Abstract
Inventory plays an important role in the company's operational activities, it is necessary to do inventory management in order to minimize losses caused by the large inventory costs. This research is conducted at UD. Sinar Jaya, aims to determine the performance of product inventory management and whether it’s efficient or not. Research data are obtained through interviews and observations. Descriptive analysis technique is used, which describes systematically several stages starting with ABC analysis, EOQ calculation, safety stock calculation, re-order point calculation, maximum inventory calculation, inventory turnover calculation, and comparing the total inventory cost between the method applied by the company with the EOQ method. Results show that product inventory management performance is not efficient. This is indicated by the total cost of inventory incurred using the company method in 2019 amounting to IDR 43,058,137. The product inventory management system that should be carried out is to classify products with ABC analysis, then determine EOQ of 1,208 units, determine safety stock of 518 units, and determine the re-order point of 1,099 units for each classification at unit A, so that the total cost of inventory incurred is only IDR 32,716,517 or 24.02 % lower than the actual application of company methods.
 Keywords: ABC analysis, EOQ, inventory costs
Highlights
Inventory plays an important role in the company's operational activities
do inventory management in order to minimize losses caused by the large inventory costs
This research is conducted at Usaha Dagang (UD)
Summary
METODE PENELITIAN Penelitian ini merupakan “studi kasus secara menyeluruh mengenai persediaan pada UD. Objek yang digunakan dalam penelitian ini adalah manajemen persediaan produk dagangan di UD. Sinar Jaya dinilai penting dalam melakukan manajemen persediaan karena karakteristik produk yang dijual sangat beragam dengan fluktuasi harga yang tinggi (ekstrem) serta beragamnya nilai produk yang dimiliki. Sumber primer yang digunakan adalah tentang kebijakan perusahaan dalam hal persediaan produk yang diperoleh dari hasil wawancara pemilik UD. Produk perusahaan ini sudah berkembang dengan menjual beragam merek dan jenis bahan bangunan yang memiliki fluktuasi harga yang cukup tinggi (ekstrem) antara produk yang satu dengan produk yang lainnya. Metode yang digunakan perusahaan dalam menentukan kuantitas persediaan masih menggunakan pencatatan manual dibantu dengan pengamatan pemilik usaha dan pertimbangan karyawan gudang mengenai produk mana saja yang banyak diminati pelanggan
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