How to Hire a Contractor for Your Small Business
How to hire an independent contractor for your small business. Classification tests, W-9, ICA, misclassification risks, and onboarding workflow.
How to Hire a Contractor
The complete guide for small businesses hiring independent contractors, with classification tests, required forms, and onboarding workflow
This guide covers how to hire an independent contractor (1099 worker) for your small business. If you are looking for a guide on hiring a construction or home improvement contractor, this is not the right resource.
The first contractor I hired was a freelance designer for a brand refresh project. I found her on a referral, agreed on a rate over email, sent payment via Venmo, and never collected a W-9 or signed an agreement. When tax season arrived and I needed to file a 1099-NEC, I realized I did not have her taxpayer ID. I also realized that if the IRS had audited our working arrangement, the lack of documentation would have made it very difficult to prove she was actually a contractor and not an employee I was paying off the books.
That experience taught me that hiring a contractor correctly is not complicated, but skipping the steps creates expensive problems. This guide covers the full process: how to determine if a worker qualifies as a contractor, the classification tests the IRS and DOL use, the forms you need, how to structure the agreement, what triggers audits, and how to onboard contractors properly. It is written for US small businesses with 5 to 50 employees and no dedicated HR or legal team.
When to Hire a Contractor vs an Employee
The decision between contractor and employee is not about cost or preference. It is a legal classification based on the nature of the working relationship. The IRS and the Department of Labor both have tests to determine classification, and they do not always agree. When in doubt, the safest path is to classify the worker as an employee. The penalties for misclassifying an employee as a contractor are severe. There is no penalty for classifying a contractor as an employee.
| Factor | Independent Contractor | W-2 Employee |
|---|---|---|
| Control over how work is done | Worker controls methods, tools, and approach | Employer directs how, when, and where work is done |
| Schedule | Contractor sets own hours | Employer sets work schedule |
| Equipment and tools | Contractor provides their own | Employer provides equipment |
| Payment | Per project, per milestone, or per deliverable | Regular payroll (hourly, salary, commission) |
| Duration | Project-based with defined end date | Ongoing, indefinite employment relationship |
| Training | Not provided (contractor already has skills) | Employer provides training on methods |
| Exclusivity | Can work for multiple clients simultaneously | Typically works exclusively for employer |
| Benefits | None from the hiring company | Health insurance, PTO, retirement, etc. |
| Tax forms | W-9 (from contractor), 1099-NEC (from employer at year end) | I-9, W-4 (from employee), W-2 (from employer at year end) |
| Tax withholding | Contractor handles own taxes | Employer withholds income tax, FICA, state taxes |
The critical principle: classification is determined by the actual working relationship, not by what you write in the contract. You cannot convert an employee into a contractor simply by calling them one, changing their payment method, or having them sign an agreement that says "independent contractor." If the working relationship has the characteristics of employment (you control the how, not just the what), the worker is an employee regardless of the label. The employee vs contractor guide covers this distinction in depth with the IRS economic substance doctrine.
The Three Classification Tests You Need to Know
Three different classification frameworks apply to independent contractors in the United States. The federal IRS test and DOL test use different criteria and can reach different conclusions about the same worker. State-level tests (particularly the ABC test used in California, Massachusetts, New Jersey, Illinois, and a growing number of other states) are often stricter than the federal tests. You need to satisfy all applicable tests, not just one.
The practical implication for small businesses: if your state uses the ABC test, it is the test that matters most because it is the strictest. Under the ABC test, the worker is assumed to be an employee unless you can prove all three prongs. Prong B is the most difficult for small businesses: the work must be "outside the usual course of the hiring entity's business." A marketing agency hiring a freelance copywriter may struggle with Prong B because copywriting is within the agency's usual business. The same agency hiring a freelance plumber to fix the office bathroom clearly passes Prong B.
If you are unsure about classification, the IRS offers Form SS-8 (Determination of Worker Status) to request a formal ruling. The human resource laws guide covers the broader legal framework that applies to all employment relationships. For state-specific requirements, the compliance hub provides state-by-state guides.
