Fake Check and Overpayment Scams: Why "The Funds Are Available" Doesn't Mean the Check Is Good

A fake check scam is when someone you don’t know sends you a check, asks you to deposit it and send some of the money on, and the check later turns out to be counterfeit. Your bank takes the full amount back, and whatever you sent is gone. The trick works because your bank shows the money as available long before anyone knows the check is fake¹. Everything below is about recognising the setup before the deposit, and what to do if you’re already past it.

I’m not a banker, and before my own scam I had a vague belief that a bank wouldn’t let you spend money that wasn’t real. It isn’t true, and it’s the belief this whole category of fraud is built on.

How the scam works

Every fake check scam has three steps: a check from a stranger, a reason to send some of it on, and a delay before the check bounces. The story around those steps changes; the steps don’t.

1. The check arrives. It might be a personal check, a business check, a cashier’s check or a money order. It often looks perfect, with real bank names and routing numbers.
2. You’re asked to deposit it and pass some on. The reason varies: you were overpaid, you need to buy equipment for a new job, you need to pay taxes on a prize, or you need to send the difference to a shipper.
3. The money is available, so you send it. The method requested is almost always one that can’t be pulled back: a wire, gift cards, cryptocurrency, or a payment app¹.

Days or weeks later, the check is returned as counterfeit. The bank reverses the deposit, and you’re left owing whatever you sent¹.

Why “available” isn’t “cleared”

Banks are required to make most deposited funds available within a few business days, but discovering that a check is fake can take far longer. That gap is the scam.

When you deposit a check, your bank gives you access to the money on a timetable set by rules about funds availability, often a day or two for much of it. Meanwhile the check travels back to the bank it’s drawn on, and only when that bank refuses it does your bank learn it’s fake. By then, scammers are counting on you having already sent the money on. Bank staff saying “the funds are available” are telling you about timing, not about whether the check is genuine, and the FTC’s advice is that you should not rely on money from a check from someone you don’t know¹.

The common covers

The four stories that most often carry a fake check are an overpayment, a job, a prize and a deposit. Recognising the cover is less important than recognising the request to send money back, but it helps to know what they look like.

• Overpayment for something you’re selling. A buyer for your car, furniture or concert tickets sends a check for more than the price and asks you to wire the difference to their shipper. It turns up constantly on marketplace sites, as the guide to online shopping and marketplace scams describes.
• Mystery shopper and remote jobs. You’re “hired” without an interview and sent a check to buy gift cards, equipment or supplies, then asked to send the rest back. The FTC flags these as classic job scams², and they overlap heavily with the patterns in job and employment scams.
• Prizes, grants and lotteries. A check arrives as part of your winnings, with instructions to send back taxes or fees. A real prize never asks for money to release it³, as set out in lottery and prize scams.
• Rentals and roommates. A would-be tenant or roommate, often abroad, sends a check for the deposit that’s too large and asks for the excess back before they arrive.

There are other versions, including car wrap advertising offers and “you’ve been overpaid” messages from someone pretending to be a client, but they all end at the same request.

Red flags before you deposit

The single rule that catches every version: never deposit a check from someone you don’t know and send any of the money back or on. If a story requires that, it’s a scam¹.

Other signs that point the same way:

• The amount is more than you’re owed, and there’s a ready explanation for why.
• You’re asked to act fast, before the check could possibly have cleared.
• You’re asked to pay in gift cards, crypto, a wire, or a payment app.
• The sender can’t or won’t meet, talk on the phone, or pay any other way.
• The check is drawn on a business or bank that has nothing to do with the sender’s story.

If you want to verify a cashier’s check, call the issuing bank on a number you find yourself, not the one printed on the check. Counterfeits carry convincing phone numbers that go straight back to the scammer.

If you’ve already deposited or sent money

Act in this order: stop more money leaving, talk to your bank, then report it. The general sequence is the same one set out in what to do if you have been scammed.

1. Don’t send anything more. If the check hasn’t bounced yet, don’t send money “to be safe”. Tell your bank what happened and ask them to hold off.
2. Contact the service you used to send money. Gift card companies, wire services and payment apps sometimes can stop or reverse a transfer if you’re quick, and the FTC lists who to contact for each method⁴.
3. Talk to your bank about the reversal. Ask how it will handle the returned check and what it means for your account. The amount will usually be taken back, and you may need a plan if that leaves you overdrawn.
4. Report it. Report at ReportFraud.ftc.gov⁵ and to the FBI’s Internet Crime Complaint Center⁶. If the check came by mail, the US Postal Inspection Service also takes reports. Keep the check, the envelope and every message.

Once you’ve lost money to one scam, expect contact from people offering to get it back for a fee. They are the second wave, as described in recovery scams.

Why smart people fall for it

Because the scam borrows the authority of the bank itself. When a teller or an app tells you the money is there, it feels like the bank has vouched for the check. People who would never send money to a stranger send it because, as far as they can see, the stranger’s money arrived first.

Being caught by a fake check isn’t a failure of intelligence. It’s a failure of a reasonable assumption about how banks work, and the criminals running these schemes know that assumption better than most of us. If you’ve been caught, the money and paperwork side of it matters, and so does the other side, which the emotional impact of being scammed talks about honestly.

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This article is general information about how scams operate, not legal or financial advice. If you’ve lost money, contact your bank and the official reporting channels directly for advice on your own situation.