Independent contractor or employee: how the IRS tells them apart

Whether someone is a contractor or an employee is not decided by the contract's label or by what both sides prefer. It depends on how the work is actually controlled. Getting it wrong can mean back payroll taxes, penalties and state claims. This guide explains how the line is drawn.

By Hamza Fida, Chartered Accountant. Reviewed by Awais Jameel, Chartered Accountant. Checked against official sources on . 4 minute read.

Short answer

A worker is an employee if the business has the right to control what they do and how they do it, and an independent contractor if the business only controls the result. The IRS weighs three kinds of evidence: behavioral control, financial control and the relationship between the parties. Some states apply a stricter ABC test.

At a glance

Core question
Does the business control how the work is done, or only the result?
IRS evidence
Behavioral control, financial control, relationship of the parties
Contractor paperwork
Form W-9, then Form 1099-NEC if paid $2,000 or more in 2026
Employee paperwork
Form W-4, payroll withholding, Form W-2
Stricter state tests
Some states, including California, use an ABC test
Official ruling
Form SS-8, where the IRS decides for a specific worker
Independent contractor or employee: how the IRS tells them apartCore question: Does the business control how the work is done, or only the result?; IRS evidence: Behavioral control, financial control, relationship of the parties; Contractor paperwork: Form W-9, then Form 1099-NEC if paid $2,000 or more in 2026; Employee paperwork: Form W-4, payroll withholding, Form W-2; Stricter state tests: Some states, including California, use an ABC test; Official ruling: Form SS-8, where the IRS decides for a specific worker.KEY FACTS AT A GLANCEIndependent contractor or employee: how the IRStells them apartCore questionDoes the business controlhow the work is done, oronly the result?IRS evidenceBehavioral control,financial control,relationship of the partiesContractor paperworkForm W-9, then Form1099-NEC if paid $2,000or more in 2026Employee paperworkForm W-4, payrollwithholding, Form W-2Stricter state testsSome states, includingCalifornia, use an ABCtestOfficial rulingForm SS-8, where the IRSdecides for a specificworkerChecked against official sourcesTax BakersIndependent contractor or employee: how the IRS tells them apartCore question: Does the business control how the work is done, or only the result?; IRS evidence: Behavioral control, financial control, relationship of the parties; Contractor paperwork: Form W-9, then Form 1099-NEC if paid $2,000 or more in 2026; Employee paperwork: Form W-4, payroll withholding, Form W-2; Stricter state tests: Some states, including California, use an ABC test; Official ruling: Form SS-8, where the IRS decides for a specific worker.KEY FACTS AT A GLANCEIndependent contractor oremployee: how the IRS tells themapartCore questionDoes the business control how the work isdone, or only the result?IRS evidenceBehavioral control, financial control,relationship of the partiesContractor paperworkForm W-9, then Form 1099-NEC if paid $2,000or more in 2026Employee paperworkForm W-4, payroll withholding, Form W-2Stricter state testsSome states, including California, use anABC testOfficial rulingForm SS-8, where the IRS decides for aspecific workerChecked against official sourcesTax Bakers
Key facts at a glance, as set out in this guide.

Why does the difference matter?

For an employee, the business withholds income tax, withholds and pays Social Security and Medicare, pays federal and state unemployment tax, and usually provides workers' compensation coverage. For an independent contractor, it does none of that: it pays the invoice and, for US contractors paid enough in the year, files a Form 1099-NEC. The contractor pays their own self-employment tax. Treating an employee as a contractor shifts those costs away from the business, which is why the IRS and states look closely at it. For what the difference means for the worker's own taxes, see 1099 vs W-2.

How does the IRS decide?

The IRS applies the common-law rules. The central question is whether the business has the right to direct and control the worker, not only in what is to be done but in how it is done. It groups the evidence into three categories.

