Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. 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. Both the seller and purchaser of a group of assets that makes up a trade or business must use Form 8594 to report such a sale. Line 1: Fill in the name, address and TIN of the other party of the transaction (either the purchaser or seller). Enter your name and taxpayer identification number (TIN) at the top of the form. Then check the box for Purchaser or Seller. You are required to report the total cost all of your business property unless it is not assessable for property tax purposes. Unravel the complexities of Form 5471 instructions with our comprehensive guide. The purpose of this section is to prescribe an approach to allocate a lump sum purchase or sales price among various assets purchased or sold.