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 if goodwill or going concern value. About 4 years ago I completed this form for a client who sold a business.I used the numbers per the purchase agreement. Both buyer and seller fill out Form 8594 on their respective tax returns showing the allocation. Taxable Stock Sales. The sum of the amounts allocated to Classes IV and V are reported in the aggregate on Form 8594. See Appendix A; see also T.D. 8711 (Jan.