New regulations from the U.S. Treasury and the Internal Revenue Service allow all legally married same-sex couples to file joint federal tax returns, regardless of where they live.
The Associated Press reports the move comes after the Supreme Court's ruling in June invalidated a section of the 1996 Defense of Marriage Act, which prevented married gay couples from filing jointly.
Reuters spells it out this way: "whether a married gay couple lives in New York, which recognizes gay marriage, or Oklahoma, which does not, federal tax benefits and responsibilities apply."
Minnesota legalized gay marriage in May, the 12th of 13 states and the District of Columbia to do so.
Not all same-sex couples will benefit. USA TODAY points out that some may pay higher income taxes as a result of the "marriage penalty," when combined incomes bump joint filers into a higher tax bracket.