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How to Register as a Vendor in Connecticut

Where
CTsource supplier registration (DAS State Contracting Portal)
Cost
Free (no fee stated in official DAS guides)
How long
unknown
Last checked
2026-09-27

See 27 open bids in Connecticut →

What it's for

CTsource is Connecticut's state contracting portal, run by the Department of Administrative Services (DAS). Its Bid Board lists solicitations for "all goods and services including information technology," and its Contract Board lists active contracts. Anyone can browse, but suppliers must "register to create a profile and start responding to business opportunities."

Have this ready

  • Legal entity name exactly as on IRS records
  • FEIN (or SSN for a sole proprietor)
  • Business type (corporation, LLC, sole proprietor, etc.) and business address
  • DUNS number, only if registering a branch location
  • Main contact's name, phone, email, and physical address
  • UNSPSC commodity codes for what you sell
  • Optional uploads later: insurance certificates, certifications

Steps

Per the DAS "CTsource Supplier Registration and Portal User Guide":

  1. From the CTsource page, open the supplier registration link.
  2. Agree to the General Disclaimer.
  3. Enter organization information: legal name, address, business type, and FEIN or SSN.
  4. Enter the main contact's details and create a username and password (at least 8 characters, mixing upper and lower case, numbers, and special characters).
  5. Select the UNSPSC categories that match your goods and services.
  6. Submit and check the main contact's email for the confirmation message.
  7. Log in to CTsource to download solicitation documents and respond by the deadline.

After you register

  • You'll get automated email alerts when the state publishes opportunities in your chosen UNSPSC categories.
  • Use "My Account" to update organization details, contacts, and categories, and to upload documents such as insurance certificates and certifications.
  • Bid tabulations are posted after bids close, which helps you see competitor pricing.
  • Renewal requirements were not stated in the official guide.

Watch out for

  • Construction is separate and may need prequalification: DAS Construction Services posts building projects on its own bid board (portal.ct.gov/das/construction-services/bidboard), and projects covered by the state's prequalification law require DAS contractor prequalification (thresholds not confirmed here). CTDOT runs its own, separate contractor prequalification and construction bidding; DAS says the two programs "are different and separate."
  • Categories drive alerts. Choose every UNSPSC code that applies or you'll miss notices.
  • Name must match IRS records.
  • Paid third-party "registration services" are unnecessary. No fee is stated for CTsource registration.

Certifications and bid preferences in Connecticut

Standard bid forms for Connecticut

These are the forms bidders are most often asked to sign or attach on Connecticut state bids. Each bid lists exactly which ones it needs, and many agencies attach their own copies, so always use the version in the bid documents when there is one.

Bid Proposal Form (Section 00 41 00) (00 41 00)
The price form you fill out to bid on a DAS state construction project; since July 2021 it also carries the affidavits and certifications that used to be filed separately.
When: All DAS state construction bids (under and over $500,000)
Standard Bid Bond (Section 00 43 16) (00 43 16)
A surety-backed guarantee that you will sign the contract and provide required bonds if you win.
When: DAS state construction bids (listed in the bid submission requirements for projects under and over $500,000)
Certificate of Authority (Section 00 40 14) (00 40 14)
A company-issued certificate showing the person signing your bid is authorized to bind the business.
When: All DAS state construction bids
General Contractor Bidder's Qualification Statement (Section 00 45 14) (00 45 14)
Describes your company, experience and finances so the state can judge whether you are a responsible bidder.
When: DAS state construction bids
DAS Contractor Prequalification Certificate
A one-year state certificate proving DAS has approved your company for a work classification; apply online through CT Gateway.
When: Public construction projects over $1,000,000 in designated classifications; DAS bid package lists it for projects over $500,000
DAS Small Business (SBE) / Minority Business (MBE) Set-Aside Certification
State certification that your business is a small or minority-owned business, needed to bid on set-aside projects.
When: State construction set-aside bids (listed in the under-$500,000 bid package)
CHRO Bidder Contract Compliance Monitoring Report
Reports your workforce and subcontractor makeup to the Commission on Human Rights and Opportunities under state contract-compliance rules.
When: DAS state construction bids under $500,000 (per DAS bid instructions)
Gift Certification (OPM Ethics Form 1) (OPM Form 1)
You certify no gifts were given to state employees in connection with the contract.
When: State contracts worth $50,000 or more in a year
Campaign Contribution Certification (OPM Ethics Form 2) (OPM Form 2)
You certify that principals have not made restricted political contributions and list any solicitation of contributions.
When: State contracts worth $50,000 or more in a year
Consulting Agreement Affidavit (OPM Form 5) (OPM Form 5)
You disclose any consultant or lobbyist you paid in connection with getting the contract.
When: State goods/services contracts of $50,000 or more
Ethics Affirmation for Bid Contracts (OPM Form 6A) (OPM Form 6A)
You affirm you have read and will follow the state's contractor ethics rules (6B no-bid and 6C subcontractor versions also exist).
When: Large state contracts over $500,000
Payroll Certification - Public Works Projects (Prevailing Wage)
Weekly certified payroll showing you paid workers the state prevailing wage.
When: State-funded public works construction projects subject to prevailing wage

Common questions

Is it free to register as a vendor in Connecticut?

Free (no fee stated in official DAS guides)

Where do I register to bid in Connecticut?

CTsource supplier registration: https://portal.ct.gov/das/ctsource/create-a-ctsource-account-for-doing-business-with-the-state

How long does Connecticut vendor registration take?

unknown

What forms do I need to bid on Connecticut state contracts?

Each bid lists its own forms. Ones bidders are commonly asked for include: Bid Proposal Form (Section 00 41 00); Standard Bid Bond (Section 00 43 16); Certificate of Authority (Section 00 40 14); General Contractor Bidder's Qualification Statement (Section 00 45 14); DAS Contractor Prequalification Certificate. The full list with links to the official blank forms is on this page.

Sources

FindMyBids isn't affiliated with any government agency. Registration is free or low cost on official sites; you don't need to pay a third party. Always follow the official portal's instructions.

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