Portal for filling out and submitting Business Personal Property Listings and Extensions. Taxscribe tutorial .If you sold business-use property during the year, you had a gain or a loss on the sale. Complete and file Form 4797: Sale of Business Property. The gain or loss on each asset is figured separately. The sale of capital assets results in capital gain or loss. 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. 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. Form 4797 Sales of Business Property reports the sale of business property.