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. Instructions for Form 8594, asset acquisition statement under section 1060-journal. Enter your name and taxpayer identification number (TIN) at the top of the form. Then check the box for Purchaser or Seller. 1. Under Gross Amount, enter the value of articles used or consumed in Washington State on which sales tax has not been paid. Complete the Form 8594 example on this page. Read the instructions carefully.