What Is a Vendor in C2C Staffing?
A vendor in C2C (corp-to-corp) staffing is any company in the contract supply chain between you and the end client. Vendors range from the prime vendor (who owns the client relationship) down to subs and layers (who subcontract work and take cuts). Each level adds overhead to your rate and slows communication.
Prime Vendor: Direct Client Relationship
A prime vendor owns the client contract. They bid directly, hold the statement of work (SOW), and own the client relationship. When a recruiter says "we placed you at Amazon," they're usually the prime.
Prime vendors negotiate rates with the client, then offer you a cut. They keep 10–25% as commission in most cases. If the client pays $100/hour, the prime might offer you $75–85/hour and keep the spread.
Prime vendors do the heavy lifting: writing proposals, managing compliance (taxes, insurance verification), handling billing, and dealing with client escalations. If something breaks, the prime takes the heat.
Sub Vendor: One Layer Below Prime
A sub vendor (or "sub") is hired by a prime vendor to fill the role. Subs don't own the client relationship—they source and manage talent for the prime.
Here's where your rate gets compressed. The client pays the prime $100/hour. The prime pays the sub $85/hour. The sub then offers you $70–75/hour. That's two layers of margin stacked on top of your pay.
Subs source candidates, run interviews, and handle day-to-day candidate logistics. They're the middleman and they take 10–15% as their fee.
Layer Vendor (or "Layer"): Multiple Levels Deep
A layer vendor is anyone deeper than one level below the prime. You can have sub-to-sub chains: prime → sub 1 → sub 2 → sub 3 → you. Each layer takes 8–12% margin.
Three layers deep and your rate drops 25–35% from what the client actually pays. On a $100/hour contract, you're seeing $65–70/hour after three vendor cuts.
Layers exist because staffing is fragmented. One vendor specializes in tech recruiting. Another specializes in visa compliance. Another specializes in a specific vertical. They hand off candidates down the chain.
Why Vendor Chains Matter to You
Rate compression is real. Every vendor layer eats margin. Cutting out layers means more money in your pocket.
If you know a client directly or find a prime with a thin bench, you bypass the sub/layer chain. Calculate your effective hourly rate against W2 salary to see if the margin loss is worth the contract length and flexibility.
Vendor communication chains slow down feedback. Issues with timesheets, rate disputes, or technical problems ripple through layers. Direct prime relationships move faster.
Vendor stability matters. If a sub or layer vendor goes under, your contract can be terminated or reassigned without your consent. Prime vendors have more structural stability because clients depend on them.
How to Identify Your Vendor Level
Ask the recruiter or staffing company point-blank: "Are you the prime vendor on this contract?" If they say no, ask who the prime is and how many layers exist between you and the client.
Check your contract paperwork. Your Statement of Work (SOW) should list the prime vendor and any vendor agreements. If it's vague, escalate before signing.
On hotlists and bench sales, vendors often don't disclose the chain upfront. Push for clarity on margins and who owns the client relationship.
Vendor Chain Best Practice
When comparing contract offers, always normalize for vendor level. A $85/hour sub contract might be better than a $100/hour three-layer deal if the sub is stable and communication is direct.
If you're applying through platforms that catch fresh C2C postings early, you increase odds of landing prime vendor roles before they're passed down the chain. Speed to apply often translates to fewer intermediaries.
The Bottom Line
Vendors are inevitable in C2C staffing. The question is how many layers sit between you and the money. Prime is fastest and pays best. Subs are common and still solid. Layers compress rates and add friction. Know which one you're signing with before you commit.