C2C vs W2 vs 1099 and What a Prime Vendor Should Verify

C2C vs W2 vs 1099 in plain words

C2C vs W2 vs 1099 comes down to one question, who is the consultant's employer. On W2 the staffing company employs the consultant and runs payroll. On C2C the staffing company contracts with the consultant's own corporation, and on 1099 it pays the consultant directly as an independent contractor, which is why most prime vendors avoid it.

The catch is that the label on the contract does not settle the question. The facts of the working relationship do, and both the IRS and the Department of Labor look past the paperwork to those facts.

W2 means the consultant is an employee of the staffing firm or sub-vendor, which withholds taxes, issues a Form W-2 and carries workers' compensation. C2C, or a corp to corp contract, means two businesses sign the agreement, the staffing firm and the consultant's corporation, and the consultant is paid by that corporation. 1099 means a person is paid as a nonemployee with no withholding, and the payments are reported on Form 1099-NEC. All three can appear under the same requisition, and our contract and payroll engagement models page shows where W2 payroll and C2C fit in our own work.

What a prime vendor should verify for a W2 contractor

A W2 contractor is the simplest case for a prime, because one company carries all the employer duties and you can check each of them.

Payroll and taxes come first. The IRS page on independent contractor or employee status says an employer must withhold and deposit income tax, Social Security and Medicare from an employee's wages, pay the employer share of Social Security and Medicare, and pay unemployment tax. Ask the sub-vendor to confirm it runs payroll itself or through a named payroll provider, and check that the consultant knows who pays them.

Form I-9 is next. The USCIS handbook section on Section 1 says the employee must complete Section 1 no later than the first day of employment. The handbook section on Section 2 says the employer must complete Section 2 within three business days of the date employment begins. On a W2 placement that employer is the sub-vendor, not the prime and not the end client, so ask for written confirmation that it was done on time. We cover documents and expiry dates in how to verify work authorization for contractors.

Workers' compensation is a state matter. The Department of Labor's workers' compensation overview tells private sector employees to contact their state workers' compensation board, because the federal programs do not cover them. So ask for a certificate that covers the state where the consultant actually works. With remote consultants that is often a different state from the client's, and it is easy to miss.

What to check on a corp to corp contract and the worker misclassification risk

C2C is common in IT staffing, and it is fine when the corporation is real. The prime's job is to confirm that it is.

Start with the IRS Form W-9, which a payee uses to give its correct taxpayer identification number to anyone who must file an information return about the payments. The name and number on it should match the corporation on the contract and the bank account on the invoice. Then look at how the business is taxed. The IRS instructions for Forms 1099-MISC and 1099-NEC say payments to a corporation, including an LLC taxed as a C or S corporation, are generally not reported on those forms. An LLC that is not taxed as a corporation does not get that treatment, and the tax classification box on the W-9 tells you which case you have.

Ask for insurance in the corporation's own name, with the coverage and limits your client contract requires. A one person corporation with no general liability or professional liability coverage pushes that risk up the chain to you. What else to collect before the resume moves is in our candidate submittal checklist.

The bigger risk is worker misclassification. The IRS weighs behavioral control, financial control and the type of relationship, and says there is no magic or set number of factors. It also says that a business that treats an employee as an independent contractor with no reasonable basis may be held liable for employment taxes for that worker. A consultant who works full time for one client, on the client's schedule, with tasks assigned by the client's manager, looks a lot like an employee, and a corporation in between does not make those facts go away. I am not a lawyer, and you should have one review your contracts, but I would not put a one person C2C corporation into a role run like a full time job without that advice.

Federal wage law adds its own test. The Department of Labor's independent contractor rulemaking page shows a final rule published in January 2024 and effective March 11, 2024, and a proposal announced in February 2026 to replace that analysis. The test was rewritten in 2021 and 2024 and proposed for change again in 2026, so check that page for the current status before you lean on any one version.

Why most prime vendors avoid the 1099 contractor

My view is that a prime vendor should keep 1099 contractors off staff augmentation roles, and the reasons are plain.

• There is no corporation and no staffing employer in between, so the classification question lands directly on whoever pays the consultant.
• Staff augmentation work is directed by the client every day, which is exactly the behavioral control the IRS looks at.
• USCIS says in its guidance on Form I-9 exceptions that a business does not complete Form I-9 for a true independent contractor, but federal law still prohibits contracting with one while knowing they are not authorized to work in the US. So the risk stays and the standard check disappears.
• There is no workers' compensation employer, and no withholding, so any mistake in the classification becomes the payer's tax problem.
• The payer still files Form 1099-NEC. The same IRS instructions say that for tax years beginning after 2025 the reporting threshold is $2,000, and it may be adjusted for inflation from 2027.

1099 fits a real independent business doing a defined project on its own terms. That is rarely what a VMS requisition for a full time developer describes. If a consultant wants independence, C2C through a real corporation is the cleaner route, and W2 is the simplest of all. The difference between a short and a long chain is explained in how layering works between primes and sub-vendors, and our compliance and background check standards page lists the checks we run.

Wanware staffs on W2 payroll and C2C for contract, contract to hire and direct hire roles, and our IT staffing services page lists the roles we cover.

Written by

Israr Kazmi

Israr Kazmi is the founder of Wanware Technologies, the IT staffing, recruitment and consulting division of iCareBilling LLC, an American health tech company based in Chicago, Illinois. He writes about technology, healthcare, health tech and AI automation, with a forward-looking view of where these fields are heading. He also covers recruitment, talent placement, vendor partnerships and careers on the corporate side of technology and healthcare.

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