Teacher self-efficacy has been abundantly studied. However, it seems that the consequences of teachers' self-efficacy have not been appropriately explored yet. The research objective was to investigate the consequences of teachers' teaching self-efficacy. The researchers used a qualitative research method. They collected the data through semi-structured interviews with 20 EFL teachers who were selected through purposive sampling. The interviews were content analyzed thematically. Findings showed that self-efficacy has different consequences: pedagogical, learner-related, and psychological. Each consequence has several sub-categories. It is concluded that high self-efficacy affects teachers' teaching practices, learners' motivation, and achievement. It also affects teachers' burn-out status, psychological being, as well as their job satisfaction. The findings can be theoretically and pedagogically important to EFL teachers, teacher-trainers, and administrators of educational settings.