Abstract: The purpose of this study was to determine how much efficiency and feasibility from the design of collaborative procurement strategy on three subsidiaries from PT Induk that runs in gas sectors. The methodology used in this study is Cost-Benefit Analysis approach, with criteria of calculation Present Value (PV), Future Value (FV), and Benefit-Cost Ratio (B/C Ratio). This study found that the procurement process at the three subsidiaries with the classification of materials/ parts is a redundant process and inefficient. A calculation in this study proves that the collaboration which has been done by three subsidiaries is more efficient if implemented with the collaboration procurement strategy on the classification of material/ parts by specifying the manufacturer and the right quantity so as to reduce the cost it does cost sharing. The result B/C ratio showed 8,19 indicating this collaboration strategy should be feasible.