Relating to the calculation of certain ad valorem tax rates of a taxing unit for a year in which a property owner provides notice that the owner intends to appeal an order of an appraisal review board determining a protest by the owner regarding the appraisal of the owner's property.

HB 3094 changes how Texas local governments calculate property tax rates for years when a property owner notifies them they plan to appeal an appraisal. The bill requires that tax calculation forms must be electronic, certified, and integrated into property tax databases, with specific features like electronic filling and value matching. It defines key terms: "contested taxable value" (the disputed appraisal amount) and "uncontested taxable value" (the undisputed amount) to clarify rate calculations during appeals. This directly affects property owners appealing appraisals and local taxing units (like counties or school districts) responsible for setting property tax rates.