The main purpose of the study is to evaluate the direct influence of financial literacy application and money management behaviour on financial wellbeing as well as whether money management behaviour mediates the influence of financial literacy application on financial wellbeing among young adults. A questionnaire survey method was utilized to gather information from young working adults. The partial least squares structural equation modelling (PLS-SEM) was the data analytic technique employed to analyze the data. The result revealed that financial literacy application and money management behaviour have positive and significant direct influence on the financial wellbeing of young adults. Also, the study found out that money management behaviour partially mediates the influence of financial literacy application on financial wellbeing. The study bridges the gap between theory and practice to offer an enriched empirical basis for young adults to continuously apply financial knowledge and possess sound money management attitude to attain financial wellbeing. By proposing a framework, this study contributes to existing knowledge and highlights the importance of developing good money management behaviour to support financial literacy application role in dealing with financial wellbeing problems. Thus, the study will be useful for young adults, parents, and policymakers in designing financial wellbeing programmes for better quality of financial life and value creation among the young working adults. © Ayodele F.O., 2025.