In this paper, we address the management’s decision making process and examine the effect of accounting information system (AIS) in PARS GARMA holding organization in making sound and effective decisions and inform the reader on how AIS influences on the management decisions in 6 major perspectives including quality, accuracy, economic, validity, speed and on time concepts. The major source of data to this research is primary data through the administration of questionnaires. Regression and correlation analysis was used for the data analysis. The findings show that accounting information system had a significant and positive role in PARS GARMA holding management decisions process in several perspectives but AIS had no significant impact on speed of decision making.