An ARB is a group of citizens authorized to resolve disputes between taxpayers and the appraisal district. The ARB hears taxpayer protests. The ARB also hears issues that a taxing unit may challenge about the appraisal district’s actions. In taxpayer protests, it listens to both the taxpayer and the chief appraiser. ARB decisions are binding only for the tax year in question. ARB hearings begin around May 1. The ARB should complete most of the hearings by July 20. In the largest counties, this deadline may be later.