Cincinnati buys everything from road salt to professional services, and the City of Cincinnati awards contracts through its Office of Procurement at Two Centennial Plaza. The thing that trips up most first-time vendors is that the City splits the job across two separate systems. One handles registration and bidding. The other handles diversity certification. You need both if you want preference points, and people regularly register in one, assume they're done, and miss the other.
Here's how the pieces fit together, in the order you should tackle them.
Step 1: Register in Vendor Self Service (VSS)Every vendor who wants to do business with the City registers through Vendor Self Service (VSS). This is the front door. You create a profile, list your commodity codes (so the system knows what you sell), and from then on VSS is how you respond to the City's Invitations to Bid (ITBs).
Registration is free. The City charges nothing for any of its procurement portals, which is worth saying plainly because some third-party bid aggregators charge for access to the same public solicitations.
Take the commodity-code step seriously. Cincinnati uses those codes to decide who gets notified when a relevant solicitation posts. Pick too few and you won't hear about opportunities you'd qualify for. Pick a sensible set that matches your actual NAICS work and you'll get the right alerts.
Step 2: Know where bids actually get postedCincinnati posts solicitations across two channels depending on what it's buying, and you respond in the matching system.
- Invitations to Bid (ITBs) run through VSS. An ITB is the City's standard method for buying supplies or services valued at $50,000 or more. ITBs are price-driven: the City awards to the vendor that meets all quality requirements and offers the lowest price. If you're selling a defined product or a clearly specified service, this is your lane.
- RFPs, RFQs, and RFIs run through Bonfire. Requests for Proposals, Requests for Qualifications, and Requests for Information go through Bonfire, and you submit your response there unless the solicitation documents say otherwise. These are the evaluated, qualifications-and-approach procurements, common for professional and technical services.
Two systems, two response paths. Read each solicitation's instructions, because the document tells you which portal it lives in. Missing the right system is the most common reason a qualified bid never gets seen.
Step 3: Get certified through the Department of Economic InclusionRegistration lets you bid. Certification is what earns you preference. Cincinnati's Department of Economic Inclusion runs three business enterprise programs covering five certification types, built to open doors for small, minority-owned, and women-owned firms as both prime contractors and subcontractors on City work:
- Small Business Enterprise (SBE)
- Minority Business Enterprise (MBE)
- Women Business Enterprise (WBE)
You apply through the City's Vendor Compliance and Certification portal (the Diversity Compliance system at cincinnati.diversitycompliance.com), which is separate from VSS. That portal is also where certified firms track and report their inclusion participation on contracts, and it's shared with the Metropolitan Sewer District of Greater Cincinnati, so a certification there can carry across to MSD opportunities.
Why certification is worth the paperwork
The preferences are concrete. MBE and WBE firms can receive price preferences and preference points on City solicitations, which can change who wins a close bid. SBEs get specific contracting advantages on contracts under $50,000, the smaller awards that fall below the formal ITB threshold and are often a realistic first contract for a newer business.
If you're new to certification mechanics generally, our guides hub walks through how local, state, and federal programs differ and what documents each one wants. The document burden tends to repeat (formation papers, ownership proof, financials), so assembling it once pays off across applications.
How Cincinnati's program relates to state and federal certificationsThe City's SBE/MBE/WBE certifications are local. They apply to City of Cincinnati and MSD contracts. They don't automatically make you eligible for Ohio state set-asides or federal programs like 8(a), WOSB, or SDVOSB, which run through their own processes.
That distinction matters for where you spend your time. If you also bid on state agency or transit work, look at Ohio's MBE and EDGE programs and the Ohio DOT DBE program; our state programs directory maps which states recognize which certifications and how to apply. If your customers are corporations rather than government, a national credential like NMSDC's MBE or WBENC's WBE often carries more weight than a city certification, and the corporate program directory shows which buyers ask for what.
The honest read: stack certifications to match where your revenue actually comes from. A Cincinnati contractor selling mostly to the City and MSD should prioritize local Economic Inclusion certification. A firm chasing Fortune 500 supplier-diversity spend should prioritize NMSDC or WBENC.
Step 4: Find the right people and askCincinnati's procurement staff field vendor questions directly, and using them is faster than guessing.
- Office of Procurement — Two Centennial Plaza, 805 Central Avenue, Suite 234, Cincinnati, OH 45202. Phone 513-352-3209, email citypurchasing@cincinnati-oh.gov.
- Vendor support (for VSS registration help) — vendor.support@cincinnati-oh.gov.
- Department of Economic Inclusion — for SBE, MBE, and WBE certification questions and the compliance portal.
If a solicitation's requirements are unclear, ask before the deadline. Procurement offices generally answer questions through the formal channel named in the bid document, and clarifications often get shared with all bidders.
A realistic timelineRegister in VSS first; that part is quick and unlocks bidding immediately. Start your Economic Inclusion certification in parallel, because certification review takes longer and gathering ownership and financial documentation is usually the slowest part. While both are processing, watch VSS for ITBs and Bonfire for RFPs in your commodity codes, and respond to anything that fits even before your certification clears. Certification improves your odds; it isn't a prerequisite to bid.
Next stepIf pulling together formation documents, ownership proof, and financials for the Economic Inclusion application feels like the wall you're staring at, that's the part CertifyAll handles. You enter your business information and documents once, and we prepare and submit the certification applications you qualify for. Start your VSS registration today, and let the certification paperwork run in the background.
