The stock valuation of PT Panca Budi Idaman, Tbk. (PBID), an Indonesian plastic packaging manufacturer, is evaluated using the absolute and relative valuation. The absolute valuation is based on Discounted Cash Flow (DCF) method. In relative valuation, PBID is compared to its peers, which in this study are IPOL, PDPP, and TRST. Indonesia’s significant economic growth and the vital role of the plastic industry are noting strong demand for plastic packaging despite environmental challenges and regulatory pressures. Financial performance from 2017 to 2023 is assessed through profitability, liquidity, and solvency ratios, demonstrating PBID’s efficient operations and robust financial health. Future cash flows are projected, discounted using PBID’s Weighted Average Cost of Capital (WACC), and the terminal value is calculated. The intrinsic value is estimated at IDR 3,987 per share, indicating undervaluation compared to the current price of IDR 1,325 per share. Relative valuation compares PBID to industry peers using EV/EBITDA, P/E, and P/B ratios, reinforcing the undervaluation finding. Investment recommendations suggest PBID’s stock as a buying opportunity due to its strong market position and favourable valuation metrics.