The main purpose of this legislation, known as the Refund Equality Act of 2025, is to allow legally married same-sex couples to change their tax filing status even after the usual deadline for doing so has passed. This is particularly aimed at couples who were married but could not file jointly for tax returns prior to a significant ruling in 2013 that recognized their marriage for tax purposes. Key provisions of the Act include the ability for individuals who were first recognized as married under the law to amend their tax returns for years before September 16, 2013.