OASIS TAX XML TASC Priorities May 23, 2003

Observations Need to get the third parties to present at the next face to face meeting Authentication is important but is outside of scope We know an overall schema won’t work Need a layer of common infrastructure that tax applications need to take advantage of

Goal The goal of TASC is to Identify and share: The high-level business process models for the different domains (direct, indirect, peripheral activities and G2G) Best practices and lessons learned Work already underway - pilots between different jurisdictions and vendors Common standards, recommendations, specifications and guidelines Influences that impact the interfaces between tax authorities and third-party applications Development tools and their direction Underlying architectural components

TASC Activities Activity Date Lead Validate assumptions about domains Today The high-level business process models for the different domains (direct, indirect, peripheral activities and G2G) September 2003 Andy Influences that impact the interfaces between jurisdictions and software suppliers TBD Best practices and lessons learned January 2004 Work already underway - Pilots between different jurisdictions and vendors Common standards, recommendations, specifications and guidelines May 2004 Development tools and their direction Underlying architectural components