial stability. Despite the clear advantages, challenges such as resource constraints, data management issues, and limited audit expertise can hinder the adoption of post-project audits in SMEs. The review offers practical recommendations to address these challenges, advocating for the use of scalable audit frameworks, digital tools, and ongoing staff training to support effective auditing practices. Ultimately, post-project financial auditing represents a vital mechanism for driving continuous improvement and ensuring the financial resilience of SMEs in an increasingly competitive marketplace.