An agency agreement is a contract in which one party, called the principal, authorizes another, called the agent, to act on the principal’s behalf and to create legal obligations that bind the principal as if the principal had acted personally. Because any deal the agent makes within their authority sticks to the principal, the document has one job above all others: define exactly what the agent can and cannot do. Everything else in the contract — pay, duration, confidentiality, termination — arranges the details around that central grant of authority.
The elements below appear in almost every agency arrangement, whether you’re hiring a sales representative, listing property with a broker, or appointing someone to manage financial affairs.
How the Relationship Gets Created
An agency can arise in three ways, and only the first gives you the clarity that heads off disputes.
An express agreement is negotiated directly between principal and agent, either orally or in writing. Writing is almost always the better choice, and sometimes the only choice. Under the equal dignities rule, if the underlying transaction has to be in writing to be enforceable — a real estate sale, for instance — then the agent’s authorization to execute it must be in writing too. Skip that step and the agent’s signature may not bind anyone.
An implied agency develops from conduct. When a principal consistently lets someone act on their behalf without objection, the law recognizes an agency for that function. A business owner who routinely lets an employee sign purchase orders has created an implied agency for purchasing, even without a formal appointment.
The third route is ratification. An agent acts without authority, and the principal later approves the transaction by accepting its benefits. That retroactive approval binds the principal to the third party as if the authority had existed all along. Ratification is all-or-nothing; the principal cannot keep the favorable pieces and reject the rest.
The Three Types of Authority
Whether a particular deal binds the principal turns on which kind of authority the agent had at the moment of the transaction. The distinctions matter because a principal can end up liable for transactions they never intended to authorize.
Actual Express Authority
This is power the principal directly and specifically grants in the agreement: signing lease agreements, placing orders up to a stated dollar limit, negotiating the sale of a particular asset. It’s the cleanest form of authority and the easiest to prove.
Actual Implied Authority
Implied authority fills the gaps around what’s expressly granted, covering actions reasonably necessary to carry out the assigned tasks. A real estate agent expressly authorized to sell a commercial building has implied authority to hire a photographer, place advertisements, and schedule showings, none of which the agreement needs to list.
Apparent Authority
Apparent authority exists entirely in the eyes of third parties. It arises when the principal’s own conduct leads an outsider to reasonably believe the agent is authorized, regardless of what the private agreement says. The legal focus is on the third party’s perspective.
This is where principals get burned. Terminating an agent’s actual authority does not automatically eliminate their apparent authority. Until the principal takes affirmative steps to tell third parties that the agent no longer represents them, the appearance of authority persists, and contracts entered under that appearance can still bind the principal.
Terms the Agreement Needs to Nail Down
The negotiated terms of a written agreement override default legal rules when they are specific and unambiguous. Precision in drafting is worth every minute spent on it.
Scope of Authority
This is the single most important clause. It must define what the agent may do and, just as clearly, what they may not. A purchasing agent’s scope might allow orders up to $50,000 without additional sign-off while requiring principal approval above that. A sales agent’s scope might cover one territory or product line and exclude everything else.
Vague language is the principal’s enemy. A clause saying the agent can “handle purchasing” invites broad interpretation. A clause saying the agent can “approve purchase orders for office supplies up to $5,000 per transaction” leaves far less room for argument, and less room for apparent or implied authority to expand beyond what the principal intended.
Exclusive or Non-Exclusive
The agreement should say whether the agent is the sole representative for the defined scope or one of several. Under an exclusive appointment, the principal cannot bring in competing agents for the same function or territory during the term, and the agent typically earns their commission on transactions within the scope regardless of who found the counterparty. A non-exclusive arrangement gives the principal more flexibility but tends to reduce the agent’s incentive to invest heavily.
Compensation
The agreement must spell out how and when the agent gets paid. Structures include fixed salary, retainer, percentage commission, or a mix. A clear schedule of dates and triggering events prevents the most common source of agency disputes: money.
Commissions need extra care. Define precisely when a commission is earned. When the agent signs the deal? When goods are delivered? When the principal actually receives payment? For a real estate agent, commission typically becomes payable at closing. For a sales representative, it may be tied to invoice payment. Those distinctions decide who bears the risk if a deal falls apart after the agent’s work is done.
Duration and Renewal
Every agreement needs a start date, an end date, and rules for what happens at expiration. A contract might run 24 months and automatically renew for successive 12-month terms unless either party gives written notice of non-renewal at least 90 days out. Without a defined term, the relationship can drift into an indefinite arrangement that becomes hard to exit cleanly.
Indemnification
An indemnification clause allocates the financial risk of things going wrong. It usually runs both ways. The principal agrees to reimburse the agent for losses, expenses, and legal costs incurred while acting within the authorized scope. The agent agrees to cover the principal for losses caused by the agent’s negligence or unauthorized actions. That two-way protection gives both sides a financial reason to stay inside the agreed lines.
