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. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. â–¶ Attach to your income tax return. You may file for the Property Tax Refund on paper or electronically. The due date is August 15. You list the assets, plus the value and sale price of each, on Form 8594: Asset Acquisition Statement under Section 1060.