If your business pays an independent contractor $600 or more in a calendar year, here is how 1099 works for employers in practice: you collect a Form W-9 before the first payment, pay the contractor the full contracted amount without withholding taxes, and file Form 1099-NEC with the IRS and send a copy to the contractor by January 31 of the following year. You do not run the contractor through payroll, and you do not pay the employer share of Social Security or Medicare tax on those payments. The contractor handles their own tax obligations.
That is the whole workflow at a high level. The details below cover each step, plus the classification question you have to answer first and the penalties that apply if you get any of it wrong.
Confirm the Worker Is Actually a Contractor
Issuing a 1099 does not make someone a contractor. Before you set anyone up outside payroll, work through the IRS common-law test, which weighs three categories: behavioral control, financial control, and the type of relationship.1Internal Revenue Service. Independent Contractor (Self-Employed) or Employee?
Behavioral control asks whether you direct how, when, and where the work gets done. A contractor sets their own methods and schedule; an employee follows your instructions and training. Financial control asks who bears the economic risk. Contractors typically supply their own tools, cover their own expenses, and can profit or lose money on a job. Type of relationship looks at written contracts, benefits, and permanence: a defined project points toward contractor status, an open-ended role doing core company work points toward employment.
No single factor decides it. If the classification is genuinely close, the safer answer is usually employee, because the cost of guessing wrong lands entirely on the business, not on the worker.
Collect a W-9 Before the First Payment
Form W-9 gives you the information you need to file the 1099 later: the contractor’s legal name, business name if different, mailing address, and taxpayer identification number, which may be a Social Security Number, an Employer Identification Number, or an Individual Taxpayer Identification Number.2Internal Revenue Service. Form W-9 (Rev. March 2024) The contractor also certifies that the TIN is correct and indicates whether they are subject to backup withholding.3Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification
Make the W-9 a condition of processing the first invoice. Chasing missing forms in January is how businesses miss filing deadlines. Keep completed W-9s on file for at least four years after the last tax return that references the contractor.
A written service agreement is not required by the IRS, but it helps if the classification is ever questioned. It should identify the worker as an independent contractor, state that the contractor is responsible for their own taxes and insurance, define the scope of work, and set payment terms. Avoid contract language that dictates schedules, requires on-site attendance, or blocks the contractor from taking other clients. Each of those cuts against the classification you are trying to protect.
Pay the Full Amount Without Withholding
Independent contractors are not on your payroll. You do not withhold federal income tax, Social Security tax, or Medicare tax from what you pay them, and you do not pay the employer share of payroll taxes on the amounts. You pay the gross amount agreed in the contract. The contractor is responsible for self-employment tax, which is 15.3 percent of net earnings — 12.4 percent for Social Security and 2.9 percent for Medicare.4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
Reimbursements for materials, travel, or other business expenses generally count as part of total compensation and get reported on the 1099-NEC along with the fees. Contractors do not have the accountable plan mechanism that lets employees exclude reimbursements from income.5Internal Revenue Service. Reporting Payments to Independent Contractors The contractor deducts those expenses on their own return.
The Backup Withholding Exception
There is one situation where you do withhold. Backup withholding requires you to hold back a flat 24 percent of payments when a contractor fails to give you a valid TIN, when the IRS sends you a “B” notice saying the TIN the contractor provided is wrong, or when the contractor does not certify they are exempt from backup withholding.6Internal Revenue Service. Backup Withholding After a first B notice, send the contractor a copy of the notice along with a blank W-9 and start withholding if they do not respond with a corrected TIN.7Internal Revenue Service. Backup Withholding “B” Program You remit the withheld amounts to the IRS, and the contractor claims credit for them on their return.
File Form 1099-NEC by January 31
If total payments to a contractor for services reach $600 or more during the calendar year, file Form 1099-NEC (Nonemployee Compensation) reporting the aggregate amount.5Internal Revenue Service. Reporting Payments to Independent Contractors Both the IRS copy and the contractor’s copy are due by January 31 of the following year, whether you file on paper or electronically.8Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025) When January 31 falls on a weekend, the deadline shifts to the next business day; for tax year 2025 forms, the due date is February 2, 2026.