Confidentiality and Restrictive Covenants
Agents routinely see trade secrets, customer lists, and pricing strategies. A confidentiality clause defines what qualifies as confidential, how the agent must handle it, and how long the obligation lasts. Standard practice is a set period after the agreement ends, with an exception for trade secrets, which stay protected as long as they qualify as trade secrets under applicable law.
Federal law provides a backstop. The Defend Trade Secrets Act lets a principal sue in federal court for misappropriation of trade secrets. Remedies include injunctive relief, damages for actual loss and unjust enrichment, and up to double damages if the misappropriation was willful.1Office of the Law Revision Counsel. 18 USC 1836 – Civil Proceedings
Non-compete clauses are a different matter. Enforceability varies dramatically by jurisdiction. Four states ban them outright, and more than 30 others impose significant limits on their scope and duration. A non-compete in an agency agreement is only as strong as the state law that governs it, and an overbroad restriction may be unenforceable regardless of what the parties signed.
Duties the Law Imposes on Top of the Contract
Whatever the contract says, the law puts its own obligations on both sides. The agent’s are heavier because the relationship is fiduciary: the agent must prioritize the principal’s interests above their own.
The Agent’s Fiduciary Duties
The duty of loyalty comes first. The agent cannot secretly profit from the relationship, compete with the principal, or take opportunities that belong to the principal without full disclosure and informed consent. This duty exists whether or not the contract mentions it.
The duty of obedience requires the agent to follow lawful and reasonable instructions. What counts as reasonable depends on the industry and the nature of the work. A principal can dictate a sales pitch; a client cannot dictate a lawyer’s courtroom tactics.2Saylor Academy. Duties between Agent and Principal
The duty of notification requires the agent to promptly share material information — every offer, opportunity, or problem within the scope of the agency. Sitting on bad news is itself a breach.
The duty of reasonable care requires performance with the diligence and skill a competent person in a similar position would exercise. An experienced commercial broker is held to a higher standard than a first-time intern.
The duty of accounting requires accurate records of all money and property handled for the principal. The principal’s funds must be kept in separate accounts. Commingling is a breach even if every dollar is eventually returned.
The Principal’s Duties
The principal owes compensation as agreed once the agent performs. The principal must also cooperate rather than sabotage the agent’s ability to do the authorized work. And the principal must indemnify the agent for losses and expenses reasonably incurred within the scope of authority. If the agent books travel to meet a client at the principal’s direction, the principal covers that cost.
How the Agreement Ends
Agency agreements terminate either because the parties choose to end them or because the law ends them automatically. How termination happens decides whether anyone owes damages.
Termination by the Parties
The cleanest ending is fulfillment of purpose: the agent sells the listed property, and the job is done. Expiration of a fixed term works the same way. The parties can also agree to end early through mutual rescission.
Either side can also walk away unilaterally, the principal through revocation and the agent through renunciation. Both usually have the power to do this at any time, but power and right are not the same. Ending the relationship without cause before the term expires can trigger a breach of contract claim and damages for the income or performance the other side lost.
Termination by Operation of Law
Some events end the agency automatically. The death of either the principal or the agent ends the relationship immediately, even if the surviving party learns of the death later. Mental incapacity has a similar effect, though courts sometimes uphold transactions with third parties who had no reason to know about the incapacity. The principal’s bankruptcy and the destruction of the specific subject matter of the agency — a building burns down before the agent can sell it — also trigger automatic termination.
Durable and Irrevocable Agencies
Two exceptions override the default rules. A durable power of attorney is drafted specifically to survive the principal’s incapacity by including language that keeps the agent’s authority in effect during periods when the principal cannot make decisions. Every state recognizes durable powers of attorney, though the required language and formalities vary.
An agency coupled with an interest is one where the agent holds a stake in the subject matter itself, not just the right to earn a commission. A lender authorized to sell collateral securing a loan holds an agency coupled with an interest. The principal cannot unilaterally revoke it, and it is not terminated by the principal’s death or incapacity. The agent’s interest in the underlying property makes the authority irrevocable until that interest is satisfied.
What to Do After Termination
However the agency ends, the principal should immediately notify third parties who previously dealt with the agent. This is what shuts down lingering apparent authority. A written notice to known vendors and business contacts is the standard approach. Skip it, and the former agent can still bind the principal to contracts with third parties who reasonably believe the authority continued. Confidentiality and non-compete obligations, if included, survive termination for the period the contract specifies.
Dispute Resolution and Governing Law
Many agency agreements specify how disputes get resolved — mediation, binding arbitration, or litigation — and which jurisdiction’s law governs the contract. These clauses matter most when principal and agent operate in different states or countries. Without a governing-law clause, a dispute can trigger a costly preliminary fight over which state’s rules apply before anyone reaches the actual disagreement. An arbitration clause can lower cost and keep proceedings private, but it also means giving up the right to a jury trial. Both sides should understand that trade-off before signing.