Learn what it takes to do a 1031 exchange in California and how you can cleverly leverage it to defer capital gains tax and build wealth. A 1031 exchange is a tax-deferred exchange that allows you to defer capital gains taxes as long as you are purchasing another "like-kind" property.How do I fill this out? To fill out this form, gather all necessary information regarding the properties involved in the exchange. Start your 1031 Reverse Exchange here. Please provide us with as much information as possible. Here is an example of a sale of real property under a Land Contract with a 1031 Exchange. The form requires a description of the relinquished and replacement property, acquisition and transfer dates, and other information. The capital gains tax on the sale of the original property is deferred, provided certain IRS rules and timelines are followed.