The use of information systems to help organizational performance is increasingly needed. With the sophistication of information technology, has enabled the development of information systems more reliable. Information is one of the most important resources in modern management. PT Indocement Tunggal Prakarsa Tbk. have complex activity problems, such as manual data input through paper media or employee forms. The distance between the mining and the administration office is also a problem for input data. Employee at PT Indocement Tunggal Prakarsa Tbk. totaling more than 10,000 employees. Stacking data in paper files is not efficient if the officer performs the data processing. The search process also requires a relatively long time and if the data is damaged, then PT Indocement will lose data. With the problems experienced by PT Indocement Tunggal Prakasa Tbk. it is necessary to input data entry methods that can be done wherever the employee is located. The problem can be overcome with the utilization and application of IT is by making the Information Systems Personnel Administration (PORTAL) at PT Indocement. PORTAL can provide services to all existing personnel because inputing data can be done from each location of employees placed. Based on the results of black box testing on personnel-based personnel administration application at PT Indocement Tunggal Prakasa Tbk. it can be concluded that the application simplify the administrative activities. This can support the performance of employees of PT Indocement Tunggal Prakasa Tbk.