The architecture of a sound tax system should be designed to enhance government revenue, minimize borrowing requirements, and simultaneously avoid discouraging economic activity. Tax exemptions constitute a legal mechanism that exempts specific income and capital sources from temporary or permanent tax obligations. Primarily employed as a tool to implement government support policies, tax exemptions aim to channel societal liquidity towards high-risk, non-profit, or low-yield ventures. Reducing dependence on oil revenues, a critical strategy for achieving sustainable economic development and growth, necessitates reforms to the existing inefficient tax system. Establishing a clear, stable, and predictable legal and regulatory framework for the tax system, including transparent and efficient tax exemptions and incentives, is paramount for fostering sustainable investment. Effective tax exemptions exhibit three key characteristics: they are targeted, conditional, and time-bound. However, the proliferation of numerous tax exemptions within the Iranian economy, coupled with the observed inefficiency across various sectors, including agriculture, has presented several challenges. These include: diminished government tax revenue; limited access to accurate financial and economic data pertaining to tax-exempt activities; increased scope for tax avoidance and evasion; and dispersed tax exemptions across numerous laws, leading to a surge in requests for the utilization or extension of exemptions. This research investigates the concept of tax exemptions, identifies the types of exemptions approved within existing laws and regulations, and proposes recommendations for their effective organization.