Sales Tax Tables and Sales Tax Deduction Calculator

The Internal Revenue Service is seeking a contractor to provide Sales Tax Tables and Sales Tax Deduction Calculator services for Tax Year 2025 through Request for Quote 5000217949. The procurement requires comprehensive state and local sales tax data including sales tax rates, spending category taxability information, and local general sales tax rates for each unique ZIP Code/County/City combination across the United States. Contractors must deliver Excel spreadsheets containing state sales tax rates, state and local taxability data for spending categories, and CSV files with local sales tax rates, while handling tax rate changes during the year and providing blended rates with documented taxability variations. The evaluation will be conducted using a best value approach with technical approach being significantly more important than price, and contractors must be registered in the System for Award Management (SAM) with NAICS code 513210 and meet the industry size standard of $47 million. The solicitation has been amended twice, with the final quote submission deadline extended to September 16, 2025, at 10:00 AM Eastern Daylight Time, following an original question deadline of September 10, 2025.

This solicitation does not utilize any set-aside designations and no incumbent contractors are identified in the documentation. While specific award values or budget ranges are not disclosed in the available materials, the contract structure is established as a Firm Fixed Price arrangement. The base performance period runs from September 22, 2025, through January 31, 2026, providing approximately four months for completion of deliverables. The work will be performed to support the IRS Research, Applied Analytics, & Statistics division, with the place of performance listed as Washington, DC. The government has provided sample spending categories through Attachment I and emphasized that vendors must independently source the required local taxability data from unique sources not currently available in standard databases.