Private nonprofit four-year institutions have been increasing the amount of institutional aid provided to students, in the pursuit of enrollment and revenue management objectives and goals. Most of this aid is being funded using the institution's operating funds. This study investigated the relationship between unfunded institutional aid and net tuition revenue, controlling for institutional characteristics and financial factors. The study was based on panel data analysis using Delta Cost Project data from 2006 to 2015. The findings of this study show that the relationship between unfunded institutional aid and net tuition revenue varies by Carnegie classification. Private nonprofit Bachelor's institutions can increase net tuition revenue using unfunded institutional aid, but this relationship has a peak of 39%. This study also reviewed other factors that are associated with increasing net tuition revenue. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]