This paper investigates the impact of contract farming on green leaf tea output among Tanzanian smallholder farmers. Data from 393 growers from Mbeya and Njombe regions were collected in a cross-sectional survey and analysed descriptively using IBM Statistics Version 26. A multiple linear regression model was used to test the null hypothesis. The findings show that contract farming engagement (β=140.102; P=0.058) positively impact production. Moreover, household size (β=2.268; P=0.903) and gender (β=294.978; P=0.000) positively impact green leaf tea production. Besides, age (β=-2.719), education (β=-3171.868), and farm size (β=-20.866) all negatively impact production, but education only was statistically significant at P=0.002. We conclude that, contract farming has a favourable impact on green leaf tea production and suggests recognising its potential for farmers’ growth. Besides, its nuanced importance and borderline P value (0.058) prompts further research on contract design, capacity-building, and market dynamics. Additionally, this paper highlights nuanced effects of farmer attributes. While household size and gender positively influences production, age, education, and larger farms negatively impact it. A comprehensive approach to tea production optimization, considering age-appropriate practices, education-specific interventions, and efficient farm management, is crucial. Further investigation into the combined effects of age, education, and gender is suggested for holistic insights.