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Fake check and overpayment scams: why available funds can still bounce

If someone you do not know sends you a check for more than they owe and asks you to send back the difference, it is a fake check scam. Your bank has to make deposited money available within days, but a fake check can take weeks to be discovered, and then the bank takes the money back and you owe what you sent. Never send money back from a check, and never accept a check for more than the price.
Close-up of a check made out for 584 dollars and 36 cents, resting on a white envelope
Photo: Shutterbug26 on Pixabay

Before you deposit a check from a stranger

Tap each one as you check it.

How the overpayment scam works

The FTC describes the pattern. Someone you do not know sends you a check, usually for more than they owe, and asks you to deposit it and send part of the money somewhere else.

  • A buyer for something you are selling online pays too much and asks for a refund of the difference.
  • A new job sends a check to buy equipment or supplies from their vendor.
  • A prize or sweepstakes sends a check and asks you to pay the taxes or fees.
  • A sugar daddy or online friend sends an allowance and asks for a small favor first.

The FTC's rule for sellers: if someone sends a check for more than the selling price, you can bet it is a scam.

What the message looks like

Example. Names and numbers are made up.

Why funds available does not mean the check cleared

Federal rules make banks release deposited check money quickly. The CFPB explains that some deposits must be available by the next business day and most local check amounts within two business days.

Checking whether a check is real takes much longer. The FTC says fake checks can take weeks to be discovered and untangled, and that seeing the funds in your account does not mean it is a good check.

When the fake is found, the deposit is reversed. The FDIC says you will likely be held responsible for the money you sent to the scammer, which means your own money is gone and you may owe the bank too.

Fake check red flags and safe signs

Signs it is a fake check scam

  • A check for more than the price or amount agreed
  • Asks you to send the extra back or to a third person
  • Wants the money returned by gift card, wire, crypto or payment app
  • Urgency: send it today, before the check would bounce
  • A stranger who will not meet or pay in a simpler way

What a real payment looks like

  • The exact amount you agreed, nothing extra
  • No request to pass any money on to anyone
  • Paid in a way you can confirm in your own bank's app
  • No rush; happy to wait until the check is paid
  • A buyer who can meet and pay in person
A payment screenshot or an email saying money was sent is not money either. See fake payment screenshots.

How to check whether a check is real

The FDIC says to contact the bank that supposedly issued the check, using a phone number from the bank's official website, not the number printed on the check, because scammers may control that number. Have the check number, date and amount ready.

Even then, the safest choice is simple. Do not rely on money from a check from someone you do not know and trust, and do not send any of it anywhere.

If it already happened

  1. Do not send any more money, and do not spend the money from the check. Tell your bank right away that you think the check is fake.
  2. If you already sent money, contact the company you used straight away: the gift card issuer, wire service, money order company, payment app or crypto exchange. Ask them to stop or reverse the payment.
  3. If you were selling an item, do not hand it over until your bank confirms the check has actually been paid.
  4. Report the scam to the FTC, the U.S. Postal Inspection Service and your state attorney general, as the FTC recommends.
  5. Keep the check, the envelope, the messages and any receipts.
  • ReportFraud.ftc.govReport the scam to the Federal Trade Commission.
  • IC3.govThe FBI’s internet crime complaint center, for losses online.
  • IdentityTheft.govIf they got your ID, Social Security number or account details.

Questions

Can a check bounce after the funds are available?
Yes. Banks have to make the money available within days, but a fake check can take weeks to be discovered. When it is, the bank reverses the deposit.
Am I responsible if I deposit a fake check?
Usually, yes. The FDIC says you will likely be held responsible for the money you sent to the scammer, and the bank can take the deposit back from your account.
Are cashier's checks safe?
Not when they come from a stranger. Fake cashier's checks are common in these scams, so call the issuing bank on a number you looked up yourself before you rely on one.
Why would a buyer overpay on purpose?
So you send real money back before the bank discovers their check is fake. The overpayment is the whole scam.

Realr does not check checks or payments, but before you sell to or work with a stranger you can ask them to prove who they are with a Realr check.

Ask them to verify

Sources

Checked against the sources above on 17 October 2026. By Manav Sharma, Marketing Team, Realr. This is general guidance, not legal advice.

Ask them to prove who they are, before you pay or meet.

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