On a bank notice or account statement, “altered/fictitious” is the return reason code a paying bank uses when it refuses to honor a check because the document itself looked wrong. An altered or fictitious check is one of two things: a real check somebody tampered with after it was written, or a fake check that never had a legitimate account behind it. Banks group both under the same code because a chemically washed check and a well-made counterfeit can be hard to tell apart in the moment.
This is not the same as a check bouncing for insufficient funds or a closed account. Those are real checks that can’t be paid. An altered/fictitious return means the check itself is the problem.
Altered Checks vs. Fictitious Checks
An altered check starts life as a legitimate instrument. Someone then changes it without authorization — usually the payee name, the dollar amount, or both. A $100 check gains a zero and becomes $1,000. The payee line gets rewritten so the money goes to a stranger.
The most common alteration method is check washing. Thieves pull checks out of mailboxes and use chemicals like acetone or bleach to dissolve the ink. Once the original details are gone, they fill in a new payee and amount on paper that still carries the real security features and signature.1United States Postal Inspection Service. Check Washing A washed check can pass many of the visual tests that catch cruder fakes.
A fictitious check is fabricated from nothing. No one with authority over a real account ever wrote it. Fraudsters print these on consumer printers, sometimes copying real bank logos and pairing legitimate routing numbers with account numbers that don’t exist or belong to someone else. Quality ranges from obvious to convincing, but the substance is the same: no account holder, no authorized signature, no funds behind it.
Why “Funds Available” Does Not Mean the Check Is Good
This is the trap that catches most people on the receiving end. Federal law requires your bank to make deposited funds available within a set number of business days, usually one to five depending on the check type and your account history.2Federal Reserve Board. Regulation CC (Availability of Funds and Collection of Checks) Available is not the same as cleared. A check can take weeks to travel through the banking system before it comes back as fraudulent, and during that window the money sits in your account looking real.
When the check does bounce, your bank reverses the deposit and pulls the full amount out of your account.3Legal Information Institute. UCC 4-214 – Right of Charge-Back or Refund If you already spent or wired those funds, your balance goes negative and you owe the bank. The Federal Trade Commission puts it plainly: “Fake checks can take weeks to be discovered and untangled. By that time, the scammer has any money you sent, and you’re stuck paying the money back to the bank.”4Federal Trade Commission. How To Spot, Avoid, and Report Fake Check Scams
The Scams That Deliver These Checks
Most people don’t run into fraudulent checks by accident. They arrive inside a scam engineered to make you send real money before the fake check comes back. Two patterns dominate.
In overpayment scams, a “buyer” sends you a check for more than the agreed price on something you’re selling and asks you to wire back the difference. The check is fictitious. When it bounces, the money you wired is gone. In prize and sweepstakes scams, a letter tells you you’ve won, encloses a check, and asks you to send back a portion for “taxes” or “processing fees.” Same result.4Federal Trade Commission. How To Spot, Avoid, and Report Fake Check Scams
The tell is always urgency, and the pattern is always the same: a stranger sends you a check and asks you to send money back for any reason at all.
Who Pays When an Altered or Fictitious Check Goes Through
The rules split depending on which side of the check you’re on.
If your bank pays an altered check drawn on your account, the bank can only charge you for the original amount you wrote the check for. If you wrote a $200 check and someone altered it to $2,000, your bank can debit $200. The remaining $1,800 falls on the bank that took the altered check or on banks further down the collection chain.5Legal Information Institute. UCC 4-401 – When Bank May Charge Customer’s Account
That protection has limits. If you were careless — leaving signed blank checks out, ignoring statements for months while a fraudster kept cashing altered checks — the bank can argue you contributed to the loss, and the loss gets split based on who was more responsible.6Legal Information Institute. UCC 4-406 – Customer’s Duty to Discover and Report Unauthorized Signature or Alteration
If you’re the one who deposited a fictitious check, the rule is harsher. Your bank has the right to reverse the provisional credit and pull the full amount back, even if you’ve already spent it.3Legal Information Institute. UCC 4-214 – Right of Charge-Back or Refund Your bank may also charge a returned-item fee, typically $20 to $40.
