本文探討「促進產業升級條例」中，有關研究發展之投資抵減獎勵對廠商的研究發展支出、研究績效以及經濟效益的影響。實證設計係根據廠商問卷調查資料，透過線性結構關係模式 (LISREL) 來檢視政府獎勵措施的成效。實證結果顯示：政府的抵減獎勵對業者之研究發展支出有顯著的誘發效果，同時，廠商的研究發展努力對其研究績效 (新產品及新技術產出) 以及經濟效益 (含產品附加價值及投資報酬率) 也有顯著的正向影響。上述結果反映出，在不考慮政府稅收損失的前提下，政府提供抵減獎勵，並發揮誘導產業界加強研究發展活動時，必然有助於廠商開發新產品、新技術以及產品附加價值的提高，進而達到促進產業升級的目標。

The purpose of this paper is to examine the impact of government investment tax credits on firms’ research and development (R&D) activities and research efficiency as well as to assess their overall economic benefits. This paper conducts a survey of Taiwanese manufacturing industries to investigate the effects of R&D tax credits. Our analysis, using the Linear Structural Relation model (LISREL), suggests that government investment tax credits generate a positive impact on firms’ R&D expenditure. Furthermore, we also find that there exists a positive linkage between firms’ R&D expenditure and their products’ value-added.