To compare the extent to which (a) amount versus adequacy of received support and (b) support provision versus solicitation behaviors predict marital satisfaction, married couples from the United States (N= 275) provided perceptions of received support and participated in 2 support transactions. Actor–partner interdependence modeling and structural equation modeling techniques were employed. Husbands' perceptions of support adequacy predicted marital satisfaction more than their perceptions of support amount, whereas the results were generally the opposite for wives. Husbands' provision and wives' solicitation behaviors predicted marital satisfaction. Results suggest the need to move beyond simple counts of support received to examining support adequacy—and the various behaviors and roles involved in supportive transactions—to enhance theories of support and relationship functioning.