You will need to allocate the amount reflected on form 8594 among all the assets. A typical method is to allocate the proceeds based on the original cost.The gain or loss on each asset is figured separately. The sale of capital assets results in capital gain or loss. Explore tax strategies for selling your business. Bessemer Trust's expert guidance covers asset vs. Form 4797 is used to report gains made from the sale or exchange of business property, including but not limited to property used to generate rental income. Find legal resources, and get help with understanding court forms and procedures. Announcements. View the latest news and announcements. When we're talking about the gain or loss of the sale of an asset we need to be looking at net book value at the time of the sale.