Students' loans in financing higher education in Tanzania have been subjected to many researches. However, less information is available on how the success of students' loans in financing higher education can be revealed. Therefore the purpose of this study is to examine the factors indicating the success of students' loans in financing higher education in Tanzania. Using data collected from a larger cross sectional survey in Tanzania, this study found that students loans in financing higher education in Tanzania is successful as it increases enrollment of students in higher learning institutions, the study also revealed that Higher Education Students' Loans Board (HESLB) is employing enough efforts to recover loans granted to loans beneficiaries since 1994 as well as the guidelines and criteria for granting loans was found to be satisfactory. The study recommend that, enrollment decision making has been affected by other factors other than a successful students' loan financing, these factors includes political factors, economical factors, family influences and school impacts. Therefore for better understanding of the successful students' loans financing in Tanzania these factors need to be considered too. To ensure more effective recovery of already issued students loans since 1994, HESLB is recommended to institute a sound financial management which include setting appropriate interest rates to cover inflation in order to maintain the capital value of the loan fund and covering administrative costs as well as presence of adequate legal framework to ensure that students' loans are legally enforceable to reduce default among loan beneficiaries. Guidelines and criteria should be improved to be more effective such as the inclusion of economics factors to measure the economic ability among loans applicants for instance presence of collateral security.