International Tax Modeling Tool

The Internal Revenue Service (IRS) is seeking information from industry on the capability to deliver a software solution that enables IRS personnel to model and analyze the application of international tax provisions under the Tax Cuts & Jobs Act of 2017, the One Big Beautiful Bill Act of 2025, and pre-existing tax law. The scope includes not only development and delivery of the tool, but also comprehensive support services such as user training, ongoing maintenance, and eventual integration of the solution into IRS operations. The key features of the required solution include: • The ability to model and analyze complex international tax provisions • The ability to evaluate tax impacts and taxpayer planning strategies • The ability to support integration of tax return data • The ability to ensure strict compliance with taxpayer confidentiality requirements • The ability to provide user training, ongoing maintenance, and operational integration • The ability to adapt to new or evolving tax regulations • The ability to accommodate varying taxpayer profiles • The ability to provide a secure, IRS-compatible software solution.