The thesis is focused on the development of investment patterns of the sectoral point of view in comparison with the EU and selected member countries. The aim of the thesis is to bring the industrial structure of gross fixed capital formation in the Czech Republic and compare the founded results with those for the European Union and selected EU member states. The theoretical part deals with basic facts about investment, what they represent, how they are distinguished and what is the importance in the national economy. The practical part deals with the structure of investments in the Czech Republic in terms of material and sectoral in the form of graphs and tables. Then there is noted the comparison of the Czech Republic data with the EU and selected member countries in the shares of total investment to GDP, gross fixed capital formation by industry structure and investment by institutional sectors.

我國自民國87年起實施「未分配盈餘加徵10%營所稅」，已有多位學者研究兩稅合一稅制與企業投資之關係，但針對未分配盈餘加徵稅負對企業投資意願的影響，迄今尚未有以『實際加徵之稅負資料』進行實證研究探討。本研究以未分配盈餘加徵稅負對企業投資支出之影響為主軸，並進一步分析當『產業』不同或『公司規模』大小不同時，未分配盈餘加徵稅負與企業投資的關係。除此之外，將企業投資分為固定資產總額投資、固定資產淨額投資及研究發展支出。 實證結果發現：(1) 未分配盈餘加徵稅負與固定資產投資及研究發展支出之迴歸係數為負值，且當投資為固定資產投資總額及固定資產投資淨額時，達統計上的顯著性。且由數據發現，電子產業研發費用較非電子產業高出5倍之多，因其仰賴高額研發支出，故需較多保留盈餘以因應投資需求；實施未分配盈餘加徵稅負後，電子產業實際加徵之未分配盈餘稅負較非電子產業為高，因此當政府增加未分配盈餘加徵稅負之制度，對電子產業衝擊較大。 (2) 由樣本超過200間的五大產業中發現，其投資支出與未分配盈餘加徵稅負的迴歸係數大致呈負值，且電機機械業、電子產業及建材營造業的迴歸結果達統計上的顯著性。(3) 本研究將企業依總資產規模不同分為四大組，發現當公司規模最小與公司規模最大時，此兩個組的企業，未分配盈餘加徵之稅負愈高，其固定資產投資之金額愈低。上述未分配盈餘稅負與投資的關係，可發現多數企業視未分配盈餘租稅成本為重要之投資決策考量因素，此一研究結果可提供政府制定稅務政策之參考。