In 1683, the defeat of the Ottomans in Vienna led to the emergence of a Crusader alliance as Sacra Ligua in Europe. The Ottoman Empire started to lose ground in Hungary and Morea in the war with the alliance. In 1686, because of the great losses, a general levy was declared. Participating in jihad then became fard (a must in Islamic law) for all Muslims and a kind of mobilization was implemented. The general levy imposed financial and military obligations on the population. In this context, in 1688, a new tax was enacted called nefir-i amm bedeli. In this study, the Ottoman Empire's effort to increase financial income via nefir-i amm bedeli has been analyzed. The focus of the study is nefir-i amm bedeli's financial contribution to the sustainability of the war and the reflections of the society against the demands of the state. The investigations show that the tax resulted in a revenue of 3.28% of the state's total income, and the society did not show great opposition during the collection of this tax.