This mobile system, which is PalmOS-based software and can work on all Palm-based devices, is now also developed for Windows Mobile. It is used for on-site invoice notification in municipalities. Last household information, garbage, lighting, sewerage etc. tax information is transferred from the Back Office Municipal Application System to the Mobile device. The municipality employees collecting the last water meter information with this system in the transmitted data, and can calculate cost according to the amount of water consumed. Employees print the notification slip with all the information required to be notified and leave it to the household.When workers come to the center with their devices, the latest information read and calculated from the mobile device; Municipality can be transferred to automation system. For this purpose, ConnectingPDA is used as a parametric PC transfer software.The system can work smoothly with different municipal applications. The necessary work is continuing to drive the Android version of the application to the market.