In the context of a worsening environmental crisis and the urgent need for a transition to sustainable development, tax reforms have emerged as a vital mechanism for stimulating green entrepreneurship. This paper provides an in-depth analysis of global trends in tax reforms aimed at supporting environmentally responsible businesses and examines the regional variations in their implementation. Tax incentives have proven to be effective tools for encouraging companies to adopt eco-friendly practices, invest in renewable energy, and develop innovative solutions that address pressing environmental challenges. This study categorizes various forms of tax incentives, such as tax credits, exemptions, and reductions for businesses engaged in sustainable practices, including renewable energy production, waste management, and sustainable agriculture. The paper highlights successful case studies from diverse countries, showcasing how tax reforms have effectively driven the growth of green entrepreneurship. For instance, nations such as Germany and Sweden have implemented robust tax policies that incentivize renewable energy investments, resulting in significant advancements in green technology and job creation. Similarly, developing countries, like Kenya and India, are leveraging tax incentives to foster eco-entrepreneurship, balancing economic growth with environmental protection. Furthermore, this study delves into the challenges and opportunities associated with these tax reforms. While many countries are adopting fiscal measures to stimulate green entrepreneurship, the effectiveness of these reforms can vary significantly due to factors such as economic capacity, political will, and regional environmental priorities. Developing nations often face constraints in their ability to implement comprehensive tax incentives, while developed countries may benefit from more substantial financial resources to support such initiatives.