When Sokka, Katara, and Aang met with Haru and his mother inside her shop, the tax collector knocked on the door and entered, in order to demand the due taxes. Haru's mother aggressively asked him what he was doing there as she had already payed him that week. The tax collector arrogantly stated that the taxes had just doubled while simultaneously threatening to burn down her business, generating fire between his hands in order to dissuade her from complaining. She paid him her alleged dues, yet he rejected the copper pieces, uninterested in the tawdry currency of the Earth Kingdom.
After receiving a tip that Haru had earthbent in order to save an elder from a mine accident, the tax collector visited Haru's home late at night and captured the earthbender, planning to send him to the prison rig.