Form 8594 is a tax document required in certain business sales where the buyer acquires assets rather than stock or equity. Generally, both the purchaser and seller must file Form 8594 and attach it to their income tax returns (Forms 1040, 1041, 1065, 1120, 1120-S, etc.)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. Form 8594 is the Asset Acquisition Statement, which the buyer and seller must complete and submit to the IRS. CAUTION. The federal amounts that you use on your Arizona return may not be the same as the federal amounts from your federal tax return. – The Form 8594 must be attached to each filer's timely filed Federal income tax return. Did you buy or sell a business during the tax year? If so, you may need to file IRS Form 8594 with your federal tax return.