Payment Donation Operational Education (SOP) is one of the dutty for all
parent to pay every mounth. Sometimes parents forgot about the transaction, that
is already paid or not paid SOP. This because there is no system of reminder for
parents, so it takes a system that can give notification to the parents. So the
purpose of this research is to make a program of payment information system
SOP based SMS Gateway to provide information which help administrator about
giving information to parents. Data collection methods used were observation,
documentation and interview. The system build used the method of extreme
programming (XP). The technique of system testing is done by unit test and user
acceptance test (UAT) method which aims to ensure that the system is running
well and to find the problems still in the system. The result of this research is SOP
payment information system system based on SMS Gateway which is intended for
the parents of students.