A consulting agreement—also known as a service agreement, independent contractor agreement, 1099 agreement, or freelance contract—is a contract between a client willing to pay for the performance of consulting services by a consultant (person, sole-proprietor, or single-member LLC) who is willing to perform the services. Under the Internal Revenue Code (26 U.S.C. §3509), an independent contractor is not an employee, and the client hiring an independent contractor is not responsible for tax withholdings and payment of FICA taxes.

A consulting agreement should be in writing, and will usually address issues such as the (1) relationship of the parties (usually independent contractor and not employer/employee or joint venturers); (2) scope of the work (description of the services); (3) terms and length of the project or service; (4) payment details, including fee deposits, hourly rate, and billing procedure; (5) representations and warranties; (6) liability and indemnification; (7) intellectual property ownership and rights; (8) confidentiality; (9) non-solicitation; (10) dispute resolution; (11) rules for changing or modifying the agreement; and (12) non-waiver provision to preserve the right to enforce the agreement.

A consultant may also operate as a corporation or multi-member limited liability company, for example, and the consulting agreement with such an entity will be similar to an agreement with a consultant who is an independent contractor.

In Utah, a consulting agreement is a legally binding contract between a client and a consultant, where the consultant agrees to provide services as an independent contractor rather than as an employee. This distinction is important for tax purposes, as outlined in the Internal Revenue Code (26 U.S.C. §3509), which indicates that clients are not responsible for withholding taxes or paying FICA taxes for independent contractors. The written agreement typically outlines the nature of the working relationship, scope of work, duration, payment terms, and other key provisions such as representations and warranties, liability, intellectual property rights, confidentiality, non-solicitation clauses, dispute resolution mechanisms, and terms for amending the contract. It's important to note that whether the consultant operates as a sole proprietor, single-member LLC, corporation, or multi-member LLC, the structure of the consulting agreement generally remains consistent, tailored to establish the consultant as an independent contractor and to address the specific terms of the service arrangement.