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 if goodwill or going concern value. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity.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. Both entities must submit IRS Form 8594 with matching allocations. Such alignment reduces audit risk. When and Where to File. The seller and purchaser must file Form 8594 as an attachment to their respective income tax return for the year in. Further, the parties should agree to file a supplemental Form 8594 to reflect any such increase or decrease.