Running 1099 payroll for independent contractors is not really payroll in the W-2 sense: you pay the full invoice amount with no federal tax, Social Security, or Medicare withheld, then report the year’s total to the IRS on Form 1099-NEC once you have paid a contractor $600 or more in the calendar year.1Internal Revenue Service. Independent Contractor (Self-Employed) or Employee? The work sits in four places: confirming the person is genuinely a contractor, collecting a W-9 before you pay, tracking every payment through the year, and filing the 1099-NEC by January 31.
Confirm the Worker Is Actually a Contractor
Before you set anyone up as a 1099 payee, be confident the classification holds. The IRS weighs three categories of evidence: behavioral control (who decides how the work gets done), financial control (whether the worker invests in their own tools and can profit or lose on the job), and the relationship of the parties (written contract, benefits, whether the engagement is project-based or open-ended).2Internal Revenue Service. Worker Classification 101: Employee or Independent Contractor No single factor decides it, and if you genuinely cannot tell, either party can file Form SS-8 to request a formal IRS determination, though a response can take six months or more.3Internal Revenue Service. Completing Form SS-8
Many states apply a stricter ABC test that presumes employment unless the business can prove the worker is free from control, doing work outside the company’s usual business, and running an independently established trade. A worker can be a contractor federally and an employee under state law, so check your state labor agency’s rule alongside the IRS factors.
Collect a W-9 Before the First Payment
Every domestic contractor should complete Form W-9 before any money moves. The form gives you their legal name, entity type, and Taxpayer Identification Number, which is a Social Security Number for individuals and single-member LLCs or an Employer Identification Number for larger entities. The contractor’s signature also certifies they are not subject to backup withholding.4Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification
If a contractor refuses to hand over a completed W-9, or gives you a TIN that fails to match IRS records, you are required to withhold 24% of every payment as backup withholding and remit it to the IRS.5Internal Revenue Service. Instructions for the Requester of Form W-9 (03/2024) That is a mess for both sides, so treat the W-9 as a hard prerequisite to work starting.
One boundary worth flagging: this process is for U.S. contractors. A nonresident alien performing services from outside the United States gives you Form W-8BEN instead of a W-9, the default withholding rate is 30% (potentially reduced by tax treaty), and the year-end form is 1042-S, not 1099-NEC.6Internal Revenue Service. About Form W-8 BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)7Office of the Law Revision Counsel. 26 U.S. Code 1441 – Withholding of Tax on Nonresident Aliens
Pay the Invoice in Full, No Withholding
Unlike employee payroll, you do not deduct federal income tax, Social Security, or Medicare from a contractor’s payment. They receive the gross amount on their invoice.1Internal Revenue Service. Independent Contractor (Self-Employed) or Employee? Most businesses pay by ACH direct deposit; paper checks and wire transfers work too, with wires typical for international contractors or high-value engagements.
Every payment should tie to a specific invoice describing the work and the amount due. That is the audit trail you will need at year-end and in the event of an IRS review. For milestone or retainer arrangements, log each disbursement in enough detail that someone reading the books three years later can tell what the money bought.
The main exception to paying the full amount is backup withholding. If the contractor’s TIN is missing or wrong, you withhold 24%. The IRS may also send a CP2100 or CP2100A notice after you file a 1099 if the name-and-TIN pairing does not match their records, at which point you send the contractor a formal “B notice” and begin withholding if the mismatch is not corrected.8Internal Revenue Service. Backup Withholding “B” Program
Track Every Payment Through the Year
You will owe a 1099-NEC to any contractor you pay $600 or more during the calendar year.9Internal Revenue Service. Am I Required to File a Form 1099 or Other Information Return? Your accounting system needs a running per-contractor total, not a year-end scramble. For each transaction, capture the date, amount, payment method, and a short description of the services. Keep the records at least four years after filing; that is the window the IRS can audit information returns.10Internal Revenue Service. Employment Tax Recordkeeping
Expense reimbursements are a common tripwire. Money you send a contractor for travel or materials counts as taxable income on the 1099-NEC unless the arrangement qualifies as an accountable plan, which requires a clear business connection, substantiation with receipts within 60 days, and return of any excess advance.11Internal Revenue Service. Revenue Ruling 2003-106: Accountable Plan Requirements for Expense Reimbursements In practice, most small businesses just roll reimbursements into the 1099-NEC total and let the contractor deduct them on their own return. Either approach is fine; pick one and apply it consistently.
