Short answer: GSA’s main phone number is the National Customer Service Center: 1-800-488-3111 (Sunday 9 p.m. to Friday 9:30 p.m. Eastern), or email ncsccustomer.service@gsa.gov. Vendors and contractors usually get faster answers from the office that runs the system they’re using: the Vendor Support Center, the eOffer/eMod Help Desk or the GSA Advantage Help Desk. To reach a specific person, use the GSA staff directory.
GSA Contact Directory: Who to Call for What
| What you need | Who to contact |
|---|---|
| General questions, agency customers, GSA Global Supply orders | National Customer Service Center: 1-800-488-3111, ncsccustomer.service@gsa.gov (Sunday 9 p.m. to Friday 9:30 p.m. Eastern; email replies within one business day) |
| Vendors: MAS information, training, sales reporting, contract management resources | Vendor Support Center (vsc.gsa.gov) |
| Submitting an offer or a modification in eOffer/eMod | eOffer/eMod Help Desk: 1-866-472-9114, eOffer@gsa.gov |
| GSA Advantage accounts, login and ordering | GSA Advantage Help Desk: 1-877-472-3777, GSA.Advantage@gsa.gov |
| Small business help: meeting GSA, finding opportunities | Office of Small Business specialists (listed by state), or smallbusiness@gsa.gov |
| Small businesses facing payment delays or restrictive solicitations | OSB_gethelp@gsa.gov |
| A specific GSA employee | GSA staff directory (search by name and state) |
Contact details are from GSA’s official pages (GSA Contact Us, Office of Small Business, eOffer/eMod and the GSA Advantage job aid). GSA updates them from time to time, so check the source page if a number doesn’t work.
How to Find a Specific GSA Employee
GSA’s staff directory lets you search by first name, last name and state. GSA also publishes the full directory as a downloadable file on the same page. To protect employees’ privacy, GSA withholds address and phone details that could identify where someone lives.
Your GSA Contacts If You Hold a MAS Contract
Once you have a Multiple Award Schedule (MAS) contract, most questions should go to the people assigned to it rather than to a general help line:
- Contracting officer or contract specialist: the people who handle your offer and your modification requests. They’re named on your award and modification documents.
- Post-award GSA representative: GSA says a representative is assigned after award to work with you on your contract.
- Administrative contracting officer (ACO): the primary contact for mass modifications and subcontracting plan tracking.
- Industrial operations analyst (IOA): handles contractor assessments of your compliance.
For eOffer and eMod technical problems (login, FAS ID, uploads), call the eOffer/eMod Help Desk at 1-866-472-9114. For sales reporting, use the FAS Sales Reporting Portal and the Vendor Support Center’s guidance.
Small Business Contacts at GSA
GSA’s Office of Small Business has specialists assigned by state and region, listed with their phone numbers and emails on the Get help page. If you’re not sure who to write to, use smallbusiness@gsa.gov. Small businesses dealing with payment delays or restrictive solicitations can write to OSB_gethelp@gsa.gov. For free local help with government contracting, GSA also points businesses to APEX Accelerators.
GSA Regional Offices
GSA serves agencies across the country through regional offices. If you need someone in a particular region, search the staff directory by state, or call the National Customer Service Center and ask to be routed.
Related: 4 ways GSA customer service can market for you and the GSA Schedules program from the buyer’s perspective.
FAQs
What is the main GSA phone number?
The GSA National Customer Service Center: 1-800-488-3111, open Sunday 9 p.m. to Friday 9:30 p.m. Eastern. You can also email ncsccustomer.service@gsa.gov.
How do I contact GSA as a vendor?
Start with the Vendor Support Center at vsc.gsa.gov. For eOffer or eMod problems, call the eOffer/eMod Help Desk at 1-866-472-9114. If you already hold a contract, contact your assigned contracting officer or contract specialist.
Is there a GSA employee directory?
Yes. The GSA staff directory at gsa.gov/staff-directory lets you search employees by name and state, and GSA also publishes the full directory as a downloadable file.
How do I find my GSA contracting officer?
Your contracting officer or contract specialist is named on your contract award and modification documents. GSA also assigns post-award contacts, such as the administrative contracting officer for mass modifications and subcontracting plans, and an industrial operations analyst for contractor assessments.
Who helps small businesses at GSA?
GSA’s Office of Small Business has specialists assigned by state; their names and contact details are listed at gsa.gov/small-business/get-help. You can also write to smallbusiness@gsa.gov.
Already have a GSA contract?
Modifications, mass mods, option renewals, sales reporting and compliance are where contractors lose time and money. See how GSA Focus manages your contract after award.
