You can sue a bank for cashing a forged check, and in most cases you won’t have to, because the Uniform Commercial Code requires the bank to put the money back once you report the forgery on time. UCC Section 4-401 lets a bank charge your account only for items that are “properly payable,” meaning items you actually authorized.1Legal Information Institute. Uniform Commercial Code 4-401 – When Bank May Charge Customer’s Account A check bearing a forged drawer’s signature was never your instruction to pay, so the bank spent its own money, not yours. If it refuses to recredit you, that refusal is what you sue over.
Two things decide whether your claim survives: how quickly you reported the forgery, and whether your own conduct helped make it possible.
The Reporting Deadlines That Decide Your Claim
The UCC gives you two windows, and missing either can move the loss from the bank to you.
- Report the first forgery within 30 days after your statement is made available. If the same wrongdoer forges more checks and you didn’t 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 after the statement showing it is made available. Miss that, and you lose the right to assert the claim at all, no matter how careful or careless anyone was.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’re not reading your statements each month, several forgeries can clear before you notice, and the bank has a clean argument that the later ones are on you.
When the Bank Can Legally Deny You
Your Own Negligence Contributed
If your failure to exercise ordinary care “substantially contributed” to the forgery, you can’t 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 Leaving signed blank checks lying around, using an unsecured signature stamp, or leaving a checkbook exposed in a shared space are typical examples.
It’s not always all-or-nothing. If the bank was also careless in paying the check, the loss gets split between you based on how much each side’s conduct contributed. The bank must prove you were negligent; you must prove the bank was.3Legal Information Institute. Uniform Commercial Code 3-406 – Negligence Contributing to Forged Signature or Alteration of Instrument
An Employee Forged the Check
Businesses face a tougher rule. Under UCC Section 3-405, if you entrusted an employee with authority to sign, process, prepare, or control checks, 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 is treated as the party best positioned to screen and supervise its people. Recovery from the bank is possible only if the bank also failed to exercise ordinary care and that failure contributed to the loss.
A Note on Forged Endorsements
The rules above cover a forged drawer’s signature — someone signing your name to draw money out of your account. A different situation is a check you wrote to someone else, intercepted by a thief who forged the payee’s endorsement to cash it. UCC Section 3-420 treats that as conversion, and the conversion claim belongs to the payee whose endorsement was forged, not to you as the issuer.5Legal Information Institute. Uniform Commercial Code 3-420 – Conversion of Instrument Your account still shouldn’t have been charged, because the check was never properly delivered, so you’d demand a recredit from your bank, and your bank would then chase the depositary bank through its warranty rights.
Filing the Claim Before You Sue
Suing skips the fastest route to your money. The claims process is short, and most banks resolve legitimate forgery claims without litigation.
Start by asking your bank for an affidavit of forgery. It’s a sworn statement that the signature isn’t yours and that you didn’t authorize anyone else to sign. You’ll need your account number, the check number, the amount, the date it cleared, and the payee’s name. Then file a police report. Many banks won’t process a claim without one, and the report date matters for the deadlines above, so file even before you’ve gathered every detail.
After you submit the affidavit, the bank compares the forged signature against the signature card on file and reviews where and when the check was cashed or deposited. Many banks issue a provisional credit during the investigation; if the forgery is confirmed, the credit becomes permanent.
What You Can Recover
The baseline is the amount of the check. When a bank fails to exercise ordinary care in handling the item, damages are the check amount reduced by anything that couldn’t have been recovered even with proper care. If the bank acted in bad faith, damages expand to “any other damages the party suffered as a proximate consequence,” and the bank can’t use its account agreement to disclaim liability for bad faith or lack of ordinary care.6Legal Information Institute. Uniform Commercial Code 4-103 – Variation by Agreement; Measure of Damages; Action Constituting Ordinary Care
There’s a separate remedy when a forgery empties your account and legitimate checks then bounce. Under UCC Section 4-402, a 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 any specific harm was proximately caused is decided case by case.
Suing the Bank if It Refuses to Pay
Check Your Account Agreement First
Many bank account agreements require arbitration instead of a courtroom lawsuit. Federal law makes written arbitration provisions in contracts involving commerce “valid, irrevocable, and enforceable.”8Office of the Law Revision Counsel. 9 USC 2 – Validity, Irrevocability, and Enforcement of Agreements to Arbitrate These clauses often waive class actions too. Read the agreement before drafting a complaint, because filing in court when arbitration is required will likely get your case dismissed.
Send a Demand Letter
Whether you end up in court or arbitration, a written demand is the usual first move. Lay out the facts, state the amount owed, and give a deadline for payment before you file. An attorney-drafted letter carries more weight, but it isn’t required.
File a CFPB Complaint
Before hiring counsel, consider filing 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 your complaint to the bank, which generally must respond within 15 days, and the agency shares complaint data with state and federal enforcement bodies.9Consumer Financial Protection Bureau. Submit a Complaint A bank that ignored your letter often responds when a federal regulator is asking.
Small Claims or Civil Court
For smaller disputes, small claims court lets you present the case without a lawyer. Dollar limits vary by state, generally from $2,500 to $25,000. Above your state’s cap, you’d file in a higher civil court, where the process is more formal and legal representation becomes more practical. The evidence you built during the claims process — the affidavit, the police report, bank correspondence, and account statements — is the backbone of your case in either forum.
How Long You Have to File
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. Don’t confuse this with the one-year reporting deadline: the one-year rule decides whether you can assert the forgery claim at all, and the three-year window decides how long you have to sue after a timely claim is denied.