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 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. â–¶ Attach to your income tax return. However, the purchase of farm real estate alone does not represent a going concern business, and the Form 8594 is not required. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity.