This study aims to determine the effect of Capital Structure and Sales Growth on Firm Value at PT Bank Central Asia Tbk for the period 2016–2025. Capital Structure is proxied by the Debt to Equity Ratio (DER), Sales Growth is measured using the sales growth formula, and Firm Value is proxied by Price to Book Value (PBV). This research uses a quantitative method with secondary data obtained from the annual financial reports of PT Bank Central Asia Tbk. Data analysis techniques include descriptive statistical analysis, classical assumption tests, multiple linear regression analysis, coefficient of determination, and hypothesis testing through partial test (t-test) and simultaneous test (F-test). The results show that Capital Structure (DER) has no significant partial effect on Firm Value (PBV) with a significance value of -0,23 < t-table 2,364 and a significance value of 0.818 > 0,05. Sales Growth also has no significant partial effect on Firm Value (PBV) with a significance value of 1,259 < t-table 2,364 and a significance value of 0.248 > 0,05. Simultaneously, Capital Structure and Sales Growth have no significant effect on Firm Value with a significance value of 0.930 < F-table 4.74 and a significance value of 0.438 > 0,05, and a coefficient of determination (R Square) of 0.210 or 21%. This indicates that the firm value of BCA is more influenced by other factors outside the scope of this study.