Skip to main content

An official website of the United States government

Here’s how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

GSA Logo U.S. General Services Administration
    • Explore buy through us
    • Category management
    • Government property for sale or lease
      Toggle submenu
      • Personal property (tangible goods)
      • Real property (real estate and buildings) for public use
      • Real property sales
      • Vehicle sales
    • Products and services
      Toggle submenu
      • Human capital
      • Industrial products and services
      • Office management
      • Professional services
      • Security and protection
      • Transportation and logistics services
    • Purchasing programs
      Toggle submenu
      • Assisted acquisition
      • Commercial platforms
      • Federal strategic sourcing initiative
      • Fleet management
      • HCaTS and HCaTS SB
      • OASIS and OASIS SB
      • Requisition programs
      • State and local programs
      • Emergency acquisition basic ordering agreements
    • Shared services
      Toggle submenu
      • Payroll services
      • Support services for CABs

    Featured Topics

    • Multiple Award Schedule Governmentwide contracts for products and services at volume discount pricing.
    • Auctions Federal assets available via auction to the general public.
    • Explore sell to government
    • Step 1: Learn about government contracting
      Toggle submenu
      • Ways you can sell to government
      • How to access contract opportunities
      • Conduct market research
    • Step 2: Compete for a contract
      Toggle submenu
      • 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
      Toggle submenu
      • Comply with contractual requirements
      • Handle contract modifications
      • Monitor past performance evaluations

    Featured Topics

    • Contract opportunities on SAM.gov Search current federal contract opportunities and procurement notices.
    • Forecast of contracting opportunities Anticipated contracts offered by GSA.
    • Vendor support center Research the federal market, report sales, and upload contract information.
    • Explore real estate
    • Design and construction
      Toggle submenu
      • 3D-4D building information modeling
      • Computer-aided design standards
      • Engineering
      • Project management information system
      • Prospectus thresholds
    • Facilities management
      Toggle submenu
      • Security
      • Tenant services
      • Water quality management
    • Our properties
      Toggle submenu
      • Owned and leased properties
      • Regional buildings
      • Renting property
    • Real estate services
      Toggle submenu
      • Leasing resources
      • Real property disposal
      • Reimbursable services (RWA)
      • For businesses seeking opportunities
      • For workers in federal buildings
      • Voice of the customer
    • Workplace optimization
      Toggle submenu
      • Commercial coworking
      • Federal coworking
      • Space Match
    • Explore historic buildings

    Featured Topics - Real Estate

    • Historic preservation tools and resources Procedures for maintaining and repairing historic buildings.
    • Real property disposal Dispose or acquire excess federal real property including buildings or land.
    • 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
      Toggle submenu
      • Federal acquisition regulations
      • Federal management regulations
      • Federal travel regulations

    Featured Topics

    • Forms Search for a government form.
    • Per diem FAQs Frequently asked questions about per diem rates and related topics.
    • Explore small business
    • Small business goals
    • Register your business
      Toggle submenu
      • Explore business models
      • Research the federal market
      • Subcontracting and other partnerships
    • Forecast of contracting opportunities
    • Small business resources
      Toggle submenu
      • Small business contacts
      • Small business events
      • Videos

    Featured Topics

    • Forecast tool Information on planned federal contracting opportunities.
    • Socio economic categories Check your eligibility for small-business set-asides.
    • Training resources Suggested training for doing business with us.
    • Explore travel
    • Plan a trip
      Toggle submenu
      • Per diem rates
      • Transportation (airfare rates, POV rates, etc.)
      • Lodging
      • Travel charge card
    • Travel and lodging services
      Toggle submenu
      • E-gov travel service (ETS)
      • Rideshare
      • Travel category schedule
    • Federal travel regulation

    Featured Topics

    • Per diem rates look-up Allowances for lodging, meal and incidental costs while on official government travel.
    • Mileage reimbursement rates Reimbursement rates for the use of your own vehicle while on official government travel.
    • Explore technology
    • Build websites and digital services
    • Purchasing programs
      Toggle submenu
      • Cloud computing services
      • Cybersecurity products and services
      • Governmentwide acquisition contracts
      • MAS information technology
      • USAccess
    • Government initiatives
      Toggle submenu
      • Artificial Intelligence
      • Cybersecurity
      • Emerging citizen technology
      • FedRAMP
      • Federal identity, credentials, and access management
      • Robotic process automation community
      • Technology modernization fund
    • Training

    Featured Topics

    • Challenge.gov Government sponsored challenges and prize competitions.
    • Data.gov Access U.S. government data.
    • Multiple award schedule IT category Information technology products, services and solutions.
    • Explore about us
    • Background and history
      Toggle submenu
      • Overview
      • Mission and strategic goals
      • Role in presidential transitions
    • Careers
      Toggle submenu
      • Get an internship
      • Launch your career
      • Elevate your professional career
      • Discover special hiring paths
      • Resources and related links
    • Events and training
      Toggle submenu
      • Events, training, and request a speaker
      • Our training programs
    • Newsroom
      Toggle submenu
      • Agency blog
      • Congressional testimony
      • GSA does that podcast
      • News releases
      • Speeches
      • Videos
    • Organization
      Toggle submenu
      • Leadership directory
      • Federal Acquisition Service
      • Public Buildings Service
      • Staff offices
    • Regions
      Toggle submenu
      • 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

