International Tax Modeling Tool

The Department of the Treasury's Internal Revenue Service (IRS), specifically the Cross Border Activities Practice Area within the Large Business & International Division, is seeking industry input on the ability to provide a software solution designed for modeling and analyzing the application of international tax provisions. This tool must encompass the tax regulations under the Tax Cuts & Jobs Act of 2017, the One Big Beautiful Bill Act of 2025, as well as prior tax laws. The contract scope involves not only the development and delivery of this comprehensive analytical tool but also includes user training, ongoing maintenance, and plans for eventual integration into standard IRS operations. This opportunity is a sources-sought solicitation with no set-aside requirements, posted on May 26, 2026, and responses are due by July 17, 2026. The work will be performed primarily in Washington, DC, under NAICS code 519290, which pertains to other information services. The IRS office managing this effort is located in Kearneysville, WV, with primary and secondary points of contact available to address inquiries. This initiative reflects the IRS's commitment to enhancing its capabilities in complex international tax administration through advanced software solutions and continued operational support.