In 1984, the Swiss Federal Court ruled that the marriage penalty, i.e. taxing married couples higher than unmarried ones, as unconstitutional. 37 years later, the penalty still exists, with over 700,000 couples in Switzerland affected. This has had serious implications for women’s labor market participation. While various alternatives to joint taxation are being discussed, individual taxation would not only eliminate any marriage penalties and bonuses, it would also incentivize female labor market participation most. If accompagnied by further policies such as affordable childcare and parental leave, individual taxation could play a significant role in the women’s struggle for equality.