In a search for determinants of societal levels of income inequality, scholars have suggested that homogamy within marriages and cohabiting relationships is a potentially important driver of inequality. If resourceful persons form couples together, and individuals without resources partner each...

This paper addresses the question to what extent the association between partners' earnings matters for inequality between couples. First, we organize the existing literature to explain why studies come to a large variety of conclusions despite using, on occasions, the same data. Second, we use...