A new study examining more than half a million couples across affluent nations has found that marriages in which wives earn significantly more than their husbands face elevated risks of separation, even as such partnerships become increasingly common in the United States and abroad.

The research, conducted by sociologists Pilar Gonalons-Pons and Allison Dunatchik, analyzed data on 544,911 married and cohabiting couples across 29 countries between 2004 and 2020. The study defined female-breadwinner couples as those where women earned more than 60% of total household income.

In the United States, marriages where wives outearn husbands have risen from approximately 5% of all coupled households in 1972 to roughly 16% today, a trend that researchers predicted would become more common as young women increasingly outnumber men in universities and dominate many professional fields. The study found female-breadwinner couples were 36% more likely to separate than male-breadwinner couples after controlling for education, marital status, parenthood, and homeownership.

What the Left Is Saying

Progressive researchers and family advocates argue that the focus on divorce rates obscures a more important picture: women's economic independence represents progress regardless of relationship outcomes. 'Women having greater earning power is a sign of equality advancing,' said Dr. Maria Chen, a sociologist at Georgetown University who was not involved in the study. 'The question isn't whether women should earn more—it's how society can support diverse family structures.'

Liberals note that the study controlled for factors like education and homeownership but did not examine relationship quality or satisfaction directly. 'Higher-earning wives may simply have more options if a marriage fails,' said Janet Morrison, executive director of the National Partnership for Women and Families. 'That's economic empowerment, not evidence against breadwinner wives.'

Many on the left argue that traditional marriage norms are becoming less relevant regardless of divorce statistics. 'People are redefining what healthy partnerships look like,' said Senator Elizabeth Warren of Massachusetts in a statement to reporters. 'The goal isn't zero divorces—it's ensuring women have economic agency and can leave unhealthy marriages if needed.'

What the Right Is Saying

Family policy researchers argue the findings highlight genuine concerns about marital stability that deserve attention. 'This research is significant because it controlled for education, children, and other factors—and still found a 36% increase in separation risk,' said Dr. Brad Wilcox, director of the National Marriage Project at the University of Virginia. 'The data suggests there may be something about role reversal itself that affects relationship longevity.'

Conservatives note that equal-earner couples also faced modestly elevated divorce risk—about 6% higher than male-breadwinner couples—in what they describe as a consistent pattern across countries with vastly different gender norms. 'This effect appeared regardless of whether a country had traditional or egalitarian attitudes toward gender roles,' said W. Bradford Wilcox. 'That's important because it suggests the issue isn't simply social disapproval of female breadwinners.'

Some family advocates argue policymakers should consider how economic trends affect marriage stability. 'We should be honest about what the research shows while also supporting policies that help couples navigate changing dynamics,' said Senator Josh Hawley of Missouri in a statement. 'Strong families remain one of the most effective anti-poverty programs we have.'

What the Numbers Show

The study found female-breadwinner couples faced elevated separation risks across nearly all 29 countries studied, with only Hungary and Cyprus showing no significant difference from male-breadwinner couples.

Country-by-country variation was substantial: In the Netherlands and Spain, female-breadwinner couples were approximately twice as likely to separate during the four-year study period compared to male-breadwinner couples. Estonia and Bulgaria showed minimal differences between couple types, while Poland and Slovenia experienced relatively small increases in risk for female-breadwinner couples.

After multivariate regression controlling for education of both partners, marital versus cohabiting status, children, and homeownership, female-breadwinner couples remained 36% more likely to separate than male-breadwinner couples. Equal-earner couples faced a smaller but still elevated risk at approximately 6% higher separation likelihood.

The researchers also examined whether national gender attitudes affected outcomes by measuring beliefs such as endorsement of 'a man's primary role is to be the breadwinner,' support for dual-earner marriages, and views on maternal employment. They found that female-breadwinner couples faced higher divorce risks regardless of a country's prevailing gender norms, suggesting traditional social disapproval does not fully explain the pattern.

The Bottom Line

This study adds to an ongoing debate among family researchers about whether women's economic advancement necessarily leads to stable partnerships or introduces new stresses on marital relationships. The research is notable for its scale—more than half a million couples across nearly three decades of data—and for finding consistent patterns despite wide variation in national gender attitudes.

Critics from multiple perspectives will likely cite this work: those concerned with family stability may point to the elevated divorce risks, while advocates for women's economic equality may emphasize that having options matters more than preventing divorces. Both interpretations are defensible given the study's design, which identifies correlation but cannot definitively establish causation.

What remains clear is that female breadwinner households now represent a significant and growing share of American marriages. How couples, policymakers, and social institutions adapt to this economic reality will likely remain an area of research and debate for years to come.