The Real Cost of Misclassification
Misclassifying an employee as an independent contractor is one of the most expensive compliance mistakes a small business can make. The penalties come from multiple agencies simultaneously: the IRS for unpaid employment taxes, the DOL for FLSA violations, the state for unemployment insurance and workers compensation, and potentially the worker themselves in a private lawsuit.
The IRS does offer a voluntary classification settlement program (VCSP) that allows businesses to reclassify workers prospectively with reduced penalties. If you discover you have misclassified workers, correcting the issue voluntarily is significantly cheaper than waiting for an audit. The compliance onboarding guide covers the broader compliance framework that applies when you bring any worker (employee or contractor) into your business.
How to Hire an Independent Contractor: 7 Steps
The process of hiring a contractor is simpler than hiring an employee in some ways (no I-9, no tax withholding, no benefits enrollment) and more legally nuanced in others (classification risk, agreement structure, payment compliance). These 7 steps cover the complete process from initial decision through first payment.
Step 1 is the most important and the most commonly skipped. Small businesses often start at Step 3 (collecting paperwork) without confirming that the worker actually qualifies as a contractor. If the classification is wrong, all the paperwork in the world does not protect you. The contractor onboarding guide covers the post-hire process in detail: how to onboard the contractor into your systems, training boundaries, and the 30-day checklist.
Required Forms and Deadlines
The forms required for hiring a contractor are simpler than employee paperwork (no I-9, no W-4, no state withholding), but the deadlines are strict and the penalties for missing them are real.
| Form | What It Is | When to Collect/File | Penalty for Missing |
|---|---|---|---|
| W-9 | Contractor provides their TIN and tax classification | Before the first payment | Cannot file accurate 1099-NEC; backup withholding (24%) may apply |
| 1099-NEC | Reports payments of $600+ to the IRS | File by January 31 (to IRS and contractor) | $60-$310 per form depending on how late; $630 per form if intentional |
| ICA | Independent Contractor Agreement defining the relationship | Before work begins | No legal penalty, but no documentation to defend classification |
| W-8BEN | Foreign contractor provides their tax status | Before first payment to non-US contractor | 30% withholding required without this form |
| State forms | Some states require contractor reporting (varies) | Varies by state | Varies; check your state compliance hub |
The most common mistake: paying a contractor before collecting the W-9. Once money has been sent, leverage to collect the form drops significantly. Make W-9 collection a hard prerequisite for the first payment. The IRS forms guide lists all tax obligations for businesses that use independent contractors.
The $600 Reporting Threshold
If you pay an independent contractor $600 or more in a calendar year, you must file a 1099-NEC with the IRS and provide a copy to the contractor by January 31 of the following year. The $600 threshold is cumulative across all payments to that contractor during the year. Track payments to each contractor throughout the year so you are not scrambling to calculate totals in January.
Payments below $600 do not require a 1099-NEC, but the contractor is still required to report the income. Payments made via credit card, debit card, or third-party payment networks (PayPal, Venmo business, Stripe) are reported by the payment processor on 1099-K, not by you on 1099-NEC. Direct payments (check, ACH, wire, cash) are your reporting responsibility.
Contractor Onboarding vs Employee Onboarding
Contractor onboarding and employee onboarding share some structural elements (access provisioning, document collection, project context) but differ in critical ways. The differences are not just procedural. They are legal boundaries that protect your classification.
| Element | Employee Onboarding | Contractor Onboarding |
|---|---|---|
| Tax forms | I-9, W-4, state withholding forms | W-9 only |
| Legal agreement | Offer letter (at-will employment) | Independent Contractor Agreement + SOW |
| Benefits enrollment | Health, dental, 401k, PTO | None (contractor is self-employed) |
| Training | Role training, company culture, tools, processes | Project-specific information only (not how to do the work) |
| Equipment | Company provides laptop, phone, etc. | Contractor uses own equipment |
| System access | Full employee accounts (email, Slack, all tools) | Limited project-specific access with contractor-labeled accounts |
| Check-ins | Day 7, 30, 60, 90 reviews | Project milestone reviews only |
| Duration | Indefinite (at-will) | Defined project end date |
| Offboarding | Knowledge transfer, exit interview, COBRA | Revoke access, final invoice, 1099-NEC at year end |
The legal boundaries matter. If your contractor "onboarding" includes mandatory company culture training, required attendance at all-hands meetings, and a 90-day performance review, you have onboarded an employee, regardless of the contract language. Keep contractor onboarding focused on project scope, system access, and deliverable expectations. Nothing more. The employee onboarding checklist shows the full employee process for comparison.
