This study examines the effect of Business Communication Skills on Business Performance Among SMEs in Tanzania: A Case of Songea Municipality. Thus, dependent variable is business performance while independent variable is Business Communication Skills. The study used a cross-sectional survey research design and mixed research approach. From population of 4,200 SMEs, sample size of 108 respondents (SMEs Owners) were used. Questionnaires and Interviews were used as methods of data collection. The study employed descriptive statistical analysis and regression analysis for quantitative data and content analysis for qualitative data. Findings of regression show that business communication skills are statistically significant at the 1% level, with a positive coefficient of (β = 0.748). This suggests that a one-unit improvement in business communication skills corresponds to a 7.48% increase in business performance, assuming other factors remain constant (see Table 6). Overall, the findings conclude that enhanced business communication skills contribute positively to the performance of SMEs. This study suggested that, SME owners needed to invest in structured communication skills development programs. This included targeted training in verbal, written, and digital communication, along with workshops on interpersonal skills and active listening. SMEs should also establish clear internal communication channels and protocols to guarantee the well-organized flow of information across all levels of the business.