Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. In NYC you may sue for up to.The return should include the tax due from business operations to the last day of business, as well as any tax collected on assets that you sell. This free program will help you create the affidavit that you will need to file in Surrogate's Court. 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. You must follow this procedure: On your return: Sale of Business form.