In agency law, the 3 types of agent authority are actual authority, apparent authority, and inherent authority. Each decides a different question. Actual authority asks what the principal told the agent. Apparent authority asks what the principal’s conduct told the third party. Inherent authority asks what comes with the agent’s position, regardless of what anyone said. Which one applies determines whether the principal is bound when the agent makes a deal.
Actual Authority
Actual authority exists when the principal genuinely intends to give the agent power to act, and the agent reasonably understands they have it. The communication runs directly between principal and agent. It comes in two forms.
Express Authority
Express authority is spelled out, in writing or verbally. A business owner who hands a manager a signed agreement saying “you may sign supplier contracts up to $50,000” has granted express authority. The boundaries are whatever the principal actually communicated. Written grants are cleaner because there’s a paper trail if a dispute arises, but verbal instructions create express authority too.
Implied Authority
Implied authority fills in the gaps. It covers actions the agent reasonably believes are necessary to carry out the assigned role, even if the principal never specifically mentioned them. Hire someone to manage your rental properties and they have implied authority to collect rent, arrange repairs, and sign leases, because those tasks are part of what property management means. No reasonable principal would expect a property manager to call for permission before scheduling a plumber.
Implied authority also grows out of industry custom and past dealings. If agents in a particular business have historically handled certain tasks, a new agent in that role can reasonably assume the same authority applies. The question is whether the agent’s belief was reasonable in the circumstances, not whether the principal had a specific intention about every possible action.
Apparent Authority
Apparent authority flips the perspective. Instead of asking what the principal told the agent, it asks what the principal’s conduct communicated to the third party. If a principal’s words or actions lead an outsider to reasonably believe the agent has authority, the principal is bound by what the agent does within that perceived scope, even when the agent had no actual authority at all.
Three elements must line up. First, the principal must have done something — a title, a pattern of allowing certain conduct, a direct representation — that created the appearance of authority. The agent’s own claims about their power don’t count; the appearance must trace back to the principal. Second, the third party must have actually relied on that appearance when entering the transaction. Third, that reliance must have been reasonable. A third party who knew or should have known the agent lacked authority can’t claim apparent authority as a shield.
Giving an employee the title “vice president of sales” is the usual example. Even if the person’s actual authority is limited to processing orders, a client has every reason to think a VP of sales can negotiate terms and close deals. The principal created the impression, and the law holds the principal to it. The doctrine exists because principals control how they present their agents to the world; if the presentation misleads, the principal bears the cost, not the innocent third party.
Inherent Authority
Inherent authority is the most contested of the three, and its role in modern agency law has shrunk. The idea is that certain authority flows from the agency relationship itself, regardless of what the principal communicated to anyone. If an agent holds a position where certain actions are customary, the principal can be liable for those actions even if they were never authorized and no third party relied on any representation from the principal.
It matters most in situations involving undisclosed principals, where the third party doesn’t even know an agent is acting for someone else. Apparent authority can’t help there, because the third party never formed any belief about the principal’s conduct. Inherent authority fills that gap by holding the hidden principal responsible when the agent does something typical for agents in that position.
The Declining Status of Inherent Authority
The Restatement (Third) of Agency, published by the American Law Institute, dropped the term “inherent agency power” entirely. The drafters concluded that apparent authority, estoppel, and restitution already cover most situations where inherent authority used to do the work. The Restatement (Third) preserves similar protections for third parties dealing with agents of undisclosed principals, but it frames them differently rather than relying on a freestanding “inherent authority” concept.
Some courts still apply inherent authority, particularly in jurisdictions that haven’t fully adopted the Restatement (Third)’s framework. If you’re reading a case or contract that discusses it, know that the doctrine is on shaky ground in many courts, and the trend is toward analyzing the same problems through apparent authority or estoppel.
When None of the Three Apply
Sometimes an agent makes a deal that falls outside all three types. The principal never granted permission, the principal’s conduct didn’t create any reasonable appearance of permission, and the action wasn’t customary for the agent’s role. The principal then has two options: walk away or ratify.
Ratification
Ratification is when a principal learns about an unauthorized act and decides to adopt it afterward. The agent had no authority at the time, but the principal’s later approval effectively creates authority retroactively. Once ratified, the deal becomes binding as if the agent had authority all along.
Ratification doesn’t require any special formality. A principal who accepts the benefits of an unauthorized deal — keeping the goods, depositing the payment, performing under the contract — can be found to have ratified through conduct alone. The catch is that ratification covers the entire transaction. A principal can’t cherry-pick the favorable terms and reject the rest.
The Agent’s Personal Liability
When an agent acts without authority and the principal doesn’t ratify, the agent is personally on the hook to the third party. The theory is that every agent implicitly warrants to the people they deal with that they actually have the authority they claim. If that turns out to be false, the third party can sue the agent directly for the losses caused by the broken deal. This is true even if the agent genuinely believed they had authority. The warranty doesn’t depend on the agent’s intent or good faith.
The exposure runs both ways. If you’re an agent, exceeding your authority isn’t just a problem with your principal; it can make you personally liable to the third party. If you’re a third party and the principal won’t honor a deal, the agent who made representations about their authority may be your path to recovery.
How Agent Authority Ends
Authority doesn’t last forever. An agent who keeps acting after their authority ends is acting without authorization, which exposes both the agent and potentially the principal to liability.
- Revocation or resignation. Either party can end the relationship. The principal can revoke, the agent can resign. In most situations the agency relationship is at will, though walking away might breach a separate contract between them.
- Completion of purpose. If the agent was appointed to handle a specific task, authority ends when that task is finished.
- Expiration of time. Authority granted for a set period ends when that period runs out. If no time was specified, it expires after a reasonable time given the circumstances.
- Death or incapacity. The death of either the principal or the agent terminates authority immediately in most cases, and the same applies if either becomes mentally incapacitated. A notable exception is the durable power of attorney, which is specifically designed to survive the principal’s incapacity.
- Changed circumstances. If the subject matter of the agency is destroyed, business conditions change dramatically, or a new law makes the agent’s task illegal, authority terminates automatically.
One wrinkle worth knowing. Even after actual authority ends, apparent authority can linger. If a third party doesn’t know the agent’s authority was revoked, and the principal hasn’t taken steps to notify people who previously dealt with the agent, the principal can still be bound under apparent authority. A principal who terminates an agent should notify the third parties who regularly dealt with that agent. Otherwise the exposure stays open.