Content
- Work Arrangements
- Business & Legal Structures
- Contracts & Engagements
- Finding Work
- Rates & Pay
- Taxes
- Classification & Compliance
- Vendor Management
- Practical Takeaway
The world of freelancing and contracting has its own language - and if you don't speak it, you're at a disadvantage before the first conversation even starts. Whether you're a contractor trying to understand your options, a recruiter navigating staffing arrangements, or a business hiring outside talent, the terminology matters. This glossary breaks down every key term in the freelancer and contractor industry, from work arrangements and tax classifications to vendor management and compliance.
Work Arrangements
1099 Worker A self-employed individual who receives a 1099 tax form rather than a W-2 from their client. The "1099" label comes from the IRS form used to report their income. Unlike employees, 1099 workers are responsible for their own taxes, benefits, and equipment. It's one of the most common classifications in the contractor world, and it's worth understanding well - getting it wrong has real consequences for both parties.
C2C (Corp-to-Corp) A business arrangement where one company contracts with another company, rather than an individual contractor directly. In practice, the contractor typically operates through their own LLC or S-Corp and invoices the client's company directly. C2C arrangements are popular with experienced contractors because they offer tax advantages and a layer of liability protection.
W-2 Employee An individual who is employed directly by a company, with taxes withheld from each paycheck. W-2 workers are entitled to statutory benefits and protections. In the contracting world, you'll sometimes work as a W-2 employee through a staffing agency - you're on their payroll, not the client's.
Freelancer A self-employed professional who works independently for multiple clients, typically on a project-by-project basis. Freelancers set their own rates, manage their own schedules, and aren't tied to any single employer. The term is most common in creative, marketing, and digital fields, though it increasingly applies across industries.
Independent Contractor (IC) A broad term for any self-employed individual who provides services to clients under a contract, rather than as an employee. ICs control how and when they work, use their own tools, and handle their own taxes. The key distinction is independence - the client directs the outcome, not the day-to-day process.
Sole Proprietor The simplest business structure for self-employed individuals. A sole proprietor runs their business as an individual, with no legal separation between themselves and their business. There's no formal registration required, but it also means personal assets are exposed to business liability.
Subcontractor A contractor hired by another contractor (or agency) to perform part of a larger project. Subcontractors typically have no direct relationship with the end client. If you've ever been brought onto a project through a third party who was themselves hired by the actual client, you were a subcontractor.
Consultant A specialist hired to provide expert advice or strategic input, often on a short-term basis. The difference between a consultant and a contractor can be subtle, but generally: consultants advise, contractors do. That said, the terms are used interchangeably in many industries - context matters.
Augmented Staff / Staff Aug Short for staff augmentation. This is when a business brings in external workers to supplement their existing team, filling skill gaps or scaling capacity without making permanent hires. Staff aug workers typically work alongside internal employees, often on-site or integrated into the client's tools and processes.
→ Not sure where your worker fits? Read: Freelancer vs Contractor — the main differences explained
Business & Legal Structures
LLC (Limited Liability Company) A legal business structure that separates your personal assets from your business liabilities. For contractors, forming an LLC means your personal finances are protected if a client sues your business. LLCs are also flexible from a tax perspective - they can be taxed as a sole proprietor, partnership, or corporation depending on your election.
S-Corp A tax designation (not a business structure in itself) that can apply to LLCs or corporations. Electing S-Corp status allows business owners to split their income into a salary and distributions, which can reduce self-employment tax. It's typically worth considering once your annual earnings exceed a certain threshold, but involves more administrative overhead.
EIN (Employer Identification Number) A nine-digit number issued by the IRS that identifies your business for tax purposes - essentially a Social Security Number for your company. You'll need one if you form an LLC, hire employees, or open a business bank account. Many clients also request it before cutting a payment.
DBA (Doing Business As) A registered trade name that's different from your legal name or your LLC's official name. For example, "Jane Smith LLC" might operate as "Bright Copy Studio." A DBA lets you brand your business without forming a new legal entity. Requirements vary by state.
Contracts & Engagements
SoW (Statement of Work) A document that defines the specific work to be done under a contract - including deliverables, timelines, milestones, and sometimes pricing. A SoW typically sits underneath a broader Master Service Agreement. If there's ever a dispute about what was agreed, the SoW is usually the first document everyone turns to.
