W-2 vs 1099 vs C2C: How Staffing Firms Should Engage Contract Workers

The classification question comes up on nearly every contract placement, in job postings, and in recruiting conversations, and the vocabulary alone causes confusion: W-2 vs C2C, 1099 vs corp to corp, corp 2 corp vs W-2. The good news is that there are only three models, and once you understand who employs the worker and who carries the tax burden in each, the right answer for any placement usually becomes obvious.

The Three Models in One Minute

W-2 means the worker is an employee. An employer (your firm, or an employer of record on your behalf) withholds income taxes, pays employer payroll taxes, carries workers’ compensation, and issues a W-2 at year end.

1099 means the worker is an independent contractor. No taxes are withheld: the contractor receives gross pay, handles their own self-employment taxes, and gets a 1099-NEC at year end. The trade-off is misclassification risk: the IRS and state agencies decide who qualifies as a contractor, not you.

C2C (corp-to-corp) means your firm contracts with the worker’s own corporation or LLC, not with the individual. The worker is an employee of their own entity, which invoices you like any vendor. Corp to corp is common in IT and consulting jobs, where contractors maintain their own S-corps or LLCs.

W-2 vs 1099 vs C2C: Side-by-Side Comparison

When W-2 Is the Right Call

W-2 is the default for most staffing placements, and for good reason: the client controls the schedule and the work, which is exactly what employment law says makes someone an employee. Most client agreements require W-2 engagement for exactly this reason: it removes their co-employment and misclassification exposure.

The cost of W-2 is the employment burden itself: payroll taxes, workers’ comp, unemployment insurance, onboarding, and multi-state compliance. That burden is why staffing firms use an EOR. The EOR carries legal employment while you keep the placement, which turns W-2 from your biggest administrative headache into a service you resell. Our guide to employer of record payroll services covers how that works week to week.

When 1099 Works, and When It Blows Up

A legitimate 1099 contractor controls how the work gets done, uses their own tools, works for multiple clients, and carries business risk. Think of a consultant who sets their own hours and methods. When those facts are true, 1099 is clean and efficient.

The blow-up happens when a 1099 label is applied to what is functionally a job: set schedule, client supervision, single client, indefinite duration. The IRS, the Department of Labor, and state agencies each apply their own tests, and the penalties stack: back payroll taxes, interest, penalties, retroactive workers’ comp premiums, and in some states per-worker fines. If a placement looks like employment, it should be W-2, full stop.

Corp-to-Corp: How C2C Actually Works

The corp to corp definition is simple: in a C2C arrangement, the contractor has their own legal entity, usually an S-corp or LLC, and that entity contracts with your firm. You are not engaging an individual; you are engaging a vendor. The worker draws a paycheck from their own corporation, which files its own taxes and carries its own insurance.

C2C contracting works well for established consultants who want the tax planning flexibility of running their own entity. But it requires real vetting before the first invoice: confirm the entity exists and is in good standing, collect a W-9 for the corporation, verify their certificate of insurance if your client requires coverage, and document that the relationship is genuinely business-to-business. A C2C arrangement with a corporation that exists only on paper is a misclassification case with extra steps.

The Placement-Saving Question: What Happens When a Client Says “No C2C”?

This is the moment this guide exists for. You have a great candidate who works corp-to-corp. Your client’s MSA says W-2 only, which is increasingly common because clients do not want co-employment or misclassification exposure from someone else’s corporation. The placement is stalled.

The fix is conversion: the worker moves onto W-2 payroll for this assignment through an employer of record. Their corporation stays intact for other clients; this placement simply runs as employment. The same path works for converting a 1099 contractor to W-2 when a role looks like employment. With an EOR handling it, conversion takes days, not weeks: the worker onboards onto the EOR’s payroll, the client gets the W-2 engagement its policy requires, and your placement closes instead of dying. Understanding the difference between an EOR and a staffing agency helps here: the EOR employs; you still run the placement.

How BOSS Handles All Three Models

Most providers force a choice: EOR shops only do W-2, and compliance vendors only paper 1099s. BOSS runs all three lanes so the classification decision can be made on the facts, not on what your back office happens to support. Our comparison of EOR vs PEO vs AOR explains how the employment models behind each lane work.

• W-2 through EOR. BOSS becomes the legal employer: payroll, taxes, workers’ comp, onboarding, and 50-state compliance, with invoicing under your brand.
• C2C engagement. BOSS contracts with and pays your corp-to-corp contractors as vendors, with entity vetting and documentation handled.
• 1099 compliance. For legitimate independent contractors, BOSS manages compliant engagement and payment, including the documentation that survives an audit. Not sure how a worker should be classified? Upload the job description to the BOSS Contractor Status Analyzer and get a determination in about two minutes.

One placement might be W-2, the next C2C, the next 1099. Your recruiters sell; the classification runs correctly either way.

W-2 vs 1099 vs C2C FAQs