An authorized agent is a person or entity legally empowered to act on behalf of someone else, called the principal. When the agent acts within the scope of that authority, their words and signatures bind the principal as if the principal had acted directly.1Legal Information Institute. Agency The relationship shows up almost everywhere: a daughter paying her mother’s bills under a power of attorney, a CEO signing a supply contract, a listing agent negotiating a home sale, a lawyer entering a plea for a client. The rules that govern these arrangements, known collectively as agency law, decide when the principal is on the hook and when the agent is.
How Someone Becomes an Authorized Agent
The clearest path to agency is an explicit grant of authority — a document or formal act spelling out what the agent can and cannot do. Three mechanisms do most of the work.
A power of attorney is a legal document in which the principal designates someone to handle financial affairs, healthcare decisions, or other defined tasks. It can be narrow (authority to close a single real estate deal) or broad (authority over virtually all financial decisions).2Consumer Financial Protection Bureau. What Is a Power of Attorney (POA)? Most states require notarization or witness signatures, and requirements vary, so checking local rules before relying on a power of attorney matters.
A corporate resolution is a formal decision by a company’s board authorizing a specific officer or employee to act for the company — opening bank accounts, signing contracts, transferring securities.
A written agreement can create agency by defining the agent’s role, scope, and obligations. Employment contracts and independent contractor agreements often do this work.
Authority That Isn’t Written Down
Not every grant of authority sits on paper. Two unwritten forms come up constantly, and the difference matters.
Implied Authority
Implied authority covers actions that aren’t explicitly stated but are reasonably necessary to perform the agent’s assigned duties.3Legal Information Institute. Implied Authority If a principal asks an agent to take a car to the mechanic, the agent has implied authority to drive it there. A purchasing manager hired to buy supplies has implied authority to negotiate prices and arrange delivery. Nobody writes those details down, and the law doesn’t require it.
Apparent Authority
Apparent authority is different. It doesn’t depend on what the principal told the agent at all. It arises when the principal’s own conduct leads a third party to reasonably believe the agent has authority, even if no actual authority was granted.4Legal Information Institute. Apparent Authority Give an employee the title “Vice President of Sales” and let that person meet with vendors, and a vendor can reasonably assume the VP has authority to commit the company to purchase agreements. The company is bound even if an internal policy capped the VP’s actual purchasing authority, because the company created the impression.
A principal can even be bound by an agent’s act made with apparent authority after explicitly telling the agent not to do that act.1Legal Information Institute. Agency That is one of the most underappreciated risks in agency law, and it’s why businesses should be deliberate about titles, access, and public-facing roles.
Durable vs. Non-Durable Power of Attorney
Because powers of attorney come up so often, one distinction deserves its own attention. A standard, non-durable power of attorney terminates automatically if the principal becomes mentally incapacitated. That makes it useful for a one-off task like signing paperwork while you’re traveling, but useless for the scenario most people actually need it for: having someone manage affairs when the principal can no longer do so.
A durable power of attorney remains effective even after the principal loses the ability to make or communicate decisions.2Consumer Financial Protection Bureau. What Is a Power of Attorney (POA)? The word “durable” refers specifically to survival through incapacity. A financial durable power of attorney is a standard estate-planning tool, letting a trusted person pay bills, manage investments, and handle banking if the principal develops dementia or suffers a serious injury. A healthcare power of attorney authorizes an agent to make medical decisions when the principal cannot, and in many states, that authority can extend to organ donation and disposition of remains.
Without a durable version in place, a family facing a sudden incapacity may need to petition a court for guardianship or conservatorship. That is slower, more expensive, and more intrusive than a document signed while the principal was competent.
What an Authorized Agent Owes the Principal
An agency relationship is a fiduciary relationship, meaning the agent must put the principal’s interests first.5Legal Information Institute. Fiduciary Relationship This is not a best practice. It is a legal obligation backed by personal liability. Three core duties define it.
Loyalty. The agent must act in the principal’s best interest, not their own. Self-dealing, secret profits, and undisclosed conflicts of interest all violate this duty. A real estate agent who steers a client toward a property because the agent earns a higher commission has breached the duty of loyalty.6Legal Information Institute. Duty of Loyalty
Care. The agent must act with reasonable skill and diligence. A financial agent who ignores obvious risks or skips basic research before making investment decisions for the principal falls short.
Obedience. The agent must follow the principal’s lawful instructions and stay within the scope of actual authority. An agent who disagrees can resign, but can’t substitute their own judgment while still acting as agent.
These duties apply whether the relationship is formal or informal, paid or unpaid. An agent who breaches a fiduciary duty can face personal liability, be forced to return any profits gained through the breach, and lose compensation owed under the agreement.
What Happens When an Agent Exceeds Their Authority
When an agent acts outside the scope of actual authority, the default rule is simple: the principal is not bound. A third party who contracts with an agent who had no authority to make the deal generally cannot enforce it against the principal.1Legal Information Institute. Agency
The agent, though, doesn’t walk away clean. An agent who claims authority they don’t actually have is personally liable to the third party. By holding themselves out as authorized, they implicitly guaranteed the power to bind the principal. When that turns out to be false, the third party’s remedy runs against the agent directly.
