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GSA Logo U.S. General Services Administration
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Buy through us
Explore buy through us
Category management
Government property for sale or lease
Personal property (tangible goods)
Real property (real estate and buildings) for public use
Real property sales
Vehicle sales
Products and services
Human capital
Industrial products and services
Office management
Professional services
Security and protection
Transportation and logistics services
Purchasing programs
Assisted acquisition
Commercial platforms
Emergency acquisition basic ordering agreements
Federal strategic sourcing initiative
Fleet management
HCaTS and HCaTS SB
OASIS and OASIS SB
Requisition programs
State and local programs
Shared services
Payroll services
Support services for CABs
Sell to government
Explore sell to government
Step 1: Learn about government contracting
Ways you can sell to government
How to access contract opportunities
Conduct market research
Step 2: Compete for a contract
Register your business
Certify as a small business
Become a schedule holder
Market your business
Research active solicitations
Respond to a solicitation
What to expect during the award process
Step 3: Manage your contract
Comply with contractual requirements
Handle contract modifications
Monitor past performance evaluations
Real estate
Explore real estate
Design and construction
3D-4D building information modeling
Computer-aided design standards
Engineering
Project management information system
Prospectus thresholds
Facilities management
Security
Tenant services
Water quality management
Our properties
Owned and leased properties
Regional buildings
Renting property
Real estate services
Leasing
Real property disposal
Reimbursable services (RWA)
For businesses seeking opportunities
For workers in federal buildings
Voice of the customer
Workplace optimization
Commercial coworking
Federal coworking
Policy and regulations
Explore policy and regulations
Acquisition management policy
Aviation management policy
Information technology policy
Real property management policy
Relocation management policy
Travel management policy
Vehicle management policy
Regulations
Federal acquisition regulations
Federal management regulations
Federal travel regulations
Small business
Explore small business
Small business goals
Register your business
Explore business models
Research the federal market
Subcontracting and other partnerships
Forecast of contracting opportunities
Small business resources
Small business contacts
Small business events
Videos
Travel
Explore travel
Plan a trip
Per diem rates
Transportation (airfare rates, POV rates, etc.)
Lodging
Travel charge card
Travel and lodging services
E-gov travel service (ETS)
Rideshare
Travel category schedule
Federal travel regulation
Technology
Explore technology
Build websites and digital services
Purchasing programs
Cloud computing services
Cybersecurity products and services
Governmentwide acquisition contracts
MAS information technology
USAccess
Government initiatives
Artificial Intelligence
Cybersecurity
Emerging citizen technology
FedRAMP
Federal identity, credentials, and access management
Robotic process automation community
Technology modernization fund
Training
About us
Explore about us
Background and history
Overview
Mission and strategic goals
Role in presidential transitions
Careers
Get an internship
Launch your career
Elevate your professional career
Discover special hiring paths
Resources and related links
Events and training
Our training programs
Newsroom
Agency blog
Congressional testimony
GSA does that podcast
News releases
Speeches
Videos
Organization
Leadership directory
Federal Acquisition Service
Public Buildings Service
Staff offices
Regions
Region 1 | New England
Region 2 | Northeast and Caribbean
Region 3 | Mid-Atlantic
Region 4 | Southeast Sunbelt
Region 5 | Great Lakes
Region 6 | Heartland
Region 7 | Greater Southwest
Region 8 | Rocky Mountain
Region 9 | Pacific Rim
Region 10 | Northwest/Arctic
Region 11 | National Capital Region
Contact us
  1. Home
  2. Buy through us
  3. Purchasing programs
  4. Multiple Award Schedule
  5. Help with MAS contracts to sell to government
  6. Helpful resources for MAS sellers

Helpful resources for MAS sellers

If you’re a Multiple Award Schedule seller, whether prospective or current, this page shows you how access helpful resources at every stage of your MAS journey. This page also lists the multiple websites both current and prospective MAS sellers need to use. 

Talk to someone

In addition to your assigned contracting officer or specialist, a GSA representative assigned to you post-award will work with you during the contract term to provide support and education to make sure you remain contractually compliant.

  • If you have a current Schedule contract, your administrative contracting officer, or ACO, is your primary contact to handle mass modifications and subcontracting plan tracking.
  • Your industrial operations analyst is responsible for reviewing contract compliance, including sales reporting, adjustments, industrial funding fee collection, and periodic assessments virtually or in person.

We have a contact center available via phone, email, or chat 24/5.

If you want to voice concerns about unfair practices, disparate treatment, or unrealistic barriers in our acquisition processes, contact our Office of the Procurement Ombudsman.

If you are a small business, you can use our Office of Small and Disadvantaged Utilization, the U.S. Small Business Administration, or APEX accelerators (formerly called procurement technical assistance centers).

If you need help with state and local governments, contact Frank Mayer at frank.mayer@gsa.gov or 212-264-1179.

