标题： 严格气候政策的财政影响 显示英文标题

标题： The fiscal implications of stringent climate policy

摘要： 符合2015年巴黎协议目标的严格气候政策将带来重大的财政挑战。 到2050年将二氧化碳排放量减少95%或更多，将产生占国内生产总值7%（1-17%）的碳税收入，这是目前全球税收收入的一半。 在较贫穷的地区，收入相对较大。 对二氧化碳封存的补贴将达到国内生产总值的6.6%（0.3-7.1%）。 这些数字是保守的，因为它们是使用假设最佳气候政策实施的模型估算的，并忽略了筹集收入的成本。 如果排放目标被放松，财政挑战将迅速缩小。 显示英文摘要

摘要： Stringent climate policy compatible with the targets of the 2015 Paris Agreement would pose a substantial fiscal challenge. Reducing carbon dioxide emissions by 95% or more by 2050 would raise 7% (1-17%) of GDP in carbon tax revenue, half of current, global tax revenue. Revenues are relatively larger in poorer regions. Subsidies for carbon dioxide sequestration would amount to 6.6% (0.3-7.1%) of GDP. These numbers are conservative as they were estimated using models that assume first-best climate policy implementation and ignore the costs of raising revenue. The fiscal challenge rapidly shrinks if emission targets are relaxed.