Payments to corporations generally do not require a 1099-NEC. Payments to individuals, partnerships, and estates do. You also have to file a 1099-NEC for any contractor from whom you withheld federal income tax under backup withholding, regardless of amount.9Internal Revenue Service. Am I Required to File a Form 1099 or Other Information Return?
If your business files 10 or more information returns of any type in a year — counting W-2s filed with the Social Security Administration and every 1099 variant together — you must file electronically.10Internal Revenue Service. File Form 1099 Series Information Returns for Free Online The IRS runs a free e-filing portal called the Information Returns Intake System (IRIS) that is open to businesses of any size.11Internal Revenue Service. E-File Information Returns With IRIS Even below the 10-return threshold, electronic filing gives you immediate confirmation and cuts down on processing errors.
Penalties for Filing Late
Late-filing penalties are assessed per form and climb the longer you wait. For returns due in 2026, the amounts are $60 per form up to 30 days late, $130 per form from 31 days late through August 1, and $340 per form after August 1 or if you never file. Intentional disregard raises the penalty to $680 per form. The amounts apply separately to the IRS copy and to each contractor statement you fail to furnish on time.12Internal Revenue Service. Information Return Penalties Small businesses, defined as those with average annual gross receipts of $5 million or less over the three most recent tax years, face lower aggregate maximums, but the per-form amounts are the same.
Fixing a Mistake After Filing
If you catch an error after the return is in, file a correction as soon as possible to limit the penalty exposure. For a wrong dollar amount, prepare a new 1099-NEC with the CORRECTED box checked, put the right figures on it, and submit it with a new Form 1096 transmittal.13Internal Revenue Service. General Instructions for Certain Information Returns For a wrong name or TIN, the fix takes two steps: file a corrected form that zeros out the incorrect return, then file a brand-new original with the correct information. If your originals had to be filed electronically, the corrections do too.
State Filing
Many states require their own copy of the 1099-NEC, with their own thresholds and deadlines. Some states participate in the IRS Combined Federal/State Filing Program, which forwards your electronically filed 1099-NEC data to the state at no extra cost when you use the proper state code.14Internal Revenue Service. Topic No. 804, FIRE System Test Files and Combined Federal/State Filing (CF/SF) Program Others need a separate direct filing. A few states also require reporting of payments below the $600 federal threshold when state income tax was withheld. Check your state’s department of revenue to confirm which of those applies to you.
Foreign Contractors Follow Different Rules
If the contractor is not a U.S. citizen or resident alien, the 1099 workflow does not apply. Instead of a W-9, you collect Form W-8BEN to establish foreign status, or Form W-8ECI if the income is connected to a U.S. trade or business.15Internal Revenue Service. Instructions for Form W-8BEN The default withholding rate on payments to foreign contractors is 30 percent of the gross payment, though an income tax treaty may reduce or eliminate it if the contractor claims the benefit on the W-8BEN. You report these payments on Form 1042-S rather than Form 1099-NEC and file an annual Form 1042 to reconcile amounts withheld.
What Misclassification Costs
Getting classification wrong is where 1099 arrangements turn expensive, so the first step of this whole process — deciding whether the worker really is a contractor — is also the most important one.
When the IRS reclassifies a worker as an employee, it computes the employer’s back tax liability using reduced rates under Section 3509 of the Internal Revenue Code, and the rates depend on whether you filed 1099s. If you did file 1099s for the worker, you owe 1.5 percent of wages for income tax withholding plus 20 percent of the employee’s share of Social Security and Medicare taxes. If you did not file 1099s, those figures double to 3 percent and 40 percent.16Office of the Law Revision Counsel. 26 USC 3509 – Determination of Employers Liability for Certain Employment Taxes The reduced rates apply only when the misclassification was unintentional. On top of that, you may owe the employer’s full share of Social Security and Medicare for the reclassified period, plus interest.
Wage and hour exposure runs in parallel. Under the Fair Labor Standards Act, a reclassified worker can recover back wages for unpaid overtime, liquidated damages equal to those back wages, and attorney’s fees.17U.S. Department of Labor. Small Entity Compliance Guide Many states apply their own classification tests, often stricter than the federal one, with their own penalties layered on top.
Filing the 1099 does not immunize you from a reclassification claim, but it does cut the federal tax exposure roughly in half if one comes. That alone is reason enough to treat the January 31 deadline as non-negotiable.