Family Law in Mexico
Introduction
Mexican family law is largely governed by state civil codes, as family matters fall within state legislative jurisdiction under the federal system. The Federal Civil Code serves as a model for state codes and applies directly in Mexico City. Federal constitutional standards, particularly regarding equality and non-discrimination, impose uniform requirements on state family law. The SCJN has played a transformative role in recognizing same-sex marriage, reproductive rights, and gender equality in family matters.
Marriage
Marriage (matrimonio) is defined as the voluntary union of two persons for the purpose of shared life. Following the SCJN’s 2015 ruling in Acción de Inconstitucionalidad 2/2010 and subsequent decisions, same-sex marriage is recognized nationwide. Marriage requirements include minimum age (18 years), free consent, and the absence of impediments such as existing marriage or close kinship. State civil codes govern marriage formalities, while the Federal Civil Code provides a model framework.
Divorce
Mexico adopted no-fault divorce (divorcio incausado) in 2008, eliminating the requirement to prove grounds for dissolution. Divorce may be obtained unilaterally through judicial proceedings or by mutual consent through administrative proceedings before a civil registry official. The Federal Civil Code regulates divorce procedures, including spousal support (pensión alimenticia), child custody, property division, and parental responsibilities. Divorce decrees address the dissolution of the marital property regime (sociedad conyugal or separación de bienes).
Same-Sex Marriage
The SCJN’s 2015 resolution in Acción de Inconstitucionalidad 2/2010 declared that same-sex marriage bans violate constitutional equality and non-discrimination principles. The Court established that all states must recognize same-sex marriages performed in other jurisdictions. Subsequently, Amparo en Revisión 165/2021 confirmed that the right to marry applies equally to same-sex couples. Most states have now amended their civil codes to permit same-sex marriage.
Child Custody and Adoption
Child custody (custodia y guarda) is determined based on the best interests of the child (interés superior de la niñez), a constitutional principle established by Article 4 of the Constitution. Courts may award joint or sole custody, considering the child’s physical and emotional needs. Adoption procedures are governed by the General Law on the Rights of Children and Adolescents (Ley General de los Derechos de Niñas, Niños y Adolescentes).
Conclusion
Mexican family law has evolved significantly, driven by constitutional jurisprudence recognizing equality, non-discrimination, and individual autonomy. The SCJN has been instrumental in expanding marriage rights, eliminating fault-based divorce, and strengthening children’s rights. Family law remains primarily state-regulated, creating some variation across jurisdictions.