✓ Complete IRS Form 8594 Asset Acquisition. 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. Detailed descriptions of all purchased and excluded assets. • A listing of assumed and excluded liabilities, contracts and agreements.