Private contractors are self-employed professionals hired to deliver a specific result rather than to fill a permanent job. They work under a contract, set their own methods, handle their own taxes and insurance, and move on once the deliverable is accepted. The work spans construction, software, consulting, accounting, and healthcare, but the shape of the relationship is the same across all of them: a defined scope, an agreed price, and independence in how the job gets done.
The Work Contractors Actually Perform
Construction is the most visible corner of the field. General contractors coordinate entire building projects, managing timelines across electricians, plumbers, and other trades while keeping the work up to code. The model reaches well beyond that. Software developers get brought in for system upgrades or cybersecurity work. Management consultants advise companies through mergers or operational overhauls. Accountants handle audits and compliance reviews where an outside perspective matters. Healthcare organizations hire traveling nurses and specialists to cover staffing gaps during high-demand periods.
What ties these roles together isn’t the type of work but the structure of the relationship. A contractor provides a service, delivers the result, and moves on. The client doesn’t provide benefits, doesn’t control the contractor’s daily schedule, and typically doesn’t supply the tools. That independence is the defining feature, and it carries real consequences for how the work is taxed, insured, and documented.
How Contractor Work Differs From Employment
The legal distinction between a contractor and an employee comes down to control. The IRS evaluates three categories: behavioral control (does the company dictate how you do the work?), financial control (does the company control the business side, like how you’re paid and who supplies your tools?), and the nature of the relationship (are there employee-type benefits, and is the work a key part of the company’s regular business?). All three categories are weighed together, and no single factor is decisive.
Under common-law rules, a hiring party can specify what the final result should look like but generally cannot control the methods a contractor uses to get there. A company can say “build this deck by June” but can’t dictate which hours the contractor works or the order of tasks. What matters is whether the company has the right to control the details of how services are performed, not whether it actually exercises that control day to day.
The Department of Labor uses a related but broader framework under the Fair Labor Standards Act called the “economic reality” test, which looks at whether a worker is economically dependent on the hiring entity rather than truly operating an independent business. Factors include the worker’s opportunity for profit or loss, the permanence of the relationship, and how much skill and initiative the work requires. A worker who serves only one client year-round, uses that client’s equipment, and has no real ability to profit from their own business decisions starts looking a lot more like an employee, regardless of what the contract says.
What a Contractor Is Responsible For
Being a contractor means running a small business alongside doing the work. No employer withholds taxes, provides insurance, or covers equipment. Those responsibilities land squarely on the contractor.
Taxes
Contractors pay both the employer and employee shares of Social Security and Medicare, which comes to 15.3% of net self-employment income. That breaks down to 12.4% for Social Security on earnings up to $184,500 in 2026, and 2.9% for Medicare on all earnings with no cap. Because nothing is withheld at the source, the IRS expects payment through quarterly estimated taxes due April 15, June 15, September 15, and January 15 of the following year. Missing these triggers an underpayment penalty. You can generally avoid the penalty if you owe less than $1,000 at filing time, or if you’ve paid at least 90% of the current year’s tax liability or 100% of last year’s (110% if your adjusted gross income exceeded $150,000).
Starting in 2026, clients must report payments to contractors on Form 1099-NEC when those payments total $2,000 or more during the calendar year, up from the previous $600 threshold. The higher threshold means some contractors will receive fewer 1099 forms, but every dollar earned is still reportable income whether or not a 1099 arrives.
Against that tax load, contractors get to deduct ordinary and necessary business expenses on Schedule C, which reduces both income tax and self-employment tax. Vehicle expenses, equipment and software, professional liability insurance premiums, office supplies, business travel, and fees paid to accountants or attorneys are all standard. Health insurance premiums for yourself, your spouse, and dependents are deductible as an adjustment to gross income on Schedule 1, provided you weren’t eligible for an employer-sponsored plan through a spouse. Sole proprietors, LLCs, and S-corporations can also deduct up to 20% of qualified business income under Section 199A, a provision made permanent in 2025, with a phaseout at higher incomes for consulting, law, accounting, and similar service work.
Equipment and Insurance
Providing your own equipment and materials is standard. A tradesperson brings their own tools and safety gear; a consultant provides their own computer and software licenses. This separation of resources reinforces the independent nature of the relationship and reduces overhead for the client. It also means you’re on the hook if something breaks, gets stolen, or causes damage.
