Objective: The study’s goal is to develop a highly appropriate, fast, precise, and validated reverse-phase high-performance liquid chromatography (RP-HPLC) approach that indicates stability for the estimation of tepotinib in pharmaceutical dosage form and bulk, in accordance with ICH recommendations. Method: The components were separated by chromatography using a Phenomenex Kinetex XB-C18 (150×4.6 mm, 5μ) column. The absorbance was measured at 272 nm, and the flow rate was 1.0 mL̸min. The International Council for Harmonisation (ICH) states that checks were made for linearity, precision, accuracy, system appropriateness, specificity, and protocol robustness. Results: Tepotinib was shown to have a retention period of 3.4 minutes. The results showed that the linearity ranged from 5 to 25 μg/mL (r2 = 0.9993), and the percentage mean recoveries for tepotinib’s accuracy and precision fell within the range of (%RSD˂ 2). It was discovered that the Limit of Detection (LoD), and Limit of Quantitation (LoQ) were, respectively, 0.429 and 1.3 μg/mL.