1099 vs. W-2: How Worker Classification Is Decided
The IRS common law rules, the separate wage-and-hour test, state ABC tests, what misclassification costs a worker in real dollars, and how to challenge it with Form SS-8 and Form 8919.
The Wallet Wisdom Team
Editorial Team
Your classification is not a choice anybody gets to make — not you, not the company, not the contract you both signed. It's a conclusion about how the work is actually done, and different agencies reach it using different tests. You can be an independent contractor for one purpose and an employee for another, at the same job, in the same week.
That sounds like a technicality. It's worth several thousand dollars a year, plus unemployment insurance, workers' compensation, and overtime, so it's worth twenty minutes.
What the IRS looks at
The IRS applies common law rules organized into three categories of evidence, and it's explicit that no single one decides it: "There is no 'magic' or set number of factors that 'makes' the worker an employee or an independent contractor and no one factor stands alone in making this determination."
- Behavioral control. "Does the company control or have the right to control what the worker does and how the worker does his or her job?" Set hours, required methods, mandatory training and detailed instructions all point toward employee.
- Financial control. Whether expenses are reimbursed, who supplies the tools, how payment is structured, and whether the worker has a real opportunity for profit or loss. A person with no unreimbursed costs and no chance of losing money on a job looks like an employee.
- Type of relationship. Written contracts, employee-type benefits like a pension or paid vacation, whether the relationship is expected to continue indefinitely, and whether the work performed is a key aspect of the business.
That last point catches a lot of arrangements. If you do the thing the company sells, all day, indefinitely, the label on your paperwork is doing a lot of work it can't support.
The wage-and-hour test is a different test, and it's been moving
Minimum wage and overtime rights come from the Fair Labor Standards Act, and courts there apply an "economic reality" analysis — broadly, whether the worker is economically dependent on the business or genuinely in business for themselves. It is a broader test than the IRS one, which means people can be contractors for tax purposes and employees for overtime purposes.
The Labor Department's own regulation interpreting that test has been rewritten more than once in recent years and was under revision again in 2026, with enforcement guidance shifting along the way. Practically: don't rely on a version of the rule you read about at some point. Check the current text before you build an argument on it, and understand that what a federal agency is enforcing this year and what a court will apply to a private lawsuit are not always the same thing.
And then there are the states, which are stricter
Several states use an ABC test, which starts from the presumption that you're an employee and puts the burden entirely on the company. California's version, codified by AB 5 into Labor Code sections 2775–2787, requires the hiring entity to establish all three of the following:
- "The worker is free from the control and direction of the hiring entity in connection with the performance of the work, both under the contract for the performance of the work and in fact."
- "The worker performs work that is outside the usual course of the hiring entity's business."
- "The worker is customarily engaged in an independently established trade, occupation, or business of the same nature as that involved in the work performed."
Prong B is the one that ends most arguments. A delivery company cannot easily argue that delivering is outside the usual course of its business. California's own guidance notes the framework "starts with an assumption that all workers are employees."
Other states use their own variants, some for unemployment insurance only, some across all wage laws, some with long lists of exempted occupations. Your state labor department publishes its test; that's the one that governs your wage claim.
What misclassification actually costs you
Start with the tax, since it's the easiest to quantify. Take $60,000 of pay.
- As a W-2 employee, your share of Social Security and Medicare is 7.65%: $60,000 × 0.0765 = $4,590. Your employer pays a matching $4,590 you never see.
- As a 1099 contractor, you owe self-employment tax on 92.35% of net earnings at 15.3%: $60,000 × 0.9235 × 0.153 = $8,477.73.
- You do get to deduct one half of that — $4,238.87 — in figuring adjusted gross income. In a 22% bracket that's worth about $933 back.
So the honest net difference is roughly $8,478 − $4,590 − $933 = about $2,955 out of your pocket, on the same $60,000, purely because of which box got checked. That's before you count the deductions a genuine business gets to take, which a misclassified worker with no real business expenses mostly can't.
The tax is not the expensive part. The expensive part is everything that doesn't attach to a contractor:
- No unemployment insurance when the work ends, because no employer paid into the system on your behalf.
- No workers' compensation if you're injured on the job.
- No overtime and no minimum wage protection under the FLSA.
- No FMLA job protection, no employer health contribution, no 401(k) match.
- No employer-side withholding, so a missed quarterly estimate becomes an underpayment penalty.
How to challenge it
There is a specific IRS form for exactly this, and hardly anyone uses it. Form SS-8, "Determination of Worker Status for Purposes of Federal Employment Taxes and Income Tax Withholding," can be filed by either the firm or the worker to get an official IRS determination. It asks detailed questions about how the work is directed, who supplies what, and how you're paid — the same three categories above.
Two things to know before you file. First, it is slow; the IRS indicates the process generally takes at least six months. Second, the IRS notifies the firm, so this is not a quiet move. That's not a reason to avoid it — it's a reason to file it with your eyes open, ideally after you've decided how you want the working relationship to end.
While the determination is pending, or if you simply believe you were an employee, Form 8919, "Uncollected Social Security and Medicare Tax on Wages," lets you "figure and report the employee's share of uncollected Social Security and Medicare taxes due on their compensation." In plain terms: you pay the 7.65% employee share rather than the full 15.3%, and the IRS pursues the employer for the rest. There are specific eligibility reasons you have to check on the form, one of which is having filed Form SS-8.
Separately, and often faster: file a wage claim with your state labor agency for unpaid overtime or minimum wage, and file for unemployment when the work ends even if you were paid on a 1099. The unemployment agency will make its own classification determination, and it costs you nothing to let them look.
For the employer's side of it, the tax code sets reduced rates under section 3509 when a business treated an employee as a contractor without a reasonable basis — which is the lever that gets companies to settle.
Three things not to do
- Don't assume the contract settles it. An agreement that says "Contractor is an independent contractor and not an employee" is evidence of intent and nothing more. Every test above looks at what actually happened.
- Don't take the 1099 rate as if it were the W-2 rate. If you're genuinely a contractor, price accordingly — our guide to setting freelance rates walks through the arithmetic on payroll tax, benefits and unbillable time.
- Don't sit on it for years. Wage claims have statutes of limitations, and every month you wait, the oldest weeks drop off the back. If you're already gone from the job, the decision is easier than it feels.
The five-minute self-check
Write down honest answers: Who sets your hours? Can you turn down work without consequence? Do you work for anyone else, and could you? Who supplies the tools and the software? Are your expenses reimbursed? Could you lose money on a bad month? Is the work you do the thing the company sells? How long has this arrangement run?
If most of those answers point one way and your tax form points the other, you have something worth a conversation — first with the company, in writing and calmly, and then with your state labor agency or an employment attorney. Many employment lawyers consult for free, and misclassification cases are one of the areas where they're most willing to. This page explains how the tests work; only a lawyer in your state can tell you how they apply to you.
Sources and further reading
The claims in this article were checked against the primary sources below. Programs, limits and costs change, so the official pages are always the final word.
- Independent contractor (self-employed) or employee?Internal Revenue ServiceThe three common law categories of evidence, Form SS-8, Form 8919, and section 3509 consequences of misclassification.
- About Form SS-8, Determination of Worker StatusInternal Revenue ServiceWho may file Form SS-8 and what determination it produces.
- Independent Contractor Versus Employee — Frequently Asked QuestionsCalifornia Department of Industrial RelationsThe three prongs of California's ABC test, the hiring entity's burden of proof, and the AB 5 codification at Labor Code 2775-2787.
- Topic no. 554, Self-employment taxInternal Revenue ServiceSelf-employment tax rate and the 92.35% factor used in the misclassification cost example.