Islamic Interpretation of Dreams (Ibn-i Sirin):

Collecting taxes in a dream means compelling someone or forcing him to pay due alms, or it could mean coercing someone to live with him.

Ifone sees himself as a tax collector in a dream, it means that he will earn respect, or that he will be forced to ask everyone for permission regarding everything he does.

A tax collector in a dream also means paying ones debts, or he could represent a policeman, an emissary, a treasurer, or a safe.