E-Tax Invoice System Using Web Services Technology: A Case Study of the Revenue Department of Thailand

This research project proposed an "e-Tax Invoice System" using Web Services (WS) technology for the Revenue Department of Thailand (RD). This system uses four WS technologies namely XML, WSDL, UDDI and SOAP, hence the system is able to communicate with several applications on heterogeneous platforms. In addition, the proposed e-Tax Invoice System applies two security technologies: SSL as a secure channel for data exchange and Hash Function for transforming a plain password into an unreadable password. The proposed system is able to collect tax invoice data from taxpayers especially Business. Through the system, Business can send tax invoice data immediately to the RD once the payment occurs. Therefore, the proposed system can provide up-to-date data to generating reports for the RD Official. The report can help improve the RDpsilas work processes especially tax payment auditing. Moreover, the proposed system allows Customer and Business to search tax invoice data online. The research also performed comparative analysis which indicates that the e-Tax Invoice System can solve problems in the current system and enhance the RDpsilas work processes concerning the tax invoice systems.