Fintech has emerged as a transformative force within the Indian economy, operating at the intersection of finance, technology, and sustainability. This study aims to analyze its impact on green growth from 2000-2024. Using an ARDL-ECM methodology, we investigate short- and long-run relationships. The bound test confirms a stable long-run cointegration. The significant and negative ECM coefficient validates this relationship and indicates a moderate speed of adjustment to equilibrium. Findings reveal that fintech, renewable energy, and natural resources are statistically significant drivers of green growth in the long run, and vice-versa. Consequently, policy implications recommend establishing robust institutional frameworks to enhance capacity through training and technical investment. Financial managers must promote fintech growth aligned with green finance to stimulate firm participation in environmental projects, enabling sustainable economic growth.