For employee onboarding, the process includes compliance paperwork (I-9, W-4, state forms), 30-60-90 day plans, training assignments, buddy programs, and regular check-ins through the first 90 days. Contractor onboarding is deliberately lighter because a heavy onboarding process creates evidence of an employment relationship.
6 Mistakes That Trigger IRS Audits
The IRS and state agencies audit worker classification more frequently than most small business owners realize. These are the 6 behavioral patterns that most commonly trigger scrutiny, either through a directed audit or when a misclassified worker files for unemployment or workers compensation and the agency investigates.
The pattern across all six mistakes: they blur the line between contractor and employee by adding elements of control that characterize employment. Each one individually raises questions. Two or three together create a strong case for misclassification. All six together make the case nearly impossible to defend.
The practical rule: if you would not do it to a plumber you hired to fix your office bathroom, do not do it to your marketing contractor. You do not set the plumber's hours, give them a company email, invite them to your team meetings, or pay them bi-weekly on payroll. Apply the same logic to every contractor engagement. The HR rules and regulations guide covers the complete set of federal and state employment regulations.
When to Use Contractor Management Software
The tools you need to manage contractors depend on volume. At one contractor, a folder with three documents (W-9, ICA, SOW) and a row in your accounting software is sufficient. At 5+ concurrent contractors, the administrative overhead of tracking documents, access, payments, and year-end 1099 filing justifies a system.
| Contractor Volume | What You Need | Recommended Approach |
|---|---|---|
| 1-2 contractors | W-9 + ICA storage, payment tracking, 1099 filing | Google Drive folder + accounting software (QuickBooks, Xero) |
| 3-5 contractors | Add: e-signature for agreements, access tracking, document expiration alerts | Onboarding platform with e-signature + accounting software |
| 5-10 contractors | Add: contractor profiles in HR system, automated document collection, centralized access management | HR platform that handles both employees and contractors in one system |
| 10+ contractors | Add: 1099 batch filing, contractor self-service portal, compliance dashboards | Dedicated contractor management or full HR platform with contractor module |
The key capability that matters from contractor number one: e-signature for the ICA and W-9. Printing, signing, scanning, and emailing PDF contracts is slow, error-prone, and creates a filing nightmare. E-signature takes 10 minutes for both parties and produces a timestamped, legally valid, automatically stored document. FirstHR handles contractor document collection and e-signature alongside employee onboarding at $98/month flat, so you do not need separate tools for W-2 and 1099 workers.
The tool that most small businesses do not need: a dedicated contractor management platform designed for companies with 20+ contractors, international payments, and automated 1099 generation. At 3 to 10 US-based contractors, the per-contractor pricing ($29-$49 per contractor per month) exceeds the value compared to a flat-fee platform. The contractor onboarding software comparison covers when each tool category makes sense.
Converting a Contractor to an Employee
Sometimes a contractor engagement evolves into a permanent need. When the "project" has been renewed three times and the contractor works 30+ hours per week exclusively for your company, it is time to have the conversion conversation. Converting a contractor to an employee is straightforward: end the contractor agreement, complete full employee onboarding paperwork (I-9, W-4, state forms), add them to payroll and benefits, and adjust the working relationship accordingly.
The conversion is forward-looking. You do not retroactively reclassify past contractor payments as wages. The employee start date is the conversion date. Document the reason for the conversion (role became permanent, scope changed, ongoing need identified) in case the classification of the prior contractor period is ever questioned.
Having one onboarding system that handles both contractors and employees makes this transition smoother. The person already has a profile in your system; you change their classification, trigger the employee onboarding workflow, and the system generates the right forms. The how to hire employees guide covers the full W-2 hiring process.
Frequently Asked Questions
Do I need an EIN to hire an independent contractor?
You do not need an EIN specifically to hire an independent contractor. However, you need an EIN to file 1099-NEC forms with the IRS, which is required if you pay a contractor $600 or more in a calendar year. Most small businesses already have an EIN for payroll, banking, or tax filing purposes. If you do not have one, you can apply for free on the IRS website and receive it immediately online.
