This document is a federal residency declaration form under Internal Revenue Code section 1445. It requires sellers of real estate to declare their citizenship and residency status in the United States. The form has sections for sellers to indicate if they are U.S. citizens, resident aliens with documentation of their status, or nonresident aliens subject to federal tax withholding. Buyers must also acknowledge reading and receiving a copy of the sellers' declarations. The purpose is to determine the tax obligations and withholding requirements for the real estate transaction based on the sellers' residency statuses.