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. The tax professional who comes into contact with such a situation should consider the need to file Form 8594, or to revise the valuation of specific assets. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. In an asset sale, Seller and Acquiror each must complete Form 8594, Asset Acquisition Statement. Under Section 1060 (Rev. Feb. Both the seller and purchaser of a group of assets that constitutes a trade or business must file Form 8594 to report asset purchase and sale.