Accounting Progress
Vol. 5 No. 1 (2026): Accounting Progress Edisi Juni 2026

Analisis Sistem Pengendalian Internal Pembelian Bahan Baku Pada PT. Inalum

Rapat Piter Sony Hutauruk (Sekolah Tinggi Ilmu Ekonomi Bina Karya)
Daniel Collyn (Sekolah Tinggi Ilmu Ekonomi Bina Karya)
Rika Surianto Zalukhu (Sekolah Tinggi Ilmu Ekonomi Bina Karya)



Article Info

Publish Date
30 Jun 2026

Abstract

This study aims to analyze the implementation of the internal control system for raw material purchasing at PT Indonesia Asahan Aluminium (INALUM). Internal control in the raw material purchasing process plays an important role in maintaining the effectiveness of company operations, minimizing the risk of errors and fraud, and ensuring the continuity of the production process. This study employed a qualitative approach with a descriptive method. Research data were obtained through observation, interviews, and documentation. Interviews were conducted with parties directly involved in the raw material procurement process, namely the Material Management Section and the Procurement Section. In addition, this study utilized supporting documents such as Standard Operating Procedures (SOP), business process documents, and company reports. The results indicate that the internal control system for raw material purchasing at PT INALUM has been implemented properly and systematically. The raw material procurement process is carried out through several stages, including the preparation of Purchase Requisition (PR), tender process, technical and business evaluation, negotiation, issuance of Purchase Order (PO), contract preparation, goods receipt, and payment. The company has also implemented segregation of duties, authorization systems, access restrictions, and the use of SAP and Ipro systems to support inventory control and raw material procurement processes. Furthermore, the company applies a risk mitigation strategy through Ad Hoc transactions to address raw material supply constraints under certain conditions. Based on the evaluation results, the internal control system for raw material purchasing at PT INALUM is in accordance with internal control principles and is capable of supporting the effectiveness and efficiency of the company’s raw material procurement process.

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Journal Info

Abbrev

ap

Publisher

Subject

Economics, Econometrics & Finance

Description

Accounting Journal merupakan Jurnal yang memuat isu-isu di bidang Akuntansi dan Keuangan. Jurnal Akuntansi diterbitkan 2 kali dalam setahun pada Bulan Juni dan Bulan Desemebr . Jurnal ini diterbitkan oleh Sekolah Tinggi Ilmu Ekonomi Bina karya. Jurnal yang di-submit ke Jurnal Akuntansi akan melalui ...