Emerging adults find themselves in a time of great transition, especially related to finances and relationships. This study used a sample of 1,950 U.S. emerging adults currently in romantic relationships to investigate the role that parent financial socialization plays in the financial communication for emerging adult couples. This study also investigated if financial self-efficacy, in part, explained this association. Parent financial socialization was found to be positively associated with couple financial communication. In addition, financial self-efficacy was found to partially mediate this relationship. Individuals whose parents taught them effectively regarding finances had higher levels of self-efficacy regarding finances and had higher quality of financial communication in their relationships. Clinicians can use this information to better support couples' struggles with financial communication. Helping couples develop financial skills and knowledge can help them improve their communication as a couple.