Authorized signatory examples include a CEO signing a vendor contract, a nonprofit treasurer approving a grant application, a payroll manager releasing routine transfers, and an adult child managing a parent’s bank account under a power of attorney. An authorized signatory is simply a person with the legal power to sign documents and create binding obligations on behalf of someone else, whether that someone is a company, a nonprofit, or another individual. Under agency law, the signatory’s signature carries the same weight as if the organization or person they represent had signed personally.1Cornell Law Institute. Agency
Who Typically Serves as an Authorized Signatory
The most visible signatories sit at the top of a company. A Chief Executive Officer or Chief Financial Officer routinely signs acquisition agreements, employment contracts, and major vendor deals. Their broad authority flows from the company’s governing documents and board resolutions, which give senior officers power to commit the organization to large financial obligations without a separate approval for every transaction.
In smaller organizations and nonprofits, a treasurer or executive director often serves as the designated signatory for tax filings, grant applications, and property leases. For day-to-day operations, companies frequently authorize specific employees to sign checks or approve electronic payments up to a set dollar limit. A payroll manager, for instance, might have authority to process routine payroll transfers but need a senior officer’s signature for anything above a threshold written into the company’s bylaws.
On the personal side, someone holding a power of attorney acts as an authorized signatory for another individual. This commonly arises when the person granting the power is traveling, seriously ill, or otherwise unable to handle their own affairs. Depending on how broadly the power is drafted, the agent can sign real estate closing documents, manage bank accounts, and handle insurance claims.
Broad Authority vs. Limited Authority
Authority can be sweeping or narrow. A general grant lets the signatory handle virtually any transaction on the entity’s behalf. A limited grant restricts the person to specific tasks, such as signing checks below a certain amount or executing contracts only within a particular business unit. Most organizations choose limited authority for anyone below the C-suite, because it reduces exposure if something goes wrong.
For corporations, this designation typically happens through a formal board resolution that names the individual, specifies their title, describes what documents or transactions they can sign, and states when the authority takes effect. The corporate secretary or another officer, not the person receiving the authority, signs the resolution to certify it.
How the Signature Should Be Formatted
The way a signatory physically signs a document matters more than most people realize. Signing on behalf of a company without clearly identifying that fact risks being treated as personally responsible for the obligations in the contract. The standard approach uses a signature block that names the entity first, then the individual’s signature and title.
A typical corporate signature block contains four elements:
- The entity’s legal name at the top (for example, Acme, Inc.)
- A “By:” line with the signatory’s handwritten signature
- A “Name:” line with the signatory’s printed name
- An “Its:” or “Title:” line stating the signatory’s role, such as “President” or “CEO”
The “By:” line signals that the person is signing in a representative capacity, not as an individual. Skipping this format or signing without the entity name above the signature blurs the line between personal and corporate liability, and can bind the wrong party or expose a corporate officer to personal responsibility for the entity’s debts.
For a limited liability company, the format is similar but reflects the LLC’s management structure. An LLC managed by its members would show the company name, a “By:” line for the signature, and an “Its:” line reading something like “Managing Member” or “Co-Managing Member.” The goal is identical: make clear that the human signing is acting for the entity, not themselves.
Documents That Prove Someone Has Signing Authority
Third parties usually want proof that a signatory actually has the power they claim. The paperwork varies with the type of entity and transaction, but a few documents come up again and again.
- A government-issued identification, such as a passport or driver’s license, that verifies the signatory’s identity. Federal banking regulations require the specific identifying information from the document to be recorded, not just a note that the person is “known.”2eCFR. 31 CFR 1010.312 – Identification Required
- A certified copy of the board resolution authorizing the specific individual to act. Banks, title companies, and contract counterparties commonly request this.
- A certificate of incumbency signed by the corporate secretary, confirming the names, titles, and terms of the company’s current officers and directors. It typically includes sample signatures, the corporate seal, and whether each person was elected or appointed.
- A bank signature card that serves as the reference specimen for verifying future transactions. For business accounts, the card may also specify how many signatures are required above a particular dollar amount.
- For individuals acting under a power of attorney, the original or a certified copy of the POA. Real estate transactions usually require the POA to be recorded with the county, and banks want to review it before granting account access.
Accuracy matters. The legal name of the entity on the authorization paperwork must match the name on its formation documents exactly. A mismatch between “Acme LLC” on a board resolution and “Acme, L.L.C.” on the articles of organization can delay or derail a transaction.
Personal Liability an Authorized Signatory Can Face
Signing on behalf of someone else carries real legal exposure. The biggest risk comes from acting outside the scope of your authority, but there are other traps worth understanding before agreeing to serve.
Acting Beyond Your Authority
An agent who signs a contract without actual authority breaches what the law calls an implied warranty of authority. The practical result: the agent becomes personally liable to the third party for any damages caused by the unauthorized agreement. The principal can choose to ratify the deal after the fact, which would let the agent off the hook, but there is no guarantee of that.
The flip side is a doctrine called apparent authority, which can bind the principal even when the signatory overstepped. If the principal’s own conduct gave a third party a reasonable basis to believe the signatory had permission, the principal is stuck with the deal.1Cornell Law Institute. Agency Organizations that fail to communicate the limits of a signatory’s power to outside parties shoulder the risk when that signatory goes beyond what was actually authorized.
Payroll Tax Exposure
Anyone with authority to sign business checks or direct the payment of company funds can be classified as a “responsible person” for federal payroll tax purposes. If the business fails to collect and pay over employment taxes, the IRS can assess a Trust Fund Recovery Penalty against the responsible individual personally, in an amount equal to the full unpaid tax. The penalty is not limited to owners or executives. A signatory on the company’s bank account who had the authority to decide which creditors got paid can be held liable, even if they were not involved in the decision to skip the tax payment. Unpaid volunteer board members of tax-exempt organizations get a narrow exception, but only if they served in an honorary capacity and had no actual knowledge of the failure.3Office of the Law Revision Counsel. 26 USC 6672 – Failure to Collect and Pay Over Tax
Sloppy Signature Formatting
Failing to clearly identify yourself as signing in a representative capacity can result in personal liability for the entity’s obligations. This trap is especially common with sole proprietors and single-member LLCs, where the line between the person and the entity is already thin. Always use the full “By / Name / Title” format, and make sure the entity’s legal name appears above your signature line.
How Signing Authority Ends
Signatory authority does not last forever, and organizations that forget to revoke it when circumstances change create serious exposure. The common triggers for termination:
- Voluntary revocation. The principal or organization can revoke authority at any time. For a power of attorney, the principal delivers a signed, dated revocation to the agent. For a corporate signatory, the board passes a new resolution removing the individual’s authority, and the company notifies banks and other relevant third parties.
- Death of the principal. A power of attorney terminates automatically when the principal dies. Any later attempt by the agent to exercise authority under the document is unauthorized. Management of the deceased person’s assets shifts to the executor or personal representative.
- Incapacity. A standard (non-durable) power of attorney terminates if the principal becomes incapacitated. A durable power of attorney is specifically designed to survive incapacity and remains effective.
- Resignation or departure. When a corporate signatory leaves, their authority should be revoked immediately through a board resolution. Banks and financial institutions need to be notified and the signature card updated.
- Divorce or separation. In many states, a power of attorney granted to a spouse terminates automatically when a divorce or legal separation proceeding is filed.
One detail catches people off guard. Termination is not effective against a third party who acts in good faith without knowing the authority has been revoked. If your company fires a signatory on Monday but does not notify the bank until Thursday, a check that person signs on Wednesday may still be binding on the company. Prompt notification to every institution that relied on the signatory’s authority is the only way to cut off the risk.