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.Both the seller and purchaser of a group of assets that makes up a trade or business must use Form 8594 to report such a sale. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. The sale of the assets of a business may be subject to certain allocation and reporting requirements for federal income tax purposes. Go to Screen 65, Asset Acquisition Statement (8594) (Screen 58 for S-Corp). A foreign entity registering under a fictitious name must file assumed name certificates with the secretary of state (Form 503 (Word 125kb, PDF 74kb)).