Purpose <p>This study aims at examining the determinants that affects Adoption intention of mobile payment services amongst Millennials by extending UTAUT through the inclusion of government initiatives as a contextual moderating factor. This study examines consumers experiences through the lens of expectation-confirmation factors which helps to explain the adoption intention as a post-evaluation behaviour.</p> Design/methodology <p>The data analysis in this study was conducted with 450 responses collected through an offline questionnaire from Jaipur, Rajasthan India. The PLS structural modelling using Smart PLS 4.0 is utilized for evaluating both structural model and measurement model.</p> Findings <p>The results of this study validate the proposed model. It indicates that price value, social influence, effort expectancy, government initiatives and personal innovativeness significantly influence adoption intention, with price value emerged as the strongest predictor (β = 0.347). The results also confirm the moderating effect of government initiatives in strengthening the impact of habit and price value on adoption intention, and weaking the impact of hedonic motivation and personal innovativeness. The inclusion of moderating variable improves model’s explanatory power from R² = 0.506 to R² = 0.588, suggesting a substantive enhancement.</p> Research limitations/implications <p>While limited by cross-sectional survey, this study extends UTAUT by embedding moderating role of government initiatives and conceptually linked mobile payment adoption intention with SDG aligned triple bottom line outcomes. The findings will help service providers in gaining a comprehensive insight into millennial users’ adoption intention patterns and facilitate strategies aligned with SDGs.</p> Originality/value <p>This study offers contextual extension of the UTAUT model by incorporating government initiatives as a moderating factor to provide empirical evidence from an emerging market setting.</p>