To fill out IRS Form SS-8, gather identifying details for both the business and the worker, complete Parts I through IV with specific facts about how the work actually gets done day to day, add Part V if the worker provides services directly to customers or works as a salesperson, sign it, and mail the paper form to the IRS office in Holtsville, New York. The form asks the IRS to decide whether a worker is an employee or an independent contractor for federal tax purposes, and the quality of your answers is what determines whether you get a useful ruling or a vague one months later.
Who Can File and What Filing Means
Either the business or the worker can submit Form SS-8. The executor or administrator of a deceased worker’s estate can file too. You do not need permission from the other side, but filing is not anonymous: the IRS contacts the non-filing party shortly after it receives your submission and asks them to complete their own portion. If you are a worker, expect your employer or client to learn about the filing. The IRS uses facts from both sides to build a picture of the relationship, and it can still issue a determination if the other party ignores the request, though a one-sided record tends to produce a less reliable result.
Businesses that already suspect they have been misclassifying workers have a separate option to consider before filing SS-8: the Voluntary Classification Settlement Program, which allows prospective reclassification in exchange for reduced liability for past periods, subject to eligibility rules.1Internal Revenue Service. Voluntary Classification Settlement Program
What to Gather Before You Start
Have the following ready before you open the form:
- The firm’s legal name, address, Employer Identification Number (EIN), and a contact person. If a different entity actually paid the worker, get that payer’s name, address, and EIN too.
- The worker’s name, address, and Social Security Number.
- The date the relationship started and, if it ended, the date it ended.
- A plain description of what the firm does and how the worker’s role fits in.
The form’s real substance comes from facts about three areas the IRS evaluates under common-law rules: behavioral control (who directs what work is done and how), financial control (who bears expenses, invests in equipment, and faces profit or loss), and the type of relationship (contracts, benefits, permanency, and whether the work is core to the business).2Internal Revenue Service. Independent Contractor Self-Employed or Employee No single factor decides the outcome. A written contract calling someone a contractor does not settle the question if the day-to-day facts point the other way. Pull together anything that documents those facts: written agreements, emails showing instructions or directives, expense reimbursement records, proof of the worker’s own investment in tools or equipment, and documentation of any benefits provided. Publication 15-A explains the categories in more depth and the form’s questions map directly to them.3Internal Revenue Service. Publication 15-A 2026 Employers Supplemental Tax Guide
Specificity separates a useful filing from one that stalls. “Worker sets own hours” gives the IRS little to work with. A description of how scheduling actually happens, who initiates it, and what happens when the worker declines an assignment gives the IRS something to weigh.
Completing the Form Section by Section
Form SS-8 has five parts. The IRS cannot process your request unless Parts I through IV are complete, and Part V is required in specific situations.4Internal Revenue Service. Instructions for Form SS-8
Part I: Identifying Information
Part I collects names, addresses, and tax identification numbers for the firm and the worker. It also asks why you are requesting the determination, how many workers hold similar positions, and whether there is any related litigation. If you are a worker who believes you have been misclassified, say so plainly. Leaving the reason blank forces the IRS to guess at your motivation.
Part II: The Firm’s Business
Part II asks for a narrative describing what the firm does and where the worker fits. Keep it concrete. A rideshare filing would describe the company as operating a technology platform that connects drivers to passengers, rather than simply “transportation services.”
Part III: Behavioral and Financial Control
This is the longest section and the one the IRS relies on most. Questions cover who sets the schedule, who provides tools and supplies, whether the worker can hire assistants, whether the worker has unreimbursed business expenses, and similar operational details. Answer based on what happens in practice, not what a contract says should happen. If the contract gives the worker scheduling control but the firm sends mandatory shift assignments, describe the shift assignments.
Part IV: Type of Relationship
Part IV asks about written agreements, employee-type benefits, termination rights, and whether the worker offers similar services to the general public. The filing party signs and dates the form at the end of this section.5Internal Revenue Service. Completing Form SS-8
Part V: Service Providers and Salespersons
Complete Part V only if the worker provides services directly to customers (such as delivery, cleaning, or therapy) or works as a salesperson. It asks how customers are obtained, who sets prices, and the degree of control the firm has over the worker’s dealings with the public.4Internal Revenue Service. Instructions for Form SS-8
Where to Send It
The IRS does not accept Form SS-8 electronically. Mail the signed, completed form to:
Department of the Treasury
Internal Revenue Service
Form SS-8 Determinations
P.O. Box 630, Stop 631
Holtsville, NY 11742-06304Internal Revenue Service. Instructions for Form SS-8
The IRS acknowledges receipt, contacts the other party for their input, and assigns a technician to review the facts. Requests are worked in the order received, and expedited handling is rare. Plan on several months at minimum. You will eventually receive a determination letter classifying the worker as an employee or an independent contractor. That determination binds the IRS as long as the underlying facts of the relationship stay the same.
What the Determination Triggers
If You Are a Worker Ruled an Employee
Use Form 8919 to report and pay your share of uncollected Social Security and Medicare taxes on the affected compensation. The form uses specific reason codes tied to SS-8: Reason Code A if you have a determination letter confirming employee status, or Reason Code G if you filed SS-8 but have not yet received a reply.6Internal Revenue Service. About Form 8919 Uncollected Social Security and Medicare Tax on Wages Filing Form 8919 means you pay only the employee share, not the full self-employment tax you would otherwise owe on Schedule SE, which roughly cuts the payroll tax burden on those wages in half.
If You Are a Business Found to Have Misclassified
You owe employment taxes you never withheld. Section 3509 of the Internal Revenue Code reduces that liability to 1.5 percent of wages for income tax withholding and 20 percent of the employee’s normal Social Security and Medicare share, as long as you filed the required 1099 forms for the worker. If you did not file the 1099s and cannot show reasonable cause, the rates double to 3 percent and 40 percent.7Office of the Law Revision Counsel. 26 USC 3509 – Determination of Employers Liability for Certain Employment Taxes Going forward, you must withhold income tax and pay your share of Social Security, Medicare, and federal unemployment taxes for the covered workers, and you should look at whether others in similar roles need to be reclassified.
Section 530 Relief From Back Taxes
Section 530 of the Revenue Act of 1978 can shield a business from back employment taxes even after a reclassification. Relief is not automatic. You must meet three requirements:8Internal Revenue Service. Worker Reclassification – Section 530 Relief
- Reporting consistency. You timely filed all required 1099s for the workers. If no information return was required, relief will not be denied on that basis alone.
- Substantive consistency. Neither you nor a predecessor treated the worker, or anyone in a substantially similar role, as an employee at any time after December 31, 1977. The IRS looks at actual job functions, not titles.
- Reasonable basis. You relied at the time on a prior IRS audit that did not reclassify the workers, on judicial precedent or published rulings supporting your position, or on a longstanding industry practice of treating similar workers as contractors. Another reasonable basis can qualify, and the IRS is directed to construe this liberally in the taxpayer’s favor.
“At the time” is the operative phrase. You cannot construct a justification after the fact.
Appeals and the Refund Deadline
If you disagree with the determination, the letter itself will say whether you have appeal rights and set the deadline for a written protest. That deadline is generally 30 days from the date of the letter.9Internal Revenue Service.