Economic independence is a structural challenge faced by most Islamic boarding schools (pesantren) in Indonesia, including those that have expanded into large-scale Islamic educational institutions. This study aims to analyze the fundraising strategies implemented by Pondok Pesantren Darunnajah Ulujami, South Jakarta, in building sustainable economic independence, identify the key success factors, and formulate an integrative model that can serve as a reference for other pesantren. The research employs a qualitative approach with a single instrumental case study design. Data were collected through in-depth interviews with 18 key informants, structured observations, and comprehensive document analysis, and subsequently analyzed using the interactive model of Miles, Huberman, and Saldaña. The results reveal four pillars of integrated fundraising strategies implemented by Darunnajah: (1) asset-based productive waqf optimization, encompassing properties, agribusinesses, and commercial facilities; (2) systematic and accountable management of Zakat, Infaq, and Alms (ZIS); (3) development of autonomous business units under separate corporate legal entities; and (4) strategic partnerships grounded in alumni social capital and corporate networks. Three primary success determinants were identified: the transformational leadership of the pesantren leaders, financial governance transparency based on Islamic accounting standards, and the strength of the social capital within the Darunnajah alumni network scattered across various strategic sectors. These findings yield the Darunnajah Pesantren Fundraising Model (MFPD) as a theoretical contribution to the field of Islamic education management, along with practical implications for the policy development of national pesantren economic strengthening.