Tax Collector dream of a tax collector represents enforcement of responsibilities or made promises. Following up or pressuring someone to do what they are supposed to do or that they said they would do. You or someone else that is making absolutely sure someone does their part.
Negatively, a tax collector may reflect an overbearing feeling of being pressured or coerced into doing what needs to be done. Unpleasant life situations where you or others have to be scared or controlled into keep their responsibilities or promises. Using fear to make someone do their part.