本文建構一個中間財市場不完全競爭的內生成長模型，探討租稅、政府支出與中間財市場競爭程度對就業、經濟成長與所得分配的影響。本文發現，不考慮規模報酬下，政府調降勞動所得稅、消費稅與提高政府支出，將提升就業與經濟成長率，對於所得不均度的影響則不確定。相反地，資本利得稅的調升，不利於就業與經濟成長率，但會降低所得不均度。在不考慮規模報酬情況下，愈競爭的中間財市場競爭程度有助於提升就業與經濟成長率，所得不均度的影響則不確定。在考慮規模報酬情況下，中間財商品市場競爭程度對於就業、經濟成長率與所得不均度的影響皆不確定。 This paper develops an endogenous growth model with imperfect competition in intermediate good markets to analyze the effects of taxes, government spendings and the degree of competition in intermediate good market on employment, economic growth and income distribution. Regardless of the increasing returns of the variety, we find that a decrease in the labor income tax or the consumption tax and an increase in the government spendings raise the employment and economic growth rate, however, they have ambiguous effects on income inequality. In contrast, an increase in the capital tax will reduce the employment and economic growth rate, but it decreases income inequality. In the case with no considering the increasing returns of the variety, an intensive competition intermediate good markets will have positive effects on employment and economic growth rate however they have ambiguous effects on income inequality. In the case with considering the increasing returns of the variety, the degree of competition in intermediate good markets has ambiguous effects on employment or the economic growth rate and income inequality.
