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.A group of assets that makes up a trade or business is exchanged for like-kind property in a transaction to which section 1031 applies. 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. Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. Asset Allocation is how the company value is divided up to report the sale to the federal government, and where applicable state government, for tax purposes. The buyer must also file Form 8594 for the transaction.