Deadlines for Reporting an Altered Check
If someone altered a check drawn on your account, the clock matters. Under the Uniform Commercial Code, you have a duty to review your statements promptly and report any unauthorized transactions. Delay long enough that the bank suffers a loss because of it, and you can lose the right to be reimbursed. There is also a hard outside limit: if you do not report an alteration within one year of receiving the statement showing it, you are barred from making a claim against the bank at all, regardless of the circumstances.6Legal Information Institute. UCC 4-406 – Customer’s Duty to Discover and Report Unauthorized Signature or Alteration
How to Spot a Fraudulent Check Before You Deposit It
No single test catches every fake, but looking at a few features together usually gives you a read.
- Paper quality. Real checks use heavy, textured paper. Flimsy or unusually smooth stock is a red flag.
- Watermarks and microprinting. Real checks include watermarks visible against light and microprinting that looks like a solid line but resolves into tiny words under magnification. Counterfeits often reproduce microprinting as a blurred line or a row of dots.7Fiscal Service, U.S. Department of the Treasury. U.S. Treasury Check Security Features
- The MICR line. The characters along the bottom of a real check are printed in magnetic ink that looks dull and lies flat. Shiny or raised characters usually mean the check came off a standard printer.8Office of the Comptroller of the Currency. Check Fraud: A Guide to Avoiding Losses
- Signs of washing. Discoloration, smudging, mismatched ink, disturbed paper texture, faint traces of erased writing, or handwriting that changes style between fields.8Office of the Comptroller of the Currency. Check Fraud: A Guide to Avoiding Losses
- Routing number mismatches. If the routing number doesn’t match the bank named on the check, or the logo or address looks slightly wrong, treat it as suspicious.
What to Do If You Already Have a Suspicious Check
Do not deposit it. Do not send any money back to the sender under any story — overpayment, taxes, fees, shipping. Once you deposit a fraudulent check and withdraw funds, you are responsible for the whole amount when the reversal comes.
Call your bank directly. They can attempt to verify the check and tell you how to proceed. If the check arrived as part of a scam, report it to the Federal Trade Commission at reportfraud.ftc.gov.9Federal Trade Commission. ReportFraud.ftc.gov If the internet was involved, file with the FBI’s Internet Crime Complaint Center (IC3). If the check was stolen from the mail, the U.S. Postal Inspection Service handles those cases.
Preventing It Going Forward
If you still write checks, use a gel pen with pigment-based ink. Pigment ink soaks into the paper fibers and resists the solvents used in check washing. It won’t stop someone from fabricating a check with your account information, but it makes altering the checks you actually write much harder.
Mail is where most checks get stolen. Drop outgoing checks at the post office counter or in a secure USPS collection box instead of leaving them in your home mailbox with the flag up. Pick up incoming mail promptly.10HelpWithMyBank.gov. What Is Check Washing?
Businesses that issue checks in volume should ask their bank about Positive Pay. You upload a list of every check you issue — number, amount, payee — and the bank matches presented checks against your list. Anything that doesn’t match gets flagged for your approval before it pays.
And read your statements. Every month. The reporting deadlines above only run if you actually look.
Criminal Exposure for Passing These Checks
For the person who alters or fabricates a check, the federal exposure is heavy and layered. Creating, possessing, or passing a fictitious document made to look like a real financial instrument is a Class B felony carrying up to 25 years in prison under 18 U.S.C. § 514.11Office of the Law Revision Counsel. 18 USC 514 – Fictitious Obligations Counterfeiting checks drawn on state entities, corporations, or private parties carries up to 10 years under § 513.12Office of the Law Revision Counsel. 18 USC 513 – Securities of the States and Private Entities Executing a scheme to defraud a financial institution is bank fraud under § 1344, punishable by up to 30 years and $1,000,000 in fines.13Office of the Law Revision Counsel. 18 USC 1344 – Bank Fraud Schemes that use the postal service pick up mail fraud charges under § 1341, and when a financial institution is affected the mail fraud maximum also runs to 30 years and $1,000,000.14Office of the Law Revision Counsel. 18 USC 1341 – Frauds and Swindles State forgery and theft charges typically stack on top, scaling with the dollar amount involved.