Key takeaways
- Banks must make many deposited funds available quickly, but funds availability is not proof a check is legitimate.
- A fake check can take weeks to bounce, and when it does, the bank takes the money back out of your account.
- Never send money back to anyone who claims they overpaid you by check; legitimate buyers and employers do not do this.
- Requests to pay by wire transfer, payment app, gift card or cryptocurrency are warning signs because those payments are hard to reverse.
- If you deposited a suspicious check, stop sending money, contact your bank, and report it to the FTC at ReportFraud.ftc.gov.
A check from someone you have never met, for more money than expected, almost always comes with a story. The story is what makes these scams work, and the Federal Trade Commission receives tens of thousands of reports about them each year. The checks often look convincing enough to fool bank employees, which is why the mistakes below matter more than the check’s appearance.
How Fake Check Scams Work in Plain English
In a fake check scam, a stranger sends you a check, sometimes worth thousands of dollars and nearly always for more than you are owed, then asks you to return part of the money. The excuse varies: taxes or fees on a prize, supplies for a new job, an accidental overpayment. You deposit the check, send real money, and later learn the check was fake.
A cashier’s check, one issued and sold by a bank, is a common prop because these checks have long been trusted and counterfeits are hard to spot. By the time the bank realizes the check is bad, the money you sent is gone.
Mistake 1: Treating the Bank’s Credit as Proof the Check Cleared
The core confusion is between funds availability and a cleared check. Under the Expedited Funds Availability Act and Regulation CC, the federal rules on deposit timing, banks generally must make funds from a deposited cashier’s check available the next business day. Many people call this the check “clearing.” It is not.
Funds availability only means you may withdraw the money; the bank has not confirmed the check is genuine. A check typically takes about 10 days to move through the clearing process, and a forged one can go undetected for weeks. When that happens, the bank undoes the deposit and takes the money back out of your account.
What to do instead: do not rely on money from a stranger’s check until your bank confirms it has fully cleared, not merely posted. Until then, withdrawals you make against it are your responsibility.
Money tip: If you sell something and the buyer insists on paying by check, the FTC suggests asking for one drawn on a local bank so you can visit a branch to verify it.
Mistake 2: Sending Back an Overpayment
Someone buying your car or furniture “accidentally” sends a check for too much and asks you to refund the balance, often by wire transfer or payment app. The FTC’s advice is blunt: never accept a check for more than your selling price, and never agree to wire money back to a buyer.
How the money leaves matters. A wire transfer is an instantaneous, non-reversible transfer of funds, so once it is sent there is little recourse. Gift cards and cryptocurrency are just as unrecoverable.
What to do instead: refuse the overpayment. A legitimate buyer will not pressure you to send money back, and an offer that is genuine now should still be genuine once the check has fully cleared.
Mistake 3: Paying Upfront for a Prize, Job or Mystery-Shopper Gig
Fake checks power a family of scams with the same shape. In the mystery-shopper version, you are “hired” and told to review a store that sells gift cards, money orders or wire transfer services, then wire part of a deposited check onward. In the personal assistant version, you buy gift cards and hand the PIN codes to a new “boss.” In the prize version, a sweepstakes sends a check and asks you to cover taxes or fees.
None of this is how legitimate opportunities work. Real sweepstakes do not charge winners to collect a prize, and honest employers do not require workers to front money from a personal account. Scammers favor wire services, payment apps, gift cards and cryptocurrency because those payments are hard to reverse.
What to do instead: treat any request to pay upfront fees, from a check you just deposited or anywhere else, as a stop sign.
Mistake 4: Ignoring the Warning Signs in the Story
The stories share tells. Urgency is one: scammers want you to act before you have time to think, so pressure to “act now” is itself a warning sign. Another is a check for more than was agreed, which the FTC calls a sure sign of a scam.
What to do instead: slow down with anyone who reaches out urgently or whom you have never met. Honest businesses give you time to decide, and you should not share personal or financial information in response to contact you did not expect.
What to Do if You Have Already Deposited the Check
Stop sending money immediately, even if the person threatens or insists. Contact your bank, explain that you believe you deposited a fake check, and ask what can be done about money still in the account. Keep records of the messages and the check.
Then report it. The Federal Trade Commission takes reports at ReportFraud.ftc.gov, and reports help agencies track these schemes and warn others. If the fallout leaves debts or damaged accounts, check your credit reports for errors; our guide to checking your credit report and disputing errors walks through the process.
Who Pays Back the Bank, and When
You do. When a deposited check proves fraudulent, the bank undoes the deposit and takes the money back out of your account, and you owe the bank the full amount if you have already used it. If your balance cannot cover that, the account can go negative and the bank may pursue the shortfall.
The order of events matters. Money you withdraw against an unverified check is money you may have to return, while money wired to a scammer rarely comes back at all. A cash buffer can absorb a shock like this; our guide to emergency fund basics explains how large one might need to be. Ask your bank how it handles returned deposits and any resulting negative balance, since account rules vary.
- How to check your credit report and dispute errors: If a scam leaves you owing the bank, review your reports and get errors fixed.
- How big should your emergency fund be?: A cash buffer can soften the blow when a deposit is reversed.
- How to automate your savings: Rebuilding after a loss is easier when saving happens on schedule.
Common questions
Q: The money from the check is in my account. Isn’t that proof it cleared?
A: No. Federal rules require banks to release most deposits on a set schedule, which is separate from the process of collecting the check. A fake check can go undetected for weeks, and when it is caught, the bank takes the money back out of your account.
Q: Why would a bank credit my account if the check is fake?
A: The rules on funds availability set when deposits must be released, not whether a check is genuine. Availability means you may withdraw the money, not that the check is real.
Q: The buyer sent too much and asked me to refund the difference. What should I do?
A: Do not accept a check for more than the selling price, and never wire money back to a buyer. If the offer is genuine, it will still stand once the check has fully cleared through your bank.
Q: Where do I report a fake check scam?
A: The Federal Trade Commission collects reports at ReportFraud.ftc.gov. Also tell your bank as soon as possible, especially if you have already sent money.
This article is for general information and education only and isn’t personal financial, tax or legal advice. Rates, fees and rules change, so check current details with the provider or an official source before making decisions.