World-historical analyses often view the “Asian” empires that survived into the twentieth century (the Russian, Qing, and Ottoman empires) as anomalies: sovereign “archaic” formations that remained external to the capitalist system. They posit an antagonistic relationship between state and capital and assume that modern capitalism failed to emerge in these empires because local merchants could not take over their states, as they did in Europe. Ottoman economic actors, and specifically the sarraf as state financier, have accordingly been portrayed as premodern intermediaries serving a “predatory” fiscal state, and thus, as external to capitalist development. This article challenges these narratives by uncovering the central role of Ottoman sarrafs, tax-farmers, and other merchant-financiers in the expanding credit economy of the mid-nineteenth century, focusing on their investment in the treasury bonds of Damascus. I show how fiscal change and new laws on interest facilitated the expansion of credit markets while attempting to regulate them by distinguishing between legitimate interest and usury. I also discuss Ottoman efforts to mitigate peasant indebtedness and the abuse of public debt by foreigners, amid the treasury bonds’ growing popularity. In this analysis, global capitalism was forged in the encounter between Ottoman imperial structures, geo-political concerns, and diverse, interacting traditions of credit, while the boundaries between public and private finance were being negotiated and redefined. Ultimately, Ottoman economic policies aimed to retain imperial sovereignty against European attempts to dominate regional credit markets—efforts often recast by the latter as “fanatical” Muslim resistance.