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.The tax professional who comes into contact with such a situation should consider the need to file Form 8594, or to revise the valuation of specific assets. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. The Tax Court held that the taxpayer was required to take the assumption of the liability into income despite no corresponding deduction to the taxpayer. Each party, Seller and Purchaser, shall use the Allocated Amounts on IRS Form 8594. Kevin would file a Form 8594 outlining the allocation of purchase price amongst the assets purchased.