Professional liability insurance, sometimes called errors and omissions coverage, protects against claims arising from mistakes in your work. If a software contractor’s code causes a client’s system to crash, or a consultant’s advice leads to a financial loss, this coverage pays for legal defense and any resulting damages. General liability insurance covers bodily injury or property damage related to your business operations. Workers’ compensation, while not required for solo contractors in most states, can cover your own medical expenses and lost income if you’re injured on the job. Operating without insurance isn’t illegal for most solo contractors, but a single lawsuit or serious injury can be financially devastating when there’s no employer safety net.
Retirement
Without an employer-sponsored 401(k), contractors build their own retirement plans. A SEP IRA allows contributions of up to 25% of net self-employment earnings, capped at $69,000 in 2026, with the whole contribution coming from the employer side. A Solo 401(k) lets you defer up to $24,500 as an employee contribution in 2026, layer employer profit-sharing on top, and add catch-up contributions if you’re 50 or older ($8,000, or $11,250 for workers aged 60 through 63 under SECURE 2.0). Solo 401(k) plans also offer a Roth option.
The Contract Terms That Shape the Job
Contractors work under a defined scope of work, often formalized in a Statement of Work, that specifies tasks, deadlines, quality standards, and payment terms. The engagement ends once the deliverables are met and accepted. Success is measured by output, not hours logged. Beyond scope, a few clauses shape the work in ways worth reading closely before signing.
Intellectual Property
Unlike employees, whose work product generally belongs to the employer by default, contractors typically retain ownership of what they produce unless the contract explicitly transfers it. An intellectual property assignment clause shifts ownership of the finished deliverables to the client upon full payment. Contractors usually retain rights to any pre-existing tools, methods, or frameworks they brought into the project, with the client getting a license to use those elements as incorporated in the final work. If the contract doesn’t address IP ownership at all, disputes over who controls the end product become likely.
Indemnification
Most contractor agreements include an indemnification clause, sometimes called a “hold harmless” provision, that shifts certain risks from the client to the contractor. If a third party sues the client over something the contractor did or failed to do, the contractor agrees to cover the client’s legal costs and damages. These clauses are generally enforceable, though most states prohibit indemnification for gross negligence or intentional wrongdoing. A broadly worded clause can create significant financial exposure, so the scope is worth understanding before signing.
Subcontracting
Unless the contract says otherwise, contractors generally have the right to delegate portions of the work to subcontractors. That ability to hire helpers or specialists is actually one of the markers that distinguishes an independent contractor from an employee under the IRS control test. Many clients restrict subcontracting through explicit language, especially for work involving confidential information or specialized skills, so check whether your agreement requires client approval first.
Business Structure
How a contractor sets up the business affects taxes, personal liability, and client credibility. Most start as sole proprietors by default, with no legal separation between the person and the business. Income goes on Schedule C, no corporate filings apply, and personal assets are exposed if a client sues.
Forming a limited liability company creates a legal wall between business and personal assets. If the business is sued, only the LLC’s assets are at risk. A single-member LLC is treated as a disregarded entity for tax purposes, so filing still happens on Schedule C. The protection isn’t absolute: mixing personal and business funds or personally guaranteeing a business loan can pierce that shield. LLCs require state filing fees and ongoing annual requirements that sole proprietors skip.
Contractors earning enough to make self-employment tax painful sometimes elect S-corporation tax treatment for their LLC by filing IRS Form 2553. Under that structure, you pay yourself a reasonable salary subject to payroll taxes and take remaining profits as distributions not subject to the 15.3% self-employment tax. The IRS scrutinizes whether the salary is genuinely reasonable for the work performed, and running payroll adds cost, so this generally makes sense only at higher income levels.
When the Contractor Label Doesn’t Fit
The line between contractor and employee isn’t just academic. When a company treats someone as a contractor but controls their work like an employee’s, it’s called misclassification, and the consequences reach both sides.
For the worker, misclassification means losing access to minimum wage and overtime protections under the Fair Labor Standards Act, unemployment insurance, employer-paid Social Security contributions, and workers’ compensation coverage. You pay the full 15.3% self-employment tax instead of splitting FICA with an employer, and you lose the safety net that employment law provides. If you suspect you should actually be classified as an employee, the IRS lets you request a determination by filing Form SS-8.