The company where the research is carried out is a small and medium enterprise engaged in fashion with a make to stock system. The problem in these small and medium enterprises is the accumulation of inventory in raw material warehouses. In this study, the author carried out forecasting calculations using data from the past and using the SES, DES, SMA, and DMA methods. By looking at the error rate in each forecast, the smallest error is the SES method α=0.1 with MAPE of 6.4%, MSE of 2338352.9, MAD of 392.5. Then the calculation of MPS for raw materials is carried out. RCCP calculation using 3 methods, namely CPOF, BOLA and RPA. After that, a safety stock calculation is carried out for each raw material.