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.1. Gather necessary documentation for the asset sale. The purpose of Form 8594 is to determine the treatment of the assets for tax purposes, establish the basis of the acquired assets for the purchaser.