    Featured Topics

    • Blog Read the latest GSA news, updates and analysis.
    • Careers Learn what we have to offer.
  • Per diem lookup
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
Federal strategic sourcing initiative
Fleet management
HCaTS and HCaTS SB
OASIS and OASIS SB
Requisition programs
State and local programs
Emergency acquisition basic ordering agreements
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 resources
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
Space Match
Explore historic buildings
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
Events, training, and request a speaker
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. Federal strategic sourcing initiative
  5. FSSI OS4
  6. FAQ

FSSI OS4 frequently asked questions

Where can I find help or get more details?

Questions on Office Supplies Fourth Generation or OS4 may be sent to ncsccustomer.service@gsa.gov. Learn more about MAS 75 (now under the Multiple Award Schedule Office Management Category).

Why use FSSI OS4?

By purchasing office supplies through OS4, customers can ensure that they are meeting all relevant mandates and procurement regulations, most notably for sustainable items. The items on OS4, where applicable, meet product guidelines for green products, and when purchased in a large quantity (by meeting the minimum purchasing thresholds), help reduce the number of deliveries and transactions.

In addition, by using your GSA SmartPay card, you will automatically get the discounted OS4 prices, and your agency will benefit by getting credit card refunds in the process. Unlike buying office supplies retail, you can be assured that you are not paying sales tax, which your agency can monitor by receiving spend data to help keep prices down in the future. The contract prices have been proven to be better than any mass pricing discounts agencies can get on their own, and OS4 is easy to use, especially through GSA Advantage.

How do I use OS4?

Our goal is to make OS4 easy to use, and make it as easy as possible for all purchasing authorities and purchase cardholders to procure office supplies that are compliant with all applicable mandates.

For orders at or below the micro-purchase threshold, use your GSA SmartPay card to make a purchase in the FSSI Office Supplies aisle of GSA Advantage. This is available on GSA Advantage by selecting “Office Supplies and Equipment – FSSI” on the left side of the page.

FedMall, walking into a vendor’s store, or otherwise contacting the vendor directly are other means of buying office supplies through OS4, though they are not as streamlined or easy to measure as purchasing through GSA Advantage.

For orders over the micro-purchase threshold, check with your Contracting Officer to understand your agency’s purchasing policy.

Who may use OS4?

GSA Eligibility Order 4800.21, Eligibility to Use GSA Sources of Supply and Services [PDF - 446 KB] provides detailed information regarding the agencies and organizations that are eligible to use GSA Schedule contracts to include:

  • All federal agencies and activities in the executive, legislative, and judicial branches.
  • Government contractors authorized in writing by a federal agency pursuant to 48 CFR 51.1.
  • Mixed ownership government corporations* (as defined in the Government Corporation Control Act of 1945, as amended).
  • The government of the District of Columbia.
  • Other activities and organizations authorized by statute or regulation to use GSA as a source of supply.

* There are 18 of these quasi-government organizations, including the Tennessee Valley Authority, the Federal Deposit Insurance Corporation, and Amtrak. These organizations typically have fewer regulatory guidelines for purchasing than the federal government, and are authorized by statute to use the Schedules program.

Are federal agencies required to purchase from OS4?

Many agencies have mandated the use of OS4. Some agencies have designated which OS4 contractors to utilize, based on specific agency mandates. The information is provided through your agency’s FSSI representative.

What are the delivery requirements?

Standard delivery is four business days after receipt of order. Express, desktop, secure, and international delivery are all available and may carry an extra fee. Orders below the minimum threshold of $100 (may be lower depending on the vendor) may also carry a convenience fee. In most circumstances, purchasing authorities and purchase cardholders can and should plan ahead for the procurement and delivery of office supplies. By doing so, the federal workforce generates two major benefits: First, we significantly decrease costs, as overnight delivery can add (15-20%) of the cost of the item with some vendors; second, by placing fewer and larger orders, we reduce our impact on the environment and streamline the process for our employees.

Why is there a minimum order requirement? What if I don’t need to order that much?

One significant way to reduce the total cost of your order is to increase the order size. This also reduces the costs of all items in the OS4 over time. This process results in less paperwork, less tracking, and less reconciliation. In addition, larger and fewer orders means that there are fewer trucks on the road making deliveries, reducing the federal government’s financial footprint. We recommend that you consolidate your orders so that you have fewer total transactions to manage. However, because it is not always possible to combine orders or otherwise meet the minimum order amount, some OS4 vendors will process smaller orders with an additional convenience fee.

What are the competition requirements?

