An authorized signer on a business account is a person the company formally designates to transact on its bank account without giving them any ownership of the funds. They can write checks, move money, and see account activity because the business granted that permission and the bank accepted the paperwork. Nothing more. That narrow source of authority is what shapes both what a signer can do day to day and where they can end up personally on the hook.
What a Signer Can Actually Do
A signer’s power comes from two documents working together: the company’s internal resolution and the bank’s account agreement. Between them, they define which accounts the signer can touch and which transactions they can run. Typical permissions cover writing checks, initiating ACH transfers, sending domestic or international wires, making deposits, and viewing balances and transaction history.
The wording on the account agreement matters. When it requires “joint” or “both” signatures, a single signer cannot act alone. When it says “any” or “either,” each signer can transact independently. Businesses use that flexibility to match access to role.
The hard limit is ownership. A signer has no legal interest in the account funds. They cannot pledge the account as collateral, add or remove other signers, or close the account unless the resolution specifically grants that power. And the business can revoke signer authority at any time, for any reason.
Signer, Account Owner, and Beneficial Owner Are Not the Same
These three roles get mixed up constantly, and banks and federal regulators treat each differently. The account owner holds a legal interest in the funds. A signer only has permission to move them. A beneficial owner is a separate regulatory concept.
Under the Customer Due Diligence rule, a beneficial owner is either someone who directly or indirectly owns 25 percent or more of the company’s equity, or a single individual with significant responsibility to control, manage, or direct the company, such as a CEO, CFO, or president.1eCFR. 31 CFR 1010.230 – Beneficial Ownership Requirements for Legal Entity Customers Banks must identify and verify every beneficial owner when a business opens an account.2FinCEN.gov. Information on Complying with the Customer Due Diligence Final Rule
A signer may or may not be a beneficial owner. A bookkeeper with check-signing authority owns no equity and holds no executive role, so they’re a signer only. A founder who also signs checks is both. The bank gathers documentation for each role separately because the purposes differ: beneficial ownership rules track who profits from the account; signer documentation tracks who can access it.
How a Business Adds a Signer
Adding a signer takes two steps: an internal authorization and a bank submission. Skip the internal step and the bank will reject the request.
The business formally authorizes the new signer through its governing body. For a corporation, that’s a board resolution recorded in the minutes. For an LLC, it’s usually an amendment to the operating agreement or a manager resolution. The resolution should name the individual, list which accounts they can access, and describe the transactions they may run. A certified copy of the resolution is the primary document the bank will require. Sole proprietorships skip the governance step because there’s no board or operating agreement; the owner contacts the bank directly.
At the bank, the new signer fills out a signature card that captures their legal signature for verifying future paper transactions. The name on the card must exactly match their government-issued ID. Any mismatch between the resolution, the ID, and the card will stall the process. Banks also operate under federal Customer Identification Program rules and must collect the signer’s name, date of birth, address, and a taxpayer identification number. Non-U.S. persons can serve as signers; the rule allows a passport number with country of issuance, an alien ID card number, or another government-issued document showing nationality or residence with a photograph in place of an SSN.3eCFR. 31 CFR 1020.220 – Customer Identification Program
Permission Levels and Transaction Controls
Not every signer needs the same access. The resolution and account agreement should build layers that match each person’s actual responsibilities. Common tiers include:
- View-only access, where the signer sees balances and history for reconciliation but cannot initiate payments.
- Limited transactional access, capped at a dollar amount for routine payments like vendor invoices and payroll.
- Full transactional access, with no dollar caps, usually held by senior officers.
Many businesses add a dual-signature requirement above a set threshold, say any payment over $10,000. That prevents any one person from unilaterally moving large sums, which is where most internal fraud happens.
One critical point: internal limits only bind the bank if the bank knows about them. A dual-signature rule written into a board resolution but never reflected on the signature card is unenforceable against the bank. If a signer walks in and writes a check for $50,000 and the card doesn’t require a second signature at that amount, the bank will process it, and the business will own the loss.
When a Signer Is Personally Liable
The default rule favors the signer. The business bears liability for whatever a signer does within their apparent authority, and overdraft fees and negative balances land on the business entity, not the individual, unless the account agreement says otherwise. But several situations can pull a signer into personal exposure, and some of them catch people completely off guard.
Misusing Funds
An authorized signer operates under a fiduciary duty to the business: act in good faith, put the company’s interests first, and stay within the scope of the authority granted. Using company money for personal expenses, routing payments to unauthorized accounts, or transacting outside the resolution breaches that duty.
The consequences run both civil and criminal. The business can sue for the full amount of any losses, seek a court order requiring the return of misused assets, and unwind contracts made during the breach. Deliberate fraud or theft can bring criminal charges, fines, and imprisonment.
The Trust Fund Recovery Penalty
This is the exposure most signers never see coming. Federal law lets the IRS assess a penalty equal to 100 percent of unpaid payroll taxes against any individual who was responsible for collecting or paying those taxes and willfully failed to do so.4Office of the Law Revision Counsel. 26 USC 6672 – Failure to Collect and Pay Over Tax
A “responsible person” is anyone with the duty and power to direct the disbursement of company funds. The IRS looks at whether the individual exercised independent judgment over the company’s financial affairs, not at their job title.5Internal Revenue Service. Employment Taxes and the Trust Fund Recovery Penalty A signer who decides which bills get paid and which don’t fits the definition. A signer who processes payments as directed by a supervisor does not.
The willfulness bar is lower than most people expect. You don’t have to intend to cheat the IRS. If you knew the payroll taxes were owed and used available funds to pay other creditors first, that’s enough.5Internal Revenue Service. Employment Taxes and the Trust Fund Recovery Penalty Once the IRS asserts the penalty, it can file federal tax liens and levy personal assets. If you’re going to be a signer with genuine decision-making power over a company’s finances, know that payroll tax exposure can follow you personally.
Business Credit Cards
When the business issues a company card to a signer, the liability structure depends on the card agreement. Corporate liability puts all charges on the business. Individual or joint liability shares the balance with the signer and often requires a personal guarantee, and missed payments hit the signer’s personal credit. Read the cardholder agreement before accepting a company card.
Removing a Signer
Ending signer authority is more urgent than granting it. Every day of delay is a day the person still has full access to the account.
The company passes a new resolution explicitly revoking the individual’s authority and delivers a certified copy to the bank right away. In person or by expedited delivery, not regular mail. Until the bank receives and processes the revocation, transactions the former signer initiates still look properly payable from the bank’s perspective, and the business bears them.
A stop-payment order on a specific item can buy time while the revocation is processed. An oral stop-payment order lapses after 14 calendar days unless confirmed in writing, and a written order expires after six months unless renewed.6Legal Information Institute. UCC 4-403 – Customer’s Right to Stop Payment It is not a substitute for full revocation. The business should also change online banking credentials, deactivate any debit cards the former signer held, and update standing ACH authorizations that reference their access.
When the Owner Dies or the Business Ends
For a sole proprietorship, a signer’s authority generally ends when the account owner dies. The signer has no legal right to the funds and cannot keep transacting. The estate takes over.
For a corporation or LLC, the business is a separate legal entity, so the death of one owner does not automatically dissolve the company or terminate existing signer authorizations. Remaining members, directors, or whoever the governing documents designate handle changes to account access. If the entity itself dissolves, all signer authority ends with it. A company that relies on a single owner without a succession plan can leave its signers in a gray zone where they still have technical bank access but no legitimate authority to use it, which is why the operating agreement or bylaws should spell succession out.