This study seeks to investigate and clarify the influence of support from colleagues on professional coping mechanisms, work engagement, and job satisfaction among Vietnamese tax officials. Grounded in foundational theories of professional coping, stress, and coping strategies built upon and continuing the understanding from previous research results, this article provides a specific contextual analysis of the professional coping of tax officials in the context of the Vietnamese Government’s strong administrative reform aimed at developing and effectively managing human resources. The survey process and evaluation of results gathered from 251 observations have confirmed and supported our research hypothesis, demonstrating that support from colleagues has a positive impact on the professional coping of tax officials in Vietnam. Furthermore, this professional coping process significantly contributed to work engagement and job satisfaction among tax officials today. Based on the research findings, we have proposed practical recommendations and policy suggestions tailored to the tax sector in Vietnam.