This thesis uses a personal method to identify investment benefits in Austrian revenue tax law ("Einkommensteuergesetz" and "Körperschaftsteuergesetz") and compares the accounting regulations for tax purposes with the accounting regulations according to ?Unternehmensgesetzbuch? (Corporate Law Book).The identification is achieved in two sequential steps: Firstly, the terms "Investition" and "Steuervergünstigung" are defined so as to determine which statutory rules can be seen as Investment benefits. This is accomplished by combining the ?Investition? term according to Blohm/Lueder, who used a determination based on the investment object and the "Steuervergünstigung" term according to Lang, who distinguishes them in real and unreal benefits. For this reason, special attention is paid to the underlying political motivations and goals since they serve to distinguish between real and unreal benefits. Secondly, the effects and functions of investment benefits are discussed. After the identifying process is finished, the statutory rules are classified according to the underlying investment object. A distinction is made between investment benefits on fixed assets, human capital and research and development. The investment benefits are shown individually and the effects and requirements are of each rule are discussed. Thereby a look at the historical development of the regulations will be thrown, which allows gaining insights into the motivations of the legislator. To provide an additional focus on business administration, the evaluation and accounting is explained, with respect to the regulations of accounting for tax purposes and for company purposes.