Orders below the micro-purchase threshold can be placed with any Schedule contractor that can meet your agency’s needs. For orders exceeding the micro-purchase threshold, follow the procedures in FAR 8.405-1 or 8.405-2.

Are these contracts consistent with AbilityOne?

Yes. All contractors are required to remain AbilityOne certified resellers.

Does OS4 support small businesses?

The agency is also committed to increasing small business participation in strategic sourcing initiatives and OS4 is expected to increase the volume of spend going to small businesses, while also delivering government savings. GSA estimates that more than $8 out of every $10 spent on OS4 purchasing will go to small businesses.

Does OS4 promote sustainability?

Yes. The items on the OS4 contracts meet Comprehensive Procurement Guidelines (CPG), provide for toner recycling, and include a vast array of remanufactured items. The delivery terms reduce the total number of shipments.

What if the product I want to buy is not on OS4?

In general, the OS4 program includes a wide range of products, brands, and part numbers, although not every brand or part number may be included. By purchasing office supplies through OS4, customers are able to ensure that they are meeting all relevant mandates and procurement regulations (TAA, EO 13834). We recommend purchasing an item that is a “close second” to the office supply you are intending to buy.

What additional discounts are included in OS4?

OS4 includes a Delivery Tier Discount structure. Percentage discounts are included on orders of $300 and more with some vendors.

My favorite vendor is not part of OS4, may I still order from them?

For a list of OS4 awarded vendors, visit Office Supply Fourth Generation Awarded Vendors. OS4 was a full and open competition, and extensive competition was received. Not every proposal submitted received an award.

What if I cannot find the item I am looking for on OS4?

If you cannot find the item you are looking for, we recommend considering a similar item since OS4 items meet all relevant federal procurement mandates.

OS4 Resources

FSSI OS4: Best-in-Class Solution for Office Products and Services

FSSI OS4 Webinar [PDF - 2 MB]

Print Page Email Page
Last updated: Jun 17, 2025
Top
    • Overview
    • Building Maintenance & Operations
    • FSSI OS4
      • OS4 awarded vendors
      • How to order with FSSI OS4
      • FAQ
      • FSSI OS4 resources
      • FSSI OS4 sustainable solutions
    • Maintenance Repair Facility Supplies Generation 2

Home

  • Resources for …
    • Americans with Disabilities
    • Citizens and Consumers
    • Federal Employees
    • GSA Employees
    • Native American affairs
    • Presidential & Congressional Commissions, Boards or Small Agencies
    • Small Business
  • Governmentwide Initiatives
    • Centers of Excellence
    • Digital experience
    • Emergency response
    • Federal Cybersecurity
    • ID, Credentials, and Access Management
    • Information Quality
    • Open Data
    • Technology Modernization Fund
  • Contact Us
  • Organization
    • Leadership Directory
    • Staff Directory
  • References
    • Annual reports
    • Plain Language
    • Budget and Performance
    • Catalogs
    • Orders & Directives
    • Forms
  • Website Information
    • A-Z Index
    • Report a website issue
    • Sitemap
  • Also of Interest
    • Data.gov
    • Whitehouse.gov
  • Tools
    • eBuy
    • eLibrary
    • Contracting forecast tool
    • GSA Advantage
    • GSA Auctions
GSA logo
  • Facebook
  • X
  • LinkedIn
  • YouTube
  • instagram
  • Blog
  • email

JOIN THE CONVERSATION

GSA.gov

An official website of the U.S. General Services Administration

  • Accessibility statement
  • Website Policies
  • Reports
  • Office of the Inspector General
  • No FEAR Act
  • FOIA Requests
  • Board of Contract Appeals
Looking for U.S. government information and services?
Visit USA.gov

PER DIEM LOOK-UP

1 Choose a location

Error, The Per Diem API is not responding. Please try again later.

No results could be found for the location you've entered.

Get my location

OR

OR

Rates for Alaska, Hawaii, and U.S. territories and possessions are set by the Department of Defense.

Rates for foreign countries are set by the Department of State.

2 Choose a date


OR

Rates are available between 10/1/2022 and 09/30/2025.

The End Date of your trip can not occur before the Start Date.

 
 
Additional terms and conditions

Traveler reimbursement is based on the location of the work activities and not the accommodations, unless lodging is not available at the work activity, then the agency may authorize the rate where lodging is obtained.

Unless otherwise specified, the per diem locality is defined as "all locations within, or entirely surrounded by, the corporate limits of the key city, including independent entities located within those boundaries."

Per diem localities with county definitions shall include"all locations within, or entirely surrounded by, the corporate limits of the key city as well as the boundaries of the listed counties, including independent entities located within the boundaries of the key city and the listed counties (unless otherwise listed separately)."

When a military installation or Government - related facility(whether or not specifically named) is located partially within more than one city or county boundary, the applicable per diem rate for the entire installation or facility is the higher of the rates which apply to the cities and / or counties, even though part(s) of such activities may be located outside the defined per diem locality.