The current U.S. tax code is an outdated system that does not benefit or reflect the needs of our modern society’s social structures or increasingly diverse demographics. Among those it costs the most: single women, married Black couples and gay couples.

Research finds women who are single and without children are America’s happiest and healthiest group. But thanks to our antiquated and heteronormative tax code, they’re also financially penalized. It’s time for our tax code to reflect our reality.