When is the submission deadline?

Submissions are due July 17, 2026. Questions must be submitted by July 17, 2026.

It was issued by Internal Revenue Service. The work is located in Kearneysville, West Virginia, United States.

Who is a good fit for this opportunity?

Experienced in developing IRS-compliant or government tax software. Proven track record with secure data integration solutions (e.g., XML ingestion). Capable of providing comprehensive support, training, and long-term maintenance. Ability to offer customized software and flexible pricing/contract models. Familiarity with international tax modeling and operational integration.

RFI for International Tax Modelling Tool (Due July 17, 2026)

Overview

Software, Web & Mobile Development

Kearneysville, West Virginia, United StatesPosted: May 27th, 2026Deadline: July 17th, 2026

Fit Score

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SUMMARY

Seeking proposals for a secure international tax modeling tool tailored for IRS use, including software delivery, training, maintenance, and integration services.

KEY REQUIREMENTS

Must be able to model and analyze international tax provisions under TCJA 2017, OB3 2025, and prior law
Must support integration of tax return data including XML ingestion
Must ensure strict compliance with taxpayer confidentiality requirements under IRC Section 6103
Must provide user training, ongoing maintenance, and operational integration services
Must submit response via the Vendor Response Template attachment
Must attach a 1-page capabilities statement in PDF format
Must attach a 2-page software specification brochure in PDF format if applicable
Must submit response via email with a maximum file size of 10 Megabytes

TIMELINE

Release Date: May 26th, 2026

Response Date: July 17th, 2026

QUESTION DEADLINE

July 17th, 2026

Issuing Agency

Internal Revenue Service

Organization overview and procurement intelligence available on paid plans.

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DESCRIPTION

The agency seeks a secure, IRS-compatible software solution for modeling and analyzing complex international tax provisions under the One Big Beautiful Bill. The proposed tool should enable IRS personnel to evaluate the impact of various tax provisions and taxpayer planning strategies, support the integration of tax return data (such as XML ingestion), and deliver associated services including user training, ongoing maintenance, and operational integration.

The scope encompasses not only the development and delivery of the modeling tool, but also comprehensive support services, with a focus on customization for exclusive IRS use. Vendors are requested to describe their available options for ongoing support, including service models, service level agreements (SLAs), and strategies for long-term maintenance.

Additionally, respondents should recommend appropriate pricing and contract structures (such as Firm-Fixed-Price, Labor-Hour, or Time-and-Materials), provide rationale for their proposed approach, present estimated total and recurring costs, and suggest timeline estimates for development and customization. The contract period is expected to be one year.

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Frequently asked questions

When is the submission deadline?: Submissions are due July 17, 2026. Questions must be submitted by July 17, 2026.
Who issued this RFP?: It was issued by Internal Revenue Service. The work is located in Kearneysville, West Virginia, United States.
Who is a good fit for this opportunity?: Experienced in developing IRS-compliant or government tax software
Proven track record with secure data integration solutions (e.g., XML ingestion)
Capable of providing comprehensive support, training, and long-term maintenance
Ability to offer customized software and flexible pricing/contract models
Familiarity with international tax modeling and operational integration

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