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. Learn how to file form 8594 and when to file. IRS Form 8594 only requires a breakdown of asset value into seven categories, designated as "Classes I through VII. Go to Screen 65, Asset Acquisition Statement (8594) (Screen 58 for S-Corp). Enter a 1 or 2 in the field 1=buyer, 2=seller (MANDATORY). Line 1: Enter the name, address, and Tax Identification Number (TIN) of the other party (either the purchaser or seller).