Islamic boarding schools as educational institutions in Indonesia have contributed to national education in terms of the contribution of knowledge and figures in government. On the other hand, the limitations of pesantren funding sources must be solved by good entrepreneurial management so that pesantren are independent of donors or the government. This research takes place at Tahfidzul Qur'an Salsabila Islamic Boarding School, Tegal, which has implemented entrepreneurship in pesantren management. The results of this study indicate that various kinds of entrepreneurship are carried out, including citrus garden agro-tourism, catfish farming, coffee cafes, ground coffee products, pesantren stalls, and snack products from dages sticks. Second, the existing and implemented entrepreneurial management follows management rules, namely planning, organizing, implementing and monitoring as steps taken so that entrepreneurship can still be carried out correctly. The three entrepreneurial contributions to education costs include paying pesantren asatidz, to pay for electricity for Islamic boarding schools every month, and financing orphans and orphans, as well as being allocated to fund poor students.