Paying research participants in developing countries like Uganda raises ethical concerns over potential for undue inducement. This article, based on an exploratory study, reviewed 49 research protocols from a national HIV/AIDS research ethics committee database. Payments mainly adhered to the reimbursement and compensation payment models. Offers made were diverse but basic in order to limit undue inducement. Implications in terms of undue inducement and possible impact on participants and research are discussed. We end by recommending standardization across comparable studies in (...) the interests of promoting high-quality research, altruism, voluntariness, and restraining unfair reimbursement practices in research. (shrink)