Other resources

If you areAnd you want toUseAdditional info
A prospective sellerGet a MAS contractVendor Support Center website and the MAS roadmapAlthough MAS is the premier vehicle for government sales, it is not a mandatory source. Just getting a contract does not guarantee sales from government agencies.
An existing sellerExtend your existing MAS contractThe streamlined offer process 
A prospective sellerSee what products and services are eligible under MASThe SIN look-up table on the MAS homepageThere are also links to landing pages with top tasks for buyers and sellers of MAS products and services.
A prospective sellerComplete the mandatory pathways to success requirementThe pathways to success slides [PDF - 2 MB] 
A prospective sellerComplete your mandatory readiness assessmentThe readiness assessment 
A prospective or existing sellerComply with contractual requirements when preparing your offer or managing your contractThe MAS solicitation [PDF]Do not forget to review the attachment(s) for your categories.
A prospective sellerGet the templates to use for your offerThe required templatesDo not forget to also use the SIN look-up table and find SIN-specific templates in the Resources column
A prospective seller of servicesFind a wage to proposeWage determinationsYou cannot propose any rates outside of the MAS solicitation (including wage determination and revisions). Collective bargaining agreements are only allowed at the order level.
An existing MAS contractorMarket your contractMarketing info on how customers find you, how to use the GSA logo, and how to analyze government spending 
An existing MAS contractorCreate or submit modifications after awardeOffer/eMod websiteOur eOffer/eMod user guide shows the steps you have to take to submit a mod and the types of mods you need to select. You can select the Table of Contents in the upper left to skim. Do not use the user guide as a substitute for hands-on training.
An existing MAS contractorRegister your contract, address SIP, EDI, etc.Contractor start-up kit [PDF] on vsc.gsa.gov 
An existing MAS contractorCompliance on ordering, scope, shipping, sustainability, Trade Act Agreements, etc.Contractor compliance on vsc.gsa.gov 
An existing MAS contractorUpload your electronic catalog onto GSA AdvantageSchedule Input Program info and SIP user guide [PDF]If you receive notification that you are FAS Catalog Platform, or FCP, eligible, please take the steps to transition to FCP as soon as possible. Then you will not need to use SIP or EDI to manage catalog updates.
An existing MAS contractorPreparing and submitting your electronic catalog using EDIElectronic Data Interchange info and EDI user guide [DOC]If you receive notification that you are FAS Catalog Platform, or FCP, eligible, please take the steps to transition to FCP as soon as possible. Then you will not need to use SIP or EDI to manage catalog updates.
An existing MAS contractorSubmit, modify, or view your electronic catalog data in our newest systemFAS Catalog Platform (sign-in required)When you use FCP, you no longer need to use SIP or EDI.
An existing MAS contractorGet help with transitioning to the FAS Catalog PlatformFCP help page and FCP user guide (download from upper right of help page)See Page 42 (Section 6) of the user guide for the first steps to transition your contract to FCP.
An existing MAS contractorReport your salesFAS Sales Reporting website, quick start guide [PDF], FAS registration and authentication steps [PDF], and FAS SRP Excel template [XLS] 
An existing MAS contractorLearn more about managing your MAS contract after awardRequirements after getting a MAS contract 
An existing MAS contractorLearn how to modify your contractModification and mass modification guidanceThis includes the most recent MAS Modification Guide which is essential for contact specialists, contracting officers, and contractors. It also includes a link to the most current version of the modification price proposal templates for products and services and training for those contractors who are not in the FAS Catalog Platform, or FCP.
Small businessGet helpUse our Office of Small and Disadvantaged Utilization, the U.S. Small Business Administration, or APEX accelerators (formerly called procurement technical assistance centers).

They can help you:

  • Complete your SAM.gov registration.
  • Identify which agencies and offices may need your products or services and how to connect with them.
  • Determine whether you are ready for government opportunities and how to succeed.
  • Navigate solicitations and potential funding opportunities.
  • Receive notifications of government contract opportunities on a regular basis.
  • Network with buying officers, prime contractors, and other businesses.
  • Resolve performance issues and prepare for audit, only if the service is needed, after receiving an award.

Other websites you need to use

WebsiteHow to access itWhat you can do
Buy.gsa.govhttps://buy.gsa.gov/Although the site is mostly for federal agency buyers, you can join Interact communities to better communicate and learn from each other
MAS InteractSelect the Join button and follow directionsYou can get important program updates such as solicitation refreshes, MAS newsletters, catalog management, training, and more
Catalog Management OfficeSelect the Join button and follow directionsMAS contractors can stay up to date on the modernization, including our roll-out of FCP, which will replace the antiquated SIP.
SAM.govUse your Login.gov credentials to access all of the contentReview contractor opportunities including the MAS Solicitation, do an entity registration check, annual reps and certs check in accordance with FAR 52.212-3, and check exclusions for both entity and authorized negotiators 
GSA Advantagehttps://www.gsaadvantage.govSearch for products and services and do market research. All vendor catalog files and text files (I-FSS-600) are posted to GSA Advantage
eLibraryhttps://www.gsaelibrary.gsa.govSearch by contract number, SIN number, MAS as a whole, to see the types of items or services currently awarded. You can also see what others in your same industry are selling.
Eligibility determinationsUse the look-up tableThese are buyers outside of the federal government that are eligible to buy MAS products and services.
FAS Sales Reporting Portalhttps://srp.fas.gsa.gov/Submit monthly/quarterly sales figures, remit IFF, perform sales adjustments, and complete contract closeout sales.
Vendor Support Centerhttps://vsc.gsa.govInformation and training for new and current contractors to learn how to obtain and manage your MAS contract.

Training

Register for monthly MAS office hours for industry. (Access previous sessions.)

Tell us what you think

 
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Last updated: Mar 21, 2025
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    • Overview
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      • Roadmap to get a MAS contract
      • Team up with other MAS contractors
      • Consider transactional data reporting
      • SCLS wage determinations applicable to MAS contracts
      • Requirements after getting a MAS contract
      • Helpful resources for MAS sellers

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