Satisfactory financial performance could contribute to the attainment of a business's financial sustainability goal. With the low sustainability record of rural banks in the Philippines, this study intended to determine the financial performance and sustainability of these institutions as well as to establish the relationship between the two variables. A descriptive and correlational research design was employed and the survey method was administered. The participants of the study consisted of fifty-nine (59) rural banks in the CALABARZON Region in the Philippines. The questionnaire measures the financial performance of the rural banks using the CAMEL rating analysis, the financial sustainability as proposed by Balasubramanian and Balaji (2022), and the correlation analysis using Spearman-Rho. Findings revealed that rural banks recorded satisfactory performance in terms rural banks capital adequacy, management efficiency, earnings ability, and liquidity. However, they are found to be not performing well regarding asset quality. Rural banks in Region IVA also perceive themselves as highly financially sustainable. A significant correlation was established between capital adequacy, asset quality, and financial sustainability. It is suggested that rural banks need to recalibrate the policies and strategies on credit risk management based on marketing research to improve their asset quality performance.