Existing services at zakat institutions need to improve the quality of service to muzakki. Where this can affect muzakki's loyalty. Muzakki who are satisfied with the service tend to be more loyal and give their zakat loyally and give zakat regularly. This research was conducted at the Amil Zakat Infaq Shadaqah Muhammadiyah Institute (LAZISMU). The type of research is field research using quali…