Use Form 8883 to report information about transactions involving the deemed sale of corporate assets under section 338. 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. 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. With more than 2,800 federal and state forms and schedules, including state resident, part-year resident, nonresident, and automated. Partnership Tax Forms and Instructions.