Yes, you can sue a bank for cashing a forged check, and in most cases you will not need to. Under the Uniform Commercial Code, a bank may only charge your account for checks you actually authorized, so a check bearing a forged signature is the bank’s loss, not yours, once you report it on time.1Legal Information Institute. Uniform Commercial Code 4-401 – When Bank May Charge Customer’s Account A lawsuit becomes the answer only when the bank refuses to recredit you, misses its deadlines, or acts in bad faith.
The rule is called the “properly payable” rule. Your bank holds your signature card and is in the best position to spot a fake before releasing funds. When it pays a check you never signed, it has spent its own money. That is the foundation of any recovery, whether you get it through a phone call to the fraud department or through a judge.
The Deadlines That Decide Whether You Have a Case
Before anything else, check the calendar. The UCC imposes two reporting deadlines, and missing either one can wipe out your claim no matter how clear the forgery is.
- Report the first forged check within 30 days after your statement is made available. If the same person forges more checks on your account and you did not flag the first one in time, the bank can refuse to reimburse you for the later ones it paid before you gave notice.2Legal Information Institute. Uniform Commercial Code 4-406 – Customer’s Duty to Discover and Report Unauthorized Signature or Alteration
- Report any forgery within one year of the statement showing it. After that, you lose the right to assert the claim at all, regardless of who was careless.2Legal Information Institute. Uniform Commercial Code 4-406 – Customer’s Duty to Discover and Report Unauthorized Signature or Alteration
The 30-day rule is where most claims collapse. Someone who forges one check and gets paid almost always tries again. If you are not reviewing statements monthly, several forgeries may clear before you notice, and the bank will have a strong argument that everything after the first one is on you.
When the Bank Can Legitimately Refuse to Pay You Back
Even inside the deadlines, your own conduct can shift the loss. Two situations come up most often.
Your Carelessness Helped Make the Forgery Possible
If your failure to exercise ordinary care substantially contributed to the forgery, you cannot assert it against a bank that paid the check in good faith.3Legal Information Institute. Uniform Commercial Code 3-406 – Negligence Contributing to Forged Signature or Alteration of Instrument Common examples are leaving signed blank checks lying around, using a signature stamp without securing it, or failing to safeguard a checkbook in a shared space.
The result is not always all-or-nothing. If the bank was also careless, the loss gets split based on how much each party’s negligence contributed. That comparative-fault framework means the specific facts of your case carry real weight.
The Forger Was Your Employee
Businesses face a tougher rule. If you gave an employee responsibility over checks (authority to sign, process, prepare, or control disposition of instruments) and that employee forged an endorsement, the endorsement is treated as valid.4Legal Information Institute. Uniform Commercial Code 3-405 – Employer’s Responsibility for Fraudulent Indorsement by Employee The employer, not the bank, is expected to screen and supervise its own people. Recovery is possible only if the bank also failed to exercise ordinary care.
A Note on Forged Endorsements vs. Forged Signatures
The rules above assume someone forged your signature as the account holder. If instead you wrote a legitimate check and a thief forged the payee’s signature on the back to cash it, the payee (not you) generally holds the conversion claim against the bank that accepted the check under UCC Section 3-420.5Legal Information Institute. Uniform Commercial Code 3-420 – Conversion of Instrument You would still demand a recredit from your own bank, because the check was not properly payable, but the lawsuit structure is different.
Filing the Forgery Claim With Your Bank
Start with the bank, not a lawyer. You will be asked to complete an affidavit of forgery, a sworn statement that the signature is not yours and that no one had your authorization to sign. Each bank uses its own form, and you will need to provide the account number, check number, dollar amount, processing date, and payee.
Most banks also require a police report. Some will not open a claim without one. File it as soon as you discover the forgery, even before you have every detail, because the date you report matters for the deadlines above.
Once the affidavit and supporting documents are in, the bank opens an investigation. Investigators compare the check signature against your signature card and review where and when the check was cashed or deposited. Many banks issue a provisional credit during the review so you can access your funds; if the investigation confirms the forgery, that credit becomes permanent. Whatever happens between your bank and the bank that first accepted the check is handled through inter-bank warranty rules and does not require anything from you.
What You Can Recover Beyond the Check Amount
If the bank handles the claim properly, you get recredited and the matter ends. When it does not, the UCC allows more than just the face value of the check.
The baseline damages for a bank’s failure to use ordinary care equal the amount of the check, reduced by anything that could not have been recovered even with proper care. When bad faith is involved, damages expand to include “any other damages the party suffered as a proximate consequence.”6Legal Information Institute. Uniform Commercial Code 4-103 – Variation by Agreement; Measure of Damages; Action Constituting Ordinary Care Banks cannot use account agreements to limit liability for bad faith or for failing to exercise ordinary care.
A separate rule addresses what happens when a forgery empties your account and your legitimate checks start bouncing. Under UCC Section 4-402, the bank is liable for actual damages caused by wrongful dishonor, which can include bounced-check fees, late payment penalties, credit damage, and even an arrest or prosecution that resulted from the dishonor.7Legal Information Institute. Uniform Commercial Code 4-402 – Bank’s Liability to Customer for Wrongful Dishonor Whether a particular harm was proximately caused by the dishonor is decided case by case.
What to Do When the Bank Refuses
If the bank denies your claim and you believe the denial is wrong, work through the steps in order.
Read Your Account Agreement First
Many bank account agreements require you to resolve disputes through private arbitration rather than court. Federal law makes those arbitration provisions “valid, irrevocable, and enforceable” in contracts involving commerce.8Office of the Law Revision Counsel. 9 USC 2 – Validity, Irrevocability, and Enforcement of Agreements to Arbitrate Class action waivers often appear alongside them. If arbitration is required and you sue in court, the case will likely be dismissed.
Send a Written Demand
A formal demand letter is the usual next step whether the forum is court or arbitration. Lay out the facts, specify the amount owed, and set a deadline after which you will pursue legal action. An attorney’s letterhead adds weight but is not required.
File a CFPB Complaint
Before paying a lawyer, file a complaint with the Consumer Financial Protection Bureau. You can submit one online in about ten minutes or by calling (855) 411-2372. The CFPB forwards the complaint to the bank, which generally responds within 15 days.9Consumer Financial Protection Bureau. Submit a Complaint Complaint data is also shared with state and federal enforcement agencies. A bank that ignored your letter often responds quickly to a federal inquiry.
Small Claims or Civil Court
For smaller amounts, small claims court lets you present your case without an attorney. Dollar limits vary widely by state, generally between $2,500 and $25,000. Above your state’s cap, you would file in a higher civil court, where the process is more formal and hiring counsel becomes more practical. In either forum, the affidavit of forgery, police report, bank correspondence, and account statements you gathered during the claim form the core of your evidence.
You Have Three Years to Sue
The UCC sets a three-year statute of limitations for actions under its bank deposit and collection rules. The clock generally starts when the bank refuses to recredit your account. This is separate from the one-year reporting deadline: the one-year rule decides whether you can assert the claim at all, and the three-year rule decides how long you have to file suit after a timely claim is denied.