The Impact of Green Taxes on the Carbon Emission Efficiency of China’s Construction Industry

China is currently in a stage of high-quality economic development, but the high energy consumption and high pollution production methods of the construction industry are no longer adaptable to the country’s economic development goals in the new era. As one of the important tools for the government to regulate high-quality advancement, taxation plays a vital role in the green development of the construction industry. This research uses panel data of 26 provinces in China from 2008 to 2017 and constructs a multiple intermediary effect model to conduct an empirical test on the impact of green taxes on the carbon emission efficiency of the construction industry and its mechanism. The results show that green taxation promotes carbon emission efficiency by accelerating the promotion of fixed capital investment in this industry, accelerating the flow of technological elements and technological research and development. This study further verifies that green taxation and carbon emission efficiency present an inverted U-shape relationship, and that the path mechanism of green taxation, fixed capital investment and technological progress-improving carbon emission efficiency of the construction industry has an intermediary effect. On this basis, suggestions are offered to rationally adjust the corporate tax burden, optimize the industrial structure, and actively guide the green transformation of the construction industry.