CAJ | 학술논문

政府财政政策对经济增长和社会福利的影响，是经济增长理论和宏观公共财政理论研究的重点，已经有大量的研究。本文在一个资本积累与创新相互作用的框架下内生化劳动力供给，假设政府通过征收平滑的收入税为公共支出融资，并且将政府公共支出区分为资本性支出和研发性支出，从而考察了税收和财政支出结构对经济增长的影响及其作用机制。研究发现，当政府通过征收收入税为生产性公共支出融资时，收入税税率与经济增长率之间存在一个倒U形的关系，从而回到了Barro（1990）的结论，尽管本文强调的政府财政政策作用于经济增长的机制与Barro（1990）差别较大；在基准经济（benchmark economy）的参数环境下，财政支出结构与经济增长率之间存在一个倒U型关系，从而经济中存在一个最优的财政支出结构。
정부재정정책대경제증장화사회복리적영향，시경제증장이론화굉관공공재정이론연구적중점，이경유대량적연구。본문재일개자본적루여창신상호작용적광가하내생화노동력공급，가설정부통과정수평활적수입세위공공지출융자，병차장정부공공지출구분위자본성지출화연발성지출，종이고찰료세수화재정지출결구대경제증장적영향급기작용궤제。연구발현，당정부통과정수수입세위생산성공공지출융자시，수입세세솔여경제증장솔지간존재일개도U형적관계，종이회도료Barro（1990）적결론，진관본문강조적정부재정정책작용우경제증장적궤제여Barro（1990）차별교대；재기준경제（benchmark economy）적삼수배경하，재정지출결구여경제증장솔지간존재일개도U형관계，종이경제중존재일개최우적재정지출결구。
The impact of fiscal policy on economic growth has been the focus of both the economic growth theory and the macro public finance theory, and there have been a large number of studies which examine whether fiscal policy could make a distinct contribution to economic growth. This paper endogenizes labor supply in an endogenous growth model with capital accumulation and innovation, and we assume that the government imposes flat-rate income taxation to finance for the government expenditure. We try to test the impact of fiscal policy on economy and detect its transmission mechanism. We conclude that there exists an inverted-U relationship between the income tax rate and the growth rate, which coincides with Barro （1990）＇s plausible conclusion, though the growth mechanisms are quite different between these two papers. In addition, there exists an inverted-U relationship between the structure of the public expenditure and the growth rate in the benchmark economy. Therefore, we could find the optimal structure of public expenditure in reality.