QUESTION PRESENTED
               Whether M~ and M2~, a same-sex couple, were married for purposes of determining entitlement
                  to widow’s benefits under the Social Security Act (“the Act”) and, if so, whether
                  the marriage satisfies the nine-month duration of marriage requirement set out in
                  the Act.
               
               BRIEF ANSWER
               Yes. M~ and M2~ were married for purposes of determining entitlement to widow’s benefits
                  under the Act and their marriage satisfies the nine-month duration of marriage requirement
                  set out in the Act.
               
                
               SUMMARY OF FACTS
               M~ and M2~ entered a registered domestic partnership in the State of Washington on
                  July XX, 2012. Subsequently, M~ and M2~ married on February XX, 2013, as evidenced
                  by a Washington Certificate of Marriage, State File Number 2012120XXXXXXX. M2~ died
                  on September XX, 2013. M2~ was domiciled in the State of Washington at the time of
                  her death. M~ has applied for widow’s benefits on M2~’s record.
               
               ANALYSIS
               A. Federal Law and Programmatic Guidance
               The Agency will determine whether a claimant is the insured’s widow or widower by
                  looking to the laws of the state where the insured was domiciled when he or she died.
                  42 U.S.C. § 416(h)(1)(A)(i); 20 C.F.R. § 404.345. In this case, at the time of death,
                  M2~, the insured, was domiciled in Washington State. Therefore, we look to the law
                  of Washington State to determine whether M~ can be considered M2~’s spouse for purposes
                  of determining entitlement to widow’s benefits under the Act.
               
               In addition, in order to be entitled to widow’s benefits, a person must, among other
                  things, be either a legal, putative, or deemed spouse for not less than 9 months,
                  unless an exception applies. 42 U.S.C. § 416(c); 20 C.F.R. § 404.335; POMS RS 00207.001A.1.a.1-2. As a result, we must determine whether the marriage in this case satisfied the
                  duration of marriage requirement.
               
                
               B. Washington State Law 
               The State of Washington authorized domestic partnerships beginning July 22, 2007.
                  2007 Wash. Legis. Serv. Ch. 156 (S.B. 5336). The law made domestic partners eligible
                  for a number of the benefits of marriage, including the right to inherit property
                  from a partner dying intestate. Id. at Sec. 27. It amended the existing law to provide, in pertinent part, that a share
                  of the net estate of a person dying intestate would be distributed to the “surviving
                  spouse or state registered domestic partner.” Id. (emphasis in original). Accordingly, Program Operations Manual System (POMS) GN 00210.004.D reflects that Washington established the non-marital legal relationship of registered
                  domestic partnership, with qualifying inheritance rights, effective July 22, 2007.
               
                
               In 2012, the Washington State legislature passed a law legalizing same-sex marriages.
                  2012 Wash. Legis. Serv. Ch. 3 (E.S.S.B. 6239). Under the new law, same-sex partners
                  in a state registered domestic partnership could be licensed and enter a marriage,
                  so long as they were otherwise eligible to marry. RCW § 26.60.100(1). The statute
                  further specifies that “[f]or purposes of determining the legal rights and responsibilities
                  involving individuals who had previously had a state registered domestic partnership
                  and have been issued a marriage license or are deemed married under the provisions
                  of this section, the date of the original state registered domestic partnership is the legal date of
                     the marriage. Nothing in this subsection prohibits a different date from being included on the
                  marriage license.” RCW § 26.60.100(4) (emphasis added).
               
               C. Analysis
               M~ and M2~ were legally married in the State of Washington, where M2~ was domiciled
                  at the time of her death. Their marriage license is dated February XX, 2013. However,
                  under Washington State law, the legal date of their marriage is the date of the original
                  state registered domestic partnership. RCW § 26.60.100(4). Accordingly, although M~
                  and M2~’s marriage certificate reflects a date of February XX, 2013, the legal date
                  of M~ and M2~’s marriage is July XX, 2012, the date of their registered domestic partnership.
                  Because that date, July XX, 2012, is the date of marriage pursuant to Washington State
                  law, M~ and M2~ were legally married for over one year at the time of M2~’s death
                  on September 22, 2013. As a result, M~ and M2~’s marriage satisfies the spousal and
                  durational requirements for eligibility for widow’s benefits.
               
               CONCLUSION
               It is our opinion that M~ and M2~, a same-sex couple, were married for purposes of
                  determining entitlement widow’s benefits under the Act and their marriage satisfies
                  the nine-month duration of marriage requirement set out in the Act.