Joint Enterprise Tax Calculator Solution (JETCS)

The Internal Revenue Service, under the Department of the Treasury, is conducting market research through a Sources Sought Notice to identify capable vendors who can provide a cloud-based, FedRAMP-compliant tax calculation software solution as part of the Joint Enterprise Tax Calculator Solution initiative. The solution must support seamless integration with IRS systems via standardized API architectures to handle high-volume, complex, and multi-user manual and automated workflows related to income tax examinations. The software must be a commercial off-the-shelf (COTS) product capable of calculating taxes for a range of forms including 1040, 1041, 1065, 706, 1120, and 1120-S, and must maintain up-to-date compliance with evolving federal tax laws, implementing legislative changes within 30 days of publication. It must be hosted in a secure cloud environment with FedRAMP Moderate authorization, adhere to NIST 800-53, FIPS 140-2/3, FISMA, and IRS IRM 10.8.1/10.8.24 standards, and ensure full compliance with privacy, accessibility, and cybersecurity requirements including Section 508. The solution must support a 10-year rolling tax window, integrate with IRS Modernized e-File systems, and be deployable under the IRS OneSDLC development lifecycle. The procurement is in the pre-solicitation market research phase, with no formal contract award anticipated from this notice, and no reimbursement will be provided for response costs. Responses must be submitted using the official SSN Response Template via email to designated IRS personnel by May 12, 2026, at 3:00 PM Eastern Time, and must not exceed five pages of supporting documentation beyond the template. Only editable files, such as Microsoft Office formats, are accepted; scanned or encrypted submissions will not be considered. All submitted information, including proprietary data, becomes Government property and will be protected as confidential under applicable regulations, though vendors are responsible for properly marking such information. Performance will occur across IRS facilities nationwide, including Washington, DC, and field offices, with contractor personnel required to use only Government-Furnished Equipment and comply with IRS biometric badge requirements and access controls under Treasury Directive TD 71-10. The anticipated contract, if awarded following this research, would include a 12-month base period, four additional 12-month option periods, and a possible six