This paper analyzes the impact of intermarriage on the economic integration of immigrants in Sweden, measured by annual earnings. We use longitudinal register data for the period 1990–2009 for the total population of immigrant men born 1960–1974. The results reveal large intermarriage premiums, but overall this seems to be a result of selection effects as most of the premium is visible already at the time of marriage. For the most economically marginalized immigrants, however, an intermarriage premium arises within marriage implying that forming a union with a native triggers a more rapid earnings growth among them.