Click on the Budgetary Accounting Icon. Transaction date of Harris County Tax Office online payment portal; transaction date of telephone payment.Q. Where can I pay my property taxes? Step 1: Completing the Protest Form. Which forms will I need to file? For Harris County Appraisal District, most businesses will need to file the general rendition form, 22.15. The department is responsible for maintaining the filed records for each Probate Court case. The clerk also attends each court docket in support of the court. Learn more about their investments and net worth.