Selling to the state: how COMMBUYS and Massachusetts bidding work

Key takeaways

• COMMBUYS is the Commonwealth of Massachusetts’ online procurement system, run by the Operational Services Division (OSD), and a vendor profile on it is free.
• Registering on COMMBUYS takes a legal business name, address, email, tax identification number and at least one UNSPSC commodity code, according to OSD.
• Statewide contract vendors pay OSD an administration fee of 1% of what buyers pay them, due within 45 days of the end of each quarter.
• The Small Business Purchasing Program is free and open to Massachusetts businesses with 50 or fewer full-time equivalent employees and $15 million or less in average annual gross revenue.
• Supplier Diversity Office certification is free, requires 51% ownership by eligible principals, and may take 30 to 60 days after a completed application.
• The City of Boston does not use COMMBUYS for its own contracts. Boston posts bids on its Supplier Portal at procurement.boston.gov.

COMMBUYS is the online system where Massachusetts state government posts bids, receives responses and makes purchases. If you own a small business in Boston or a nearby city or town and want the state as a customer, your first step is a free vendor profile on COMMBUYS. The profile gets you email notices of bids that match what you sell. Winning work takes more: a response to a posted solicitation and, for the largest contracts, a signed agreement with the Operational Services Division.

This guide covers what COMMBUYS is, who buys through it, how to register, how a bid moves from notice to award, what a statewide contract costs a vendor, and how two Supplier Diversity Office programs can help a small or diverse business compete. One section covers City of Boston contracts, which sit in a separate system.

What is COMMBUYS?

COMMBUYS is the Commonwealth of Massachusetts’ eProcurement portal, the website where state procurement and purchasing takes place. The Operational Services Division, a state agency inside the Executive Office for Administration and Finance, runs it from One Ashburton Place in Boston.

The Operational Services Division (OSD) is the state’s central purchasing office. The rules for executive branch purchases of commodities and services are in a state regulation, 801 CMR 21.00, which OSD lists among its statutes, regulations and policies.

Who buys through COMMBUYS?

COMMBUYS buyers include Massachusetts Executive Departments, cities, towns and other public bodies. According to OSD’s Steps to Consider guide (September 2025), the portal carries statewide contracts, departmental contracts and other state opportunities, and state entities make their purchases there.

Statewide contracts reach the widest group of buyers. OSD’s guide Is Statewide Contracting Right for You (October 2025) says Executive Departments are required by state law to use statewide contracts for the goods and services those contracts cover. The same guide lists other eligible buyers:

• Cities, towns, districts, counties and other political subdivisions
• The Legislative and Judicial Branches
• Independent public authorities and commissions
• Public libraries, public school districts and charter schools
• Public colleges and universities, and public hospitals owned by the Commonwealth
• Public purchasing cooperatives and certain nonprofits

How do you register as a COMMBUYS vendor?

COMMBUYS vendor registration is free and done online at commbuys.com. OSD’s guide puts the time to finish a profile at about 20 minutes. The agency’s COMMBUYS Vendor Registration page lists what to have ready and what happens after you sign up. The steps run in this order:

1. Gather your business legal name, address, email and tax identification number.
2. Pick at least one United Nations Standard Products and Services Code (UNSPSC). A UNSPSC is a commodity code that describes what you sell, and COMMBUYS emails you bids that match your codes. OSD posts a UNSPSC Look-Up Tool, and you can change codes at any time.
3. Choose a Seller Administrator, the person who manages the vendor profile.
4. Go to commbuys.com and click Register.
5. Change your password at first login. COMMBUYS passwords need at least eight characters with a letter and a number, and the system asks for a new one every 60 days.
6. List up to three email addresses for bid notices.

Registration alone does not make you a state supplier. OSD states that only awarded vendors may submit quotes and transact business with the Commonwealth through the system. Questions go to the OSD Help Desk at (888) 627-8283, Monday through Friday, 8 a.m. to 5 p.m., or OSDHelpDesk@mass.gov.

How does bidding on a Massachusetts state contract work?

Bidding on a Massachusetts state contract starts with a solicitation posted on COMMBUYS, which the state calls a Request for Response (RFR). An RFR is the document that states what the buyer wants, the terms, and how responses are judged. For statewide contracts, OSD says the state issues an Intent to Procure notice at least 40 days before the RFR comes out.

OSD’s Steps to Consider guide lays out what a bidder does once the bid is posted:

1. Acknowledge receipt of the bid in COMMBUYS so that you receive any amendments.
2. Read the full RFR and write down questions.
3. Attend the Bidders Conference if one is held, and send questions through the COMMBUYS Q&A feature.
4. Collect every required document.
5. Submit early, several days before the due date and during OSD Help Desk hours.

Late responses are not accepted, according to the same guide. OSD offers free vendor training, including a class called How the State Buys Goods and Services.

