This paper introduced the process of exploitation of software of individual taxchecking(SITC),along with the deepening of electronic administration of tax, thissoftware system is presented without saying.

• 本文介绍了开发个体税收定额软件(software of individual tax checking简称SITC)的过程,随着税收征管电算化的不断深化,该系统应运而生。