Fake Cashier’s Check and Overpayment Scams: Protect Your Bank Balance

Recognize the transaction before the check reaches your bank

The common setup is a sale, rental deposit, remote job, childcare booking or prize. A stranger sends a check for more than the agreed amount and requests that the excess go to a mover, courier, supplier or supposed refund destination. The check can carry a genuine bank name, realistic routing number and convincing security printing. None of those visual features proves the check was issued by that bank. A request to forward money before you have independently verified the underlying transaction is the central warning sign, not a particular check color or font.

Consider a $1,200 used-equipment sale. The buyer mails a $3,200 cashier’s check and asks you to wire $2,000 to a shipping service. If you send the difference, the money leaves through a separate transaction that is not automatically reversible when the check later fails. Your bank can deduct the $3,200 credit, potentially leaving your account overdrawn. The apparent $2,000 surplus was never a profit or a safe escrow balance. Refuse the overpayment arrangement and do not release the goods solely because the account displays a higher balance.

Separate deposit availability from actual payment

Banks generally must follow funds-availability requirements for eligible checks, but those rules govern when you can withdraw a provisional credit, not a guarantee that an instrument is authentic. Counterfeit or altered checks may be discovered only after the deposit has appeared to clear in the app. A teller’s assurance that funds are available describes the account status at that moment; it does not convert an untrusted payment into irrevocable proceeds. A bank may reverse the deposit and charge applicable fees according to its agreement and the governing law.

Ask three specific questions: Has the bank merely made funds available? Has the paying bank actually honored the item? Does the bank offer any check-verification process before deposit? Even a positive response to the second question should be assessed against the risk of later fraud claims. For an unknown buyer, prefer payment methods appropriate to an in-person transaction and verify the counterparty independently. Do not accept a claim that an image of a deposit confirmation or an email labeled “certified funds” is equivalent to money received.

Verify safely without trusting the sender’s contact details

If you receive a purported cashier’s check, find the issuing bank’s telephone number from its official website or regulator listing, not from the check, text message or seller-provided link. Explain that you have a suspected counterfeit instrument and ask what verification information the bank can provide. Some banks will not authenticate an individual item over the phone for privacy or fraud-control reasons. A refusal to verify is not proof the check is good; it means you should choose a safer settlement method rather than interpreting silence as authorization.

Do not photograph and upload the entire check, account information or identity documents to a stranger’s verification portal. Keep messages, the envelope, any tracking details and an image of the item for a bank fraud department or law-enforcement report. If you have not deposited it, ask your bank what handling is appropriate before trying a different branch or mobile deposit. Repeated attempts to deposit an item already identified as suspicious can complicate a later investigation. Verify the commercial purpose as well as the instrument.

Respond quickly if you deposited it or returned money

If you have deposited the check, tell your bank’s fraud team immediately that the payment may be counterfeit. Ask whether a provisional credit is being held, whether outbound transfers can be stopped and whether any replacement-account precautions are appropriate. If you already sent a wire, payment-app transfer or gift-card code, contact the sending provider directly and request an urgent recall or fraud review. Recoveries are time-sensitive and not guaranteed. Preserve confirmation numbers rather than assuming filing a police report automatically reverses a transfer.

Write a one-page chronology: check amount, date received, payer’s name as presented, deposit method, account credited, amount forwarded, recipient, payment rail and timestamps. Reporting the incident to the FTC at ReportFraud.ftc.gov can support enforcement information, but it is not a substitute for your bank dispute. If fraud caused an unauthorized electronic transfer, ask the bank to evaluate the applicable Regulation E protections separately. Money you personally sent after deception may involve different rights, so describe the actions precisely instead of simply calling everything unauthorized.

Choose a safer payment process for the next transaction

For marketplace sales, meet at an appropriate secure location, verify ownership and identity where reasonable, and avoid receiving a check for more than the actual price. For professional services, use a written invoice and require payment to the service provider—not an intermediary selected by the customer. For large purchases, discuss a verified bank-to-bank payment or reputable escrow arrangement whose instructions you obtain independently. A legitimate buyer has no reason to insist that you quickly forward an unexplained excess to a third party you have never met.

Before handing over merchandise, evaluate both timing and finality. A bank transfer can have fraud or recall risk, card payments can have dispute rights, and cash has physical security risks; no rail is completely risk-free. Your objective is to avoid financing a stranger’s supposedly separate obligation. The strongest practical rule is simple: never turn a check from an unknown person into a payment to someone else. If the transaction requires that sequence, decline it and choose a documented alternative.

Frequently asked questions

Does a cashier’s check mean the money is guaranteed? No. A genuine bank-issued cashier’s check is different from a counterfeit item that merely looks like one.

Can I keep the extra amount if it shows as available? No. Availability does not prove the check was paid; the bank can remove a returned or fraudulent credit.

What if I already sent the requested refund? Contact the sending payment provider and your bank immediately, document the details and report the suspected scam.

MyBankAnswers Editorial Verdict

The dangerous feature of an overpayment check scam is the timing gap between a visible deposit credit and discovery that the instrument was worthless. Do not use the bank-app balance as permission to send the excess, and do not trust contact details printed on the item. A buyer who cannot settle the precise agreed price through a verifiable method is asking you to finance a risk you did not accept. If the check has already been deposited, alert the bank while records and recovery options are still fresh. For a completed transfer, preserve the exact payment path; it determines which dispute and recovery mechanisms may apply.

Sources and verification

• FTC: how fake check scams work
• FTC: fake check overpayment targeting sellers
• FTC: refund and recovery scams