The goals of the research is to known the effect of profitability, asset structure, and firm size on firms' capital structure in the property and real estate industry that have liston the IDX (Indonesia Stock Exchange) from 2021 until2023. The research utilizes a quantitative approach, integrating secondary data from corporate financial statements and the IDX website. The sampling strategy is a purposive sampling method, picking 16 companies from a total population of 93. To analyzing the date withmultiple regression analysis using SPSS version 25. The findings demonstrate that profitability and asset composition substantially negatively influence capital structure, implying that firms with more profitability and asset holdings are inclined to utilize less debt financing. Nonetheless, business size doensn’texhibit a substantial impact on capital structure. Nonetheless, when examined concurrently, profitability, asset structure, and firmsize impact capital structure decisions.

Keywords: profitability, asset structure, firm size, capital structure, real estate, property.