From the 1880s onwards, emlâk-i hümayûn became a legal category that designated the lands Sultan Abdülhamid II (r. 1876-1909) acquired as his personal private property under the Privy Purse. Although the concept of emlâk-i hümayûn predated enthronement of Sultan Abdülhamid II, Hamidian officials relied on this legal category to build an imperial policy across Ottoman domains and establish administrative institutions. This property regime associated with emlâk-i hümayûn sought to protect Ottoman sovereignty and to provide revenue for the Privy Purse -- among other reasons. While scholars of the Ottoman Empire produced extensive scholarship on the legal text of the 1858 Land Code and its implementation in the provinces, studies on the legal framework of Abdülhamid II’s property ownership or the administration of these properties remain very limited. This paper will first explore the kinds of properties that the category of emlâk-i hümayûn encompassed by focusing on the revenues registered in the Privy Purse budgets in the Hamidian period. Thereby, I will shed light on the meaning of this legal category through which Abdülhamid II built a property regime. Second, I will demonstrate that Abdülhamid II not only sought to collect revenues from landed estates with agrarian production, but the Sultan, in his capacity as a private entrepreneur, also aimed to empower himself from mineral extraction, animal breeding, and even industrial production. Furthermore, no scholar to date fully explored the financial repercussions of this property regime. To shed light on this invisible income that Abdülhamid II accrued under the Privy Purse, this paper will present a study of budgets of the Privy Purse. I will discuss the revenues that Abdülhamid II accrued from emlâk-i hümayûn for financial years between 1880/1881 and 1905/1906, which are absent from state budgets. Through a comparison of state and emlâk-i hümayûn revenues during the Hamidian period, I will demonstrate that this property regime associated with Sultan Abdülhamid II was the cornerstone of Hamidian rule.