Two exceptions soften the rule. Under apparent authority, if the principal’s own conduct created a reasonable belief that the agent was authorized, the principal is bound regardless of internal limits.4Legal Information Institute. Apparent Authority Under ratification, a principal who learns what the agent did can choose to adopt the unauthorized act. Ratification must happen before the third party withdraws, and the principal must have full knowledge of the material facts.
Common Types of Authorized Agents
Agency shows up across almost every area of law and business. A few examples illustrate the range.
Corporate Officers and Employees
A corporation can only act through human beings, so agency law is the backbone of corporate operations. Officers like CEOs, CFOs, and general counsel are agents of the corporation. Assigning someone a title conventionally held by a corporate officer creates apparent authority for that person to do things normally associated with the role, which is why companies should be careful about handing out executive titles as honorific rewards.7Legal Information Institute. Apparent Authority – Section: Power of Position Rank-and-file employees also act as agents within the scope of their jobs, which is why an employer can be liable for an employee’s on-the-job conduct.
Real Estate Agents
A buyer’s agent represents the buyer. A seller’s or listing agent represents the seller. Each owes fiduciary duties to the client who hired them. The relationship is typically created by a signed agreement — a listing contract on the seller side, a buyer representation agreement on the buyer side.
Attorneys
Lawyers are agents of their clients. When an attorney negotiates a settlement, files a motion, or enters a plea, they act on the client’s behalf under agency principles. The client-principal keeps the right to make key decisions, such as whether to accept a settlement, while the attorney-agent handles strategy and execution within the scope of the representation.
Registered Agents for Business Entities
Every state requires corporations, LLCs, limited partnerships, and similar entities to designate a registered agent, sometimes called an agent for service of process, in the state where they’re formed or registered to do business.8Legal Information Institute. Agent for Service of Process The job is narrow but essential: receive legal documents, lawsuits, and official government correspondence for the business. A registered agent is not a general business agent and has no authority to enter contracts or make business decisions. Many businesses hire professional services for this role.
Tax Representatives
The IRS has its own rules about who can act as an authorized agent on tax matters. To represent a taxpayer before the IRS, the representative generally must be an attorney or CPA licensed in their state, an enrolled agent, an enrolled retirement plan agent, or an enrolled actuary.9Internal Revenue Service. Frequently Asked Questions Unlicensed individuals can represent taxpayers in limited circumstances, but only in connection with returns they personally prepared and signed. The taxpayer authorizes representation by filing IRS Form 2848. Authorizing someone to represent you before the IRS does not relieve you of your own tax obligations. If your representative makes a mistake or misses a deadline, you remain on the hook.10Internal Revenue Service. Instructions for Form 2848
How Agency Ends
Authority doesn’t last forever, and knowing when it terminates matters as much as knowing how it’s created. Authority can end through:
- Revocation by the principal. A principal can generally revoke an agent’s authority at any time by communicating the revocation to the agent.
- Renunciation by the agent. The agent can quit. Walking away might create liability for breach of contract if the agent agreed to serve for a set period, but it ends the authority.
- Completion of the task. If the agent was authorized to do one specific thing, the authority ends when that task is done.
- Death or incapacity of the principal. A non-durable power of attorney terminates automatically on the principal’s death or incapacity. A durable power survives incapacity but still terminates at death.
- Death or incapacity of the agent. An agent who dies or becomes incapacitated can no longer act.
- Expiration. Many grants of authority have an end date. When the date passes, so does the authority.
The tricky part is the gap between the termination event and the moment third parties learn about it. If an agent’s authority has been revoked but a third party doesn’t know, the principal may still be bound under apparent authority. Principals should notify known third parties whenever they revoke an agent’s authority, or lingering apparent authority can create obligations the principal never intended.
How to Verify Someone’s Authority
If someone claims to be acting on behalf of a principal, trusting that claim without checking is a gamble, especially for high-stakes transactions. A few steps protect you.
Ask for documentation. Request the power of attorney, corporate resolution, or written agency agreement that grants authority. Read it. Check whether the specific action falls within the scope and confirm the document hasn’t expired.
Contact the principal directly. A phone call or email to the principal confirming the agent’s identity and scope is the most reliable safeguard. A legitimate agent won’t object.
Check public records. For registered agents of business entities, state business registries, typically run by the Secretary of State, list the designated agent’s name and address. Corporate filings can also confirm which officers are authorized to act for a company.8Legal Information Institute. Agent for Service of Process
Verify identity. Confirm the person in front of you is the person named in the authorization document. For significant transactions, government-issued photo identification is reasonable and expected.
If you contract with an unauthorized agent and no apparent authority or ratification applies, your only remedy may be a personal claim against the agent, who may lack the resources to make you whole. Ten minutes of verification up front can save months of litigation later.