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 an Internal Revenue Service (IRS) form that provides a structured way to allocate the purchase price of a business among different asset classes. The buyer must also file Form 8594 for the transaction. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. Annually, the facility must complete the certification form and submit it to the Department with their cost report. The seller and the purchaser each must file asset acquisition statements on Form 8594,.