MSA (Master Service Agreement) A foundational contract that establishes the overarching terms and conditions between two parties - covering things like payment terms, intellectual property, confidentiality, and liability. Once an MSA is in place, individual projects are typically governed by separate SoWs without needing to renegotiate the main terms each time.
NDA (Non-Disclosure Agreement) A legally binding agreement that prevents one or both parties from sharing confidential information with third parties. NDAs are standard practice in most contractor engagements - you'll likely sign one before you've even seen the full project brief.
Non-Compete Agreement A clause or standalone agreement that restricts a contractor from working with a client's direct competitors for a specified period after the engagement ends. Enforceability varies significantly by state and country, so it's worth understanding what you're signing before agreeing.
Right to Hire A provision in a contract that gives the client the option to convert a contractor into a full-time employee - usually after a set period or upon paying a conversion fee to the staffing agency. If you're a contractor open to permanent roles, this is a term worth paying attention to.
Fixed-Price Contract An agreement where the total cost of a project is set in advance, regardless of how long it actually takes. Good for clients who want budget certainty; riskier for contractors who underestimate the scope. Scope creep is the main hazard here - a solid SoW is essential.
Time & Materials (T&M) A billing model where the contractor charges for the actual time spent and materials used, typically at an agreed hourly or daily rate. T&M is common for projects where the full scope isn't known upfront. It's lower risk for contractors, though clients may prefer fixed-price for that reason.
Evergreen Contract A contract that automatically renews at the end of each term unless one party gives notice to terminate. Common in ongoing service relationships, evergreen contracts provide stability - but it's easy to let them roll over longer than intended if no one's paying attention.
Change Order A formal amendment to an existing contract that documents changes to scope, timeline, or pricing. If a client asks for something outside the original SoW, a change order protects both sides by creating a paper trail. Never absorb additional work without one.
Finding Work
Staffing Agency A third-party company that connects contractors with client businesses. Agencies handle sourcing, screening, and often payroll. In return, they take a cut of the bill rate. For contractors, agencies can open doors to opportunities that aren't publicly listed - and for clients, they streamline the hiring process considerably.
Recruiter An individual (either in-house at a company or working for an agency) responsible for finding and placing talent. Contractors often build long-term relationships with specialist recruiters in their field - a good recruiter can be one of your most valuable professional contacts.
W2 via Agency An arrangement where a contractor works a contract placement but is technically employed by the staffing agency, receiving a W-2 at tax time. The agency handles payroll taxes and sometimes benefits. It's common for contractors who prefer not to manage the administrative side of self-employment.
Direct Client A client who engages a contractor without an intermediary agency involved. Working direct means higher take-home pay (no agency markup), but you're responsible for sourcing the work, managing contracts, and handling all compliance yourself.
Bench A term used by staffing agencies to describe contractors who are available for placement but not currently on an active engagement. Being "on the bench" isn't ideal for long - it typically means reduced or no income while waiting for the next role.
Rates & Pay
Bill Rate The rate charged to the client for a contractor's services. This is what the client pays - it includes the contractor's pay plus any agency margin, taxes, and overhead.
Pay Rate The rate the contractor actually receives. When working through an agency, your pay rate will always be lower than the bill rate - the difference is the agency's spread.
Spread / Markup The difference between the bill rate and the pay rate - i.e., what the agency keeps. A typical agency markup might range from 20% to 50% or more, depending on the market and the type of role. Knowing the spread helps you negotiate more effectively.
Net-30 / Net-60 Standard payment terms that specify how long a client has to pay an invoice after it's received. Net-30 means payment within 30 days; Net-60 means within 60. For freelancers managing cash flow, these terms matter - always clarify them before starting work.
Retainer An ongoing, recurring payment a client makes to secure a contractor's availability over a set period - often monthly. Retainers provide income stability for contractors and priority access for clients. They work best when the workload is relatively predictable.
Milestone Payment A payment tied to the completion of a specific project stage rather than hours worked. Common in fixed-price engagements, milestone payments reduce risk on both sides - contractors get paid progressively, and clients link payment to tangible progress.
Taxes
1099-NEC The IRS form used to report payments made to independent contractors of $600 or more in a tax year. Clients are required to issue one to each contractor they pay above that threshold. NEC stands for "Non-Employee Compensation." If you're self-employed, expect to receive several of these each January.