CategoryPoints to employeePoints to contractor
Behavioral controlYou set hours, methods and sequence of work, give detailed instructions, and train the worker in your ways of workingThe worker decides how, when and where to do the work and needs no training from you
Financial controlYou provide tools and equipment, reimburse expenses, and pay by the hour or week; the worker cannot make a profit or lossThe worker invests in their own equipment, has unreimbursed costs, offers services to others, and can make a profit or loss
RelationshipBenefits such as insurance or paid leave, an open-ended arrangement, and work that is a key part of your regular businessA defined project, a written contract setting out an independent relationship, and no benefits

No single factor decides it. The IRS looks at the relationship as a whole. A written contract calling someone a contractor helps only if the working reality matches it.

Do states use the same test?

Not always. States apply their own tests for unemployment insurance, workers' compensation and wage laws, and some are stricter than the IRS. Several use an ABC test, under which a worker is an employee unless the business shows that the worker is free from its control, does work outside the usual course of its business, and is customarily engaged in an independent trade of that kind. California is the best-known example. A worker can be a contractor for federal tax and an employee under state law.

What paperwork goes with each?

Independent contractor

  • Collect a Form W-9 before the first payment.
  • Keep the contract and invoices.
  • File Form 1099-NEC for each US contractor paid $2,000 or more during 2026, up from $600 in earlier years. It is due to the contractor and the IRS by January 31, or the next business day.

Employee

  • Collect Form W-4 and complete Form I-9 to verify eligibility to work.
  • Withhold and deposit payroll taxes, and file quarterly Form 941 and annual Form 940.
  • Issue Form W-2 by January 31, or the next business day.
  • Register for state payroll taxes and unemployment insurance.

Construction businesses should also see bookkeeping for contractors.

What happens if you get it wrong?

If the IRS reclassifies a contractor as an employee, the business can owe the employment taxes it should have withheld and paid, plus penalties and interest. Reduced rates can apply where the error was not intentional. States can separately assess unemployment contributions and wage claims.

Two routes reduce the exposure:

  • Relief under section 530 can protect a business that had a reasonable basis for treating workers as contractors, treated similar workers consistently, and filed the required 1099s.
  • The Voluntary Classification Settlement Program lets a business that reclassifies workers as employees going forward pay a reduced amount for past years, if it meets the program's conditions.

The penalties and settlement options are in worker misclassification penalties.

What if you are genuinely unsure?

You can ask the IRS to decide on Form SS-8, describing the working relationship. The IRS then issues a determination for that worker. It takes months, so it is more useful for an ongoing arrangement than for a short project. In the meantime, look at how the work is actually done and classify on that basis.

What about contractors outside the US?

A foreign individual working entirely outside the US for a US business is generally not subject to US payroll taxes, and a Form 1099-NEC is not used for them. Collect a Form W-8BEN instead of a W-9 to document their foreign status. See paying foreign contractors from a US company.

Unsure how to classify someone?

We review the working arrangement against the IRS factors and your state's test, and set up payroll or contractor reporting to match.

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Questions people ask

What is the main test for contractor or employee?

Whether the business has the right to control how the work is done. If it controls only the result, the worker is more likely a contractor.

Does a contract that says 'independent contractor' settle it?

No. It is one factor. The IRS and states look at how the work is actually controlled and paid.

What is the 1099-NEC threshold for contractors in 2026?

$2,000 paid to a contractor during 2026, up from $600 for earlier years.

What is an ABC test?

A stricter state test that treats a worker as an employee unless the business proves they are free from its control, work outside its usual business, and run an independent trade of that kind.

Sources

Every fee, date and rule on this page was taken from these official and primary sources.

  1. IRS: Independent contractor (self-employed) or employee?
  2. IRS Publication 15-A: Employer's Supplemental Tax Guide
  3. IRS: Form SS-8, Determination of Worker Status
  4. IRS: Instructions for Forms 1099-MISC and 1099-NEC
  5. Internal Revenue Code section 3509: rates for employer liability on misclassified workers

Rules and fees change. If you are reading this long after September 30, 2026, confirm the figures with the source before you rely on them.

Freelancers and self-employedSelf-employment tax explainedDeadlines, penalties and IRS noticesUS business tax deadlines: the full calendarBusiness tax by entity typeBusiness expenses you can deduct: a working list

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This guide is general information. It is not tax or legal advice for your situation.