This work is intended to reflect the income tax assessment of income from private real estate sales. The historical development from the speculative tax to the introduction of the "ImmoESt" is described. An essential part of this work is the clarification of the individual liberation provisions resulting from the law, the judicature and the literature. Furthermore, it should be clarified how the "ImmoESt" according to the provisions of the Income Tax Act 1988 is calculated and what function party representatives in private real estate sales. In addition, the sales tax treatment of property sales in connection with the tax option under § 6 Abs 2 UStG 1994 and input tax corrections according to § 12 UStG 1994 and the associated "advantages and disadvantages" are discussed in detail.