Self-Employment Tax The tax that self-employed individuals pay to cover Social Security and Medicare contributions - the equivalent of what employers and employees each contribute when someone is on payroll. As a 1099 worker, you pay both halves, which currently comes to 15.3% on net self-employment income.
Quarterly Estimated Taxes Because no employer is withholding taxes on your behalf, self-employed individuals are generally required to pay estimated taxes four times a year. Missing or underpaying these can result in penalties, so it's worth setting aside a percentage of every payment you receive.
Pass-Through Income Income from a business entity (like an LLC or S-Corp) that "passes through" to the owner's personal tax return, rather than being taxed at the corporate level first. Most freelancers and small contractors benefit from pass-through taxation, though the specifics depend on how your business is structured.
Business Deductions Legitimate expenses that reduce your taxable income as a self-employed person. Common deductions include home office costs, equipment, software subscriptions, professional development, and health insurance premiums. Keeping good records throughout the year makes a significant difference come tax time.
Classification & Compliance
Worker Misclassification When a worker is incorrectly classified as an independent contractor when they should legally be an employee - or vice versa. Misclassification can expose clients to back taxes, penalties, and legal claims. It's one of the most scrutinised areas in contingent workforce management, and the risk has grown significantly as regulators have tightened enforcement.
Right to Control Test A framework used to determine whether a worker is an employee or an independent contractor. It examines factors like how much control the client has over how work is done (not just what work is done), whether the worker uses their own tools, and whether the relationship is exclusive. Different jurisdictions apply variations of this test.
IR35 UK legislation designed to combat "disguised employment" - situations where contractors operate through limited companies but function, in practice, like employees. Under IR35, if a contractor is deemed "inside" the rules, they pay employment taxes despite not being on payroll. Since 2021, the responsibility for determining IR35 status has largely shifted to medium and large businesses engaging contractors. → Everything contractors and businesses need to know about IR35
AB5 A California law (passed in 2019) that changed how workers are classified in the state, making it harder for companies to classify workers as independent contractors. It introduced a strict "ABC test" for classification. AB5 had widespread implications across industries and triggered significant legal challenges - some sectors secured exemptions, but it remains a significant compliance consideration for businesses operating in California.
Co-Employment Risk The legal risk that arises when two organisations (for example, a staffing agency and a client company) both exercise enough control over a worker that they're both considered employers. Co-employment can create liability for benefits, workers' compensation, and discrimination claims. It's a key reason why many large enterprises work with Managed Service Providers to structure their contingent workforce properly.
IC Compliance The processes and checks a business uses to ensure that independent contractors are correctly classified and engaged in line with applicable laws. IC compliance typically involves reviewing classification criteria, collecting the right documentation, and using tools or services that help manage risk at scale. → What is contractor compliance — and how do you get it right?
→ Read our full guide on how to avoid employee misclassification
Vendor Management
Vendor In a workforce context, a vendor is an external company or staffing agency that supplies contractors or services to another business. Rather than engaging workers directly, many organisations route their contingent labour through approved vendors.
Vendor Management System (VMS) A software platform used to manage relationships with external vendors, contractors, and staffing agencies. VMS tools centralise sourcing, contracts, timesheets, compliance documentation, and spend data. They're common in mid-to-large enterprises running significant contingent workforce programmes. → What is a VMS? Features, benefits, and how to choose one
Managed Service Provider (MSP) A third-party company that manages an organisation's entire contingent workforce programme on their behalf - often using a VMS to do so. MSPs handle everything from vendor selection and compliance to invoicing and reporting. They sit between the client and the staffing supply chain.
Preferred Vendor List (PVL) A curated list of pre-approved staffing agencies or service providers that a company has agreed to work with. Being on a client's PVL can mean more consistent work for agencies - and for contractors, understanding whether your agency has PVL status can affect your access to certain opportunities.
Practical Takeaway
Understanding this terminology isn't just academic - it directly affects how much you earn, how you're taxed, and how protected you are. Whether you're negotiating your first contract or reviewing a new engagement, knowing what each term actually means puts you in a much stronger position. Bookmark this glossary as your go-to reference any time a new term comes up in a contract, job posting, or negotiation.
If you're a business managing freelancers, contractors, or vendors at any kind of scale, a lot of these terms stop being abstract pretty quickly. TalentDesk is built to handle the operational reality behind them - from IC classification and compliant onboarding, to contracts, payments across 190+ countries, and full vendor management, all in one platform. → See how TalentDesk works