How do I pay an independent contractor?
Pay contractors based on invoices they submit for completed work, not on a regular payroll schedule. Common payment methods include business check, ACH bank transfer, wire transfer, or payment platforms like PayPal or Venmo (business accounts). Never run contractor payments through your payroll system because this creates a record that looks like employment. Agree on payment terms (net-15, net-30) in the Independent Contractor Agreement before work begins.
What is the difference between a 1099 contractor and a W-2 employee?
A 1099 contractor is a self-employed worker who controls how, when, and where they perform work. A W-2 employee works under your direction and control. Key differences: contractors submit W-9 forms and receive 1099-NEC at year end; employees complete I-9 and W-4 forms and receive W-2. Contractors handle their own taxes and benefits. Employees have taxes withheld and may receive employer-provided benefits. The classification is based on the nature of the working relationship, not on what you call the worker.
Can an independent contractor work full time for one client?
There is no legal prohibition against a contractor working full-time hours for a single client. However, exclusivity combined with behavioral control (setting hours, dictating methods, requiring onsite presence) is one of the strongest indicators of misclassification. If a worker works 40 hours per week, exclusively for your company, using your equipment, at your office, on your schedule, the IRS will likely classify them as an employee regardless of what the contract says. The arrangement itself determines classification, not the label.
What is the $600 threshold for 1099-NEC?
If you pay an independent contractor $600 or more in a calendar year, you must file a 1099-NEC with the IRS and provide a copy to the contractor by January 31 of the following year. Payments below $600 do not require a 1099-NEC, but the contractor is still required to report the income on their tax return. The $600 threshold applies per contractor per year, not per payment. Track cumulative payments to each contractor throughout the year.
What forms do I need to hire a 1099 contractor?
Two forms are essential. First, collect a W-9 (Request for Taxpayer Identification Number) from the contractor before you make any payment. This gives you their legal name, business name, tax classification, and Social Security or EIN number. Second, file a 1099-NEC (Nonemployee Compensation) with the IRS by January 31 if you paid the contractor $600 or more during the calendar year. Beyond tax forms, you should also have a signed Independent Contractor Agreement (ICA) that defines the scope of work, payment terms, and the independent nature of the relationship.
What happens if I misclassify an employee as a contractor?
Misclassification exposes your business to back taxes (employer share of FICA, income tax withholding), penalties, interest, state unemployment tax liability, workers compensation back premiums, and potential FLSA violations (overtime, minimum wage). For willful misclassification, criminal penalties apply. The financial exposure for misclassifying 5 workers over 3 years can exceed $200,000 when you combine federal taxes, state penalties, and back wages. The IRS, DOL, and state agencies actively audit for misclassification.
Do I need a written contract to hire a contractor?
While federal law does not require a written contract to hire an independent contractor, operating without one is extremely risky. A written Independent Contractor Agreement (ICA) establishes the independent nature of the relationship, defines project scope and deliverables, sets payment terms, assigns intellectual property rights, and protects both parties. In a misclassification audit, a well-drafted ICA that accurately reflects the working arrangement is evidence supporting contractor status. Without a written agreement, you have no documentation to support your classification decision.
Can I convert a contractor to a full-time employee?
Yes, and many growing businesses do this when a project role becomes permanent. To convert properly: end the contractor agreement, complete all employee onboarding paperwork (I-9, W-4, state forms), enroll the person in payroll and benefits, update their profile in your HR system from contractor to employee, and adjust the working relationship (you can now control hours, methods, and equipment). Do not retroactively reclassify past contractor payments as wages; the conversion applies going forward. Consider using an onboarding platform to manage the transition paperwork.
Is hiring a contractor cheaper than hiring an employee?
Contractors have a higher hourly rate but lower total cost in many scenarios. You do not pay employer FICA (7.65%), unemployment tax, workers compensation insurance, health insurance, PTO, or other benefits. For project-based work, contractors eliminate the cost of maintaining a full-time position between projects. The break-even point is typically around 30-40% above the equivalent employee hourly rate. If a contractor charges less than 130% of what you would pay an employee for the same work, the contractor is almost certainly cheaper after factoring in taxes and benefits.