Banks are significant in the economic life of a country. A well developed financial system is essential for economic growth. A sound banking system stimulates the growth of an economy. Banking industry is highly competitive. So it is critical for banks to improve the customer base for attaining sustainable banking business development. That will increase the performance of banks and maintain the competitive position in the market. There are certain key processes, practices, strategies and technologies that can help banks to retain competitive edge. Banks are focusing on to become more customer oriented. Banks are trying to differentiate their bank by using various brand building strategies. Building Brand Resonance is the ultimate aim of every brand. It has emerged as processes and strategies that have become vital for the businesses in the banks. The present research tries to identify the competitive edge of the banks for the sustainable banking business development. The study focuses on identify the factors influencing in imperative components of Brand Resonance in banking business development. It comprises of brand salience, brand performance, brand judgement and brand feeling. It also helps to understand the implications of brand relationship in banking business. This study is based on primary data with a sample of 160 respondents. The area of study covers the customers in Thrissur district, Kerala. Analysis of data has done with the help of statistical tools such as factor analysis, correlation, regression and percentage analysis. The paper identified the determinants influencing Brand Resonance in the banking business.