File Form 1099-NEC by January 31
Both the contractor’s copy and the IRS filing are due January 31 of the year after payment. There is no automatic extension, so reconcile your records well before year-end.12Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025) – Specific Instructions for Form 1099-NEC
Electronic or Paper
If your business files 10 or more information returns combined across all types during the year, you must file electronically. The threshold is aggregate: four 1099-NECs plus six 1099-MISCs hits 10 and triggers the mandate.13Internal Revenue Service. Publication 1099 General Instructions for Certain Information Returns – For Use in Preparing 2026 Returns For tax year 2026 returns filed in early 2027, the IRS has designated the Information Returns Intake System (IRIS) as the sole electronic filing portal, replacing the older FIRE system.14Internal Revenue Service. Filing Information Returns Electronically (FIRE)
Under 10 returns, you can paper file, but you must include Form 1096 as a transmittal cover sheet, and the forms must be the official IRS-issued scannable versions rather than PDF printouts.15Internal Revenue Service. Form 1096 Annual Summary and Transmittal of U.S. Information Returns
Verify TINs Before Filing
The IRS runs a free TIN Matching service that validates a contractor’s name-and-TIN combination before you file. Running it in advance heads off the CP2100 mismatch notices and the backup withholding obligation that follows. You can check TINs individually through an interactive lookup or in bulk, provided your business is on the IRS Payer Account File database.16Internal Revenue Service. Taxpayer Identification Number (TIN) Matching
Do Not Report Card and App Payments
If you paid a contractor through a credit card, debit card, or third-party payment network like PayPal or Venmo for Business, leave that payment off the 1099-NEC. The payment processor reports it on Form 1099-K, and reporting the same money on both forms doubles the contractor’s income on the IRS side.17Internal Revenue Service. Form 1099-K FAQs: Third Party Filers of Form 1099-K Only direct payments by check, ACH, wire, or cash go on your 1099-NEC.
Penalties for Missing or Late Filings
The 1099-NEC penalties for 2026 returns scale with how late you are, and they apply per form:
- Up to 30 days late: $60 per form
- 31 days late through August 1: $130 per form
- After August 1 or not filed: $340 per form
- Intentional disregard: $680 per form
The same schedule applies separately to the contractor copies you are required to deliver, so a business with 20 contractors that blows the deadline entirely is looking at $6,800 or more.18Internal Revenue Service. Information Return Penalties If you catch an error after filing, submit a corrected 1099-NEC quickly; that limits the escalation.
State Reporting for New Contractors
Federal filing is only part of the picture. Many states require businesses to report newly engaged independent contractors to the state’s new-hire reporting agency, often within 20 days of the engagement’s start. Reporting thresholds vary, with some states triggering at $600 and others at $2,500. The rules exist mostly for child support enforcement and unemployment insurance administration. Check your state’s new-hire reporting agency for the deadline and dollar threshold that apply to contractors.
What Misclassification Costs
Getting the contractor-versus-employee call wrong is the single most expensive mistake in this whole process, which is why the classification step comes first. If the IRS reclassifies the worker as an employee, you owe the unpaid employer share of Social Security and Medicare taxes, plus penalties and interest, going back as far as the misclassification existed, and potentially the income tax you should have withheld.1Internal Revenue Service. Independent Contractor (Self-Employed) or Employee?
The Department of Labor adds a second layer. A misclassified worker may be owed back pay for minimum wage or overtime violations under the Fair Labor Standards Act, plus an equal amount in liquidated damages, and can either be represented by the DOL or sue directly for wages, damages, and attorney’s fees.19U.S. Department of Labor. Handy Reference Guide to the Fair Labor Standards Act – Enforcement Through Legal Remedies State agencies pile on their own penalties for unpaid unemployment insurance, workers’ compensation premiums, and wage-law violations. Compared to those numbers, the cost of getting the classification right at the outset is trivial.