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.Enter your name and taxpayer identification number (TIN) at the top of the form. Then check the box for Purchaser or Seller. 1. Gather necessary documentation for the asset sale. Downloadable forms for eFiling, Divorces, and Suites Affecting the Parent-Child Relationship, Child Support, Hail Claims, Legal, LegalEase, and Passports. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. Submit Electronically. The following material was published in the January 7, 2005 December 30, 2005 issues. Texas State Board of Public Accountancy Chapter 501.