If you sell or dispose of property used in a trade or business, it must be reported on IRS Form 4797, Sales of Business Property. This form is divided into several sections, which are used for different types of property.
Form 4797, Sales of Business Property
The file is in Adobe portable document format (PDF), which requires the use of Adobe Acrobat Reader.
For background information as well as information on related topics, see our discussion of Reporting Sales of Assets