This study aimed at determining the utilization of performance-based assessment as the basis in developing the numeracy intervention program for grade four learners. This study employed the non-experimental descriptive-correlation research design in investigating the research problem. It is descriptive because the data are presented in quantitative descriptions on the “Utilization of Performance-based Assessment in Mathematics: Basis for Numeracy Remediation Program for Grade Four Learners. According to Good (2005), this method of research shows merely description of tasks presenting the conditions regarding the nature of the group of persons or class of events that involved procedure of analysis, classification, and measurement. It involves varied information regarding the current or present condition (Deauna, 2005). This study was conducted in all public elementary schools in Binugao district, Davao City. The respondents of this study were the 5 grade four teachers to assess the 250 grade four learner in the research locale who were the subjects of this study and whose numeracy was assessed using performance-based assessment. Moreover, simple random sampling procedure was used considering the enormous number of the grade four learners in the district while at the same time simple sampling procedure was used in determining the number of teacher who will participate in the study. This study revealed that teachers most of the time used performance-based assessment in assessing learning outcomes in mathematics of the grade four learners. This also means that teachers are confident in using performance-based assessment as it monitors academic progress of the child in mathematics subject.