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. Do-It-Yourself (DIY) Form Programs are free and easy guided step-by-step programs to help you fill your court forms.Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. Learn the tax implications for each type of sale. A business bill of sale is a legal document that recognizes the sale and change of ownership of a business and all its assets.