Abstract Monetary incentives are often used to increase the motivation and output of health service providers. However, the focus has generally been on frontline health service providers. Using a cluster randomized trial, we evaluate the effect of monetary incentives provided to community‐based volunteers on early initiation of antenatal care (ANC) visits and deliveries in health facilities in communities in Zambia. Monetary incentives were assigned to community‐based volunteers in treatment sites, and payments were made for every woman referred or accompanied in the first trimester of pregnancy during January–June 2020. We find a significant increase of about 32 percent in the number of women completing ANC visits in the first trimester but no effect on service coverage rates. The number of women accompanied by community‐based volunteers for ANC in the first trimester increased by 33 percent. The number of deliveries in health facilities also increased by 22 percent. These findings suggest that the use of health facilities during the first trimester of pregnancy can be improved by providing community‐based volunteers with monetary incentives and that such incentives can also increase deliveries in health facilities, which are key to improving the survival of women and newborns.