This review provides a conceptual framework outlining four main determinants of financial well-being and their indicators. The framework suggests how banks and payment providers can help reduce harmful gambling. By tracking financial transactions, these institutions can spot early signs of problem gambling and offer timely help, such as spending limits or alerts. This approach goes beyond just focusing on gambling companies and people who gamble, creating a more comprehensive and effective way to protect people from gambling-related financial harms. This review also encourages collaboration between financial institutions, policymakers, regulators, and researchers to develop better regulations and intervention strategies.