What is a statewide contract and what does it cost a vendor?

A statewide contract is an agreement OSD sets up with one or more vendors so that public buyers across Massachusetts can purchase at state-negotiated prices. OSD counts more than 100 statewide contracts, covering goods and services such as vehicles, office supplies, temporary staffing and IT. The division’s Become a Statewide Contract Vendor page says a business gets on one by answering a competitive solicitation and signing a contract with OSD or its designee.

Two limits apply. Statewide contracts are not often rebid or reopened to add vendors, so OSD advises watching its monthly procurement schedule. And an award does not guarantee sales: OSD’s guide says awarded vendors compete with each other and market themselves to buyers.

The 1% administration fee

Every statewide contract vendor pays an administration fee equal to 1% of the total dollar amount, adjusted for credits or refunds, that eligible buyers pay under the contract. Vendors file quarterly sales reports and pay through OSD’s Vendor Report Management (VRM) system. Payment is due within 45 days of the end of each quarter, on the dates in OSD’s administration fee FAQs:

Reporting quarter	Fee due
January 1 to March 31	May 15
April 1 to June 30	August 15
July 1 to September 30	November 15
October 1 to December 31	February 15

OSD treats a missed fee due date as a breach of contract.

What is the Small Business Purchasing Program?

The Small Business Purchasing Program (SBPP) is a free state program that directs Executive Departments to give special consideration to participating small businesses on smaller purchases. According to the Supplier Diversity Office’s SBPP page, the program applies to non-construction goods and services estimated at $250,000 or less per year.

A business qualifies for the SBPP if it meets all of these tests:

• Its principal place of business is in Massachusetts.
• It has been in business, and has filed taxes, for at least one year.
• It employs a combined total of 50 or fewer full-time equivalent employees across all locations.
• Its annual gross revenue is $15 million or less, based on a three-year average.

The SBPP does not cover building and public works construction, or non-recurring purchases of non-construction goods and services worth less than $10,000. Registration happens in the SDO Portal, not in COMMBUYS. You enter a Federal Employer Identification Number (or a Social Security Number if you are a sole proprietor filing Form 1040), and the Supplier Diversity Office checks it against Department of Revenue records. Validated firms get an approval notice within 24 to 48 hours.

What does Supplier Diversity Office certification do for a bidder?

Supplier Diversity Office certification makes a business eligible to count toward the diversity spending that state contractors and Executive Departments commit to. The Supplier Diversity Office (SDO) is the state agency, also at One Ashburton Place, that certifies diverse businesses and connects them with public contracts. Bidders on statewide contracts state a Supplier Diversity Plan spending percentage with certified partners, and OSD notes that a contractor’s own sales cannot count toward it.

The SDO’s Certification Program page lists the categories. The office itself certifies minority (MBE), women (WBE), Portuguese (PBE) and veteran (VBE) businesses. Service-disabled veteran (SDVOBE), LGBT (LGBTBE) and disability-owned (DOBE) businesses are certified through third-party organizations the SDO recognizes.

Under the state certification regulation, 425 CMR 2.00, eligible principals must own 51% or more of the business and hold dominant control of it, and the business must be independent and ongoing. Certification is free. The SDO says the process may take between 30 and 60 days after a completed application, and a Massachusetts-based applicant must watch a pre-certification webcast first. One exception: a business located in Springfield applies through that city’s own certification program.

Does COMMBUYS cover City of Boston contracts?

COMMBUYS does not carry the City of Boston’s own bids. Boston is a separate government with its own purchasing office, and its Procurement Department uses the City of Boston Supplier Portal at procurement.boston.gov. Vendors use that portal to register, submit bids and sign contracts with the city.

Boston lists open bids and RFPs on boston.gov and advertises contracting opportunities in the City Record, a weekly publication. A business that wants both state and Boston work needs two registrations: COMMBUYS for the Commonwealth and the Supplier Portal for the city. OSD says municipal organizations also post some opportunities on COMMBUYS.

What should you recheck before you act?

Several figures in this guide can change. Each was checked on November 13, 2026.

• The 1% statewide contract administration fee and its four due dates: confirm in OSD’s administration fee FAQs on mass.gov.
• The SBPP limits (50 employees, $15 million in revenue, $250,000 per year, the $10,000 exception): confirm on the Supplier Diversity Office SBPP page.
• The 30 to 60 day certification estimate and the certification categories: confirm with the Supplier Diversity Office at 617-502-8843.
• COMMBUYS registration requirements, password rules and Help Desk hours: confirm on OSD’s COMMBUYS Vendor Registration page.
• City of Boston vendor steps: confirm with the Procurement Department on boston.gov.

This guide is general information, not legal or tax advice. Rules and fees change; confirm the current requirements with the agency named before you file or pay.

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