Form 8594 must also be filed if the purchaser or seller is amending an original or a previously filed supplemental Form. 8594 because of an increase or decrease.Learn how to file form 8594 and when to file. For information on values, to file for an exemption, or to report changes in ownership or address, please call the Appraisal District at 210-224-2432. In an asset sale, Seller and Acquiror each must complete Form 8594, Asset Acquisition Statement. Under Section 1060 (Rev. Feb. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. The City's FY 2017 Adopted Budget does not include a City property tax rate increase.