MFA Financial, Inc., together with its subsidiaries, operates as a real estate investment trust (REIT) in the United States. The company invests in residential mortgage assets, including non-agency mortgage-backed securities (MBS), agency MBS, and credit risk transfer securities; residential whole loans, including purchased performing loans, purchased credit deteriorated, and non-performing loans; and mortgage servicing rights related assets. The company has elected to be taxed as a REIT and would not be subject to federal income taxes if it distributes at least 90% of its taxable income to its stockholders. MFA Financial, Inc. was incorporated in 1997 and is headquartered in New York, New York.