This study delves into the impact of investment incentives on regional development and economic growth in Turkey. It provides a comprehensive overview of the investment incentive system introduced in 2012, categorizing regions based on development levels and offering various incentives such as tax exemptions, reductions, and social security support. The research investigates the relationship between investment incentives, public expenditures, regional differences, and economic growth. Through a thorough examination, the study aims to understand how the current incentive system addresses regional disparities and promotes balanced economic growth. The literature review explores international perspectives, including China and Italy, providing insights into the effectiveness of tax incentives on R&D investment and macroeconomic performance. The study also analyzes the European Commission's report on tax incentives for venture capital and business angels. The results and discussion section outlines the investment incentive framework in Turkey, emphasizing regional, priority, large-scale, and strategic schemes. The research considers twelve investment categories, each supported by specific incentive measures. The conclusion emphasizes the importance of aligning incentives with regional needs, fostering equitable development, and promoting strategic sectors. It highlights the significance of quasi-tax supports, VAT exemptions, and interest subsidies in encouraging investments. The employment and income tax withholding supports, especially in the 6th region, are recognized for their contribution to reducing unemployment. The study concludes by underscoring the need for continuous evaluation and adaptation of incentive schemes to address evolving economic challenges.