根据宏观公共财政理论,政府可以通过税收、货币和发行债券融资,不同融资方式对经济的影响机制和作用效果差别很大。笔者构建了一个同时包含税收、货币和债券的内生增长模型,探讨税收政策、货币政策和债券作用于经济增长的传导机制和作用效果。在标准经济的参数环境下,笔者通过定量分析估算了税收、货币与债券的经济增长效应与社会福利损失。在政府支出外生给定的前提下,笔者从税收、货币与债券相互作用的视角探讨不同政策工具的融资效率。研究发现,资本所得税的经济增长效应和社会福利损失最大,劳动所得税次之,消费税、货币以及债券的扭曲很小。本文的结论具有较强的政策含义,相对于资本所得税和劳动所得税而言,通过征收消费税、发行货币或债券为政府支出融资更有利于促进经济增长和改善社会福利。
According to the macro public finance theory, government could rise fund by taxation, money issuing bond, and their effect on economy are quite different. This paper presents an endogenous growth model with taxation, monetary policy and bond, and we explore their transmission mechanism and effect on the economy. With the assumption that government expenditure is given, this paper estimates growth effect as well as social welfare cost of these tools through calibration and numerical simulation. It is found that the capital income taxation has the largest growth effect and social welfare cost, the second is the labor income taxation, whereas the distortion of consumption taxation, money and bond is relatively small. The conclusion has important policy implication, and government should levy revenue from consumption taxation, money issuing and bond issuing labor income. rather than levy revenue from capital income and