Willingness to vaccinate and test are critical in the COVID-19 pandemic. We study the effects of two measures to increase the support of vaccination and testing: choice architecture and monetary compensations. Some organizations, such as restaurants, supermarkets, fire departments or hospitals in some countries, use these measures. Yet there is the concern that compensations could erode intrinsic motivation and decrease vaccination intentions. We show that both approaches, compensations and choice architecture, can significantly increase COVID-19 test and vaccine demand. For vaccines, compensations need to be large enough because low compensations can backfire. We estimate heterogeneous treatment effects to document which groups are more likely to respond to these measures. The results show that choice architecture and avoidance of small compensations is especially important for individuals who are more skeptical of the vaccine, measured by their trust in the vaccine and their political views. Hence, both measures could be used in a targeted manner to achieve stronger results.