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GSA Financial Management / GSA-OCFO Vendor Payment Portal / Taxes
Contact Us
Customer Service Office Hours
Monday through Friday
8:00AM - 4:00PM Central Time (Closed Holidays).
Responses are normally the next business day.
Kansas City, Missouri:
Fort Worth, Texas:

Vendor Tax Information

GSA is a federal agency and is responsible for contracting supplies and services for other federal agencies and commissions. The tax-related information below is provided as a starting point. Additional information is available by contacting our customer service for assistance.

1099 Reporting

GSA, as a federal agency, is required to report total payments over $600 in a calendar year to any non government vendor providing services to the federal government. This includes payments to corporations for services provided. For more information see the IRS instructions for form 1099-MISC at:

For any questions on form 1099-MISC issued by GSA, contact the Kansas City Financial Service Center:

Kansas City, Missouri 800-676-3690


Federal law requires federal agencies to have a valid TIN from its vendors in order to process disbursements.

GSA is required to mail B-notices to vendors when the name and/or Taxpayer Identification Number (TIN) do not agree with Internal Revenue Service (IRS) records. This includes Social Security Numbers (SSNs) for sole proprietors, as well as Employer Identification Numbers (EINs) for companies.

If a B-notice is received, corrective actions and instructions will be provided.

Sales and Use Tax Exemption

GSA is a federal agency and is often exempt from state sales, use, and property taxes. For specific state by state information concerning GSA's tax exemption see the link below:

For any questions or to receive a copy of the GSA’s Tax Exemption form, contact the Kansas City Financial Service Center:

          Kansas City, Missouri 800-676-3690

GSA's Form W-9

GSA's EIN number is 44-0553234. Please contact our customer service for a copy of GSA's Form W-9 (Request for Taxpayer Identification Number and Certification).