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.Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. You can pay your business tangible property taxes on your furniture, equipment, computers, machinery, tools, and business vehicles on the online payment portal. Learn how to file form 8594 and when to file. In Part IGeneral Information, enter the name, address, and TIN of the other party to the transaction (purchaser or seller). I am pleased to forward for your review and consideration the Fairfax County Advertised.