If you find a debit card that isn’t yours, call the toll-free number printed on the back and tell the representative you found it. That single call freezes the account and stops anyone from using the card, which is the whole point of reporting. Everything else — where the physical card ends up — follows from what the bank tells you next.
Call the Number on the Back of the Card
Flip the card over and look near the signature panel for a toll-free number, usually starting with 1-800 or 1-888. Most bank lost-and-stolen lines run 24 hours a day, seven days a week, so it doesn’t matter if you found the card at 2 a.m. or on a holiday. You do not need to be the cardholder to make this call.
Tell the representative you found someone else’s card and want to report it. They’ll ask for the name printed on the card or the sixteen-digit number on the front so they can locate the account. Once they verify it, the card is deactivated on the spot — no more purchases, no more ATM withdrawals. The representative will then tell you what to do with the plastic in your hand. Usually that means either destroying it or dropping it at a branch. Once you’ve done that, you’re finished.
Resist the urge to track down the owner yourself through social media or in person. You could hand the card to the wrong person, or the real owner could accuse you of having taken it. The bank’s fraud department exists to handle the notification.
If You’d Rather Hand It Off in Person
If you recognize the bank logo and there’s a branch nearby, you can walk in and give the card to a teller. Branch staff can deactivate it and reach out to the account holder directly, and this is often the quickest route when the issuer is a large national bank.
Found the card inside a store or restaurant? Handing it to a manager or the customer service desk is reasonable. Many businesses keep a lost-and-found and will try to reach the cardholder or the bank.
You can also bring the card to your local police precinct, and officers can attempt to notify the owner using the information on it. Don’t call 911 — this isn’t an emergency. Just walk in.
Why Reporting Fast Actually Matters
Your quick call doesn’t only prevent new fraud. It caps how much the cardholder can be held responsible for if unauthorized charges have already gone through. Under the Electronic Fund Transfer Act, a cardholder’s maximum liability for unauthorized transactions is $50 if the bank is notified promptly. Wait more than two business days after discovering the loss and the cap rises to $500. Let it go more than 60 days after the bank sends a statement showing unauthorized transactions and the cardholder can be on the hook for the full amount lost.1Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability
Every hour the card stays live is an hour someone else can use it. Contactless tap-to-pay makes that worse: many terminals let small purchases go through without a PIN, often under $50 to $100 per tap. Someone with a found card can rack up charge after charge just by walking store to store. The phone call shuts that door.
Destroying the Card the Right Way
If the bank tells you to destroy the card instead of returning it, don’t just drop it in the trash intact. The magnetic stripe on the back and the EMV chip on the front both hold account data that can be pulled off a whole card.
For a standard plastic card, cut through the magnetic stripe, the chip, and the card number with scissors. Slice the pieces down into several small fragments and split them between separate trash bags so no one can piece them back together.
Metal Cards
Some premium debit cards are made of metal and won’t yield to kitchen scissors. The safer move is to return a metal card to the issuing bank’s branch. If the bank still wants you to destroy it, you’ll need metal snips or heavy-duty cutters, plus gloves and eye protection, because fragments can be sharp and can fly during cutting. Do not run a metal card through a household shredder — it can jam or overheat the motor.
What Not to Do With a Found Card
The line between doing a favor and committing a crime is thinner than people assume.
- Don’t use the card for any purchase, however small. Using a found debit card, even to “test” whether it works, is fraud under federal and state law.
- Don’t try an ATM withdrawal. It’s treated the same as using a stolen card.
- Don’t hold onto the card “until the owner shows up.” In many states, keeping a found card without taking steps to report it meets the legal definition of theft.
- Don’t post photos of it online. Even a well-meaning “does anyone know this person?” post exposes the number, name, and expiration date to anyone who sees it.
What the Law Does to People Who Use a Found Card
Federal law is not gentle here. Under the Electronic Fund Transfer Act, knowingly using a lost debit instrument to obtain $1,000 or more in money, goods, or services within a one-year period is punishable by a fine of up to $10,000, up to ten years in prison, or both.2Office of the Law Revision Counsel. 15 USC 1693n – Criminal Liability A separate access device fraud statute carries up to ten years for a first offense and up to twenty for a repeat.3Office of the Law Revision Counsel. 18 USC 1029 – Fraud and Related Activity in Connection With Access Devices
State law layers on top. Many states classify use of someone else’s debit card as a felony regardless of the dollar amount. In some states, simply possessing a card you know isn’t yours — even without using it — can be charged as illegal possession of a financial instrument. And keeping a found card without any effort to return it or report it can qualify as theft of lost property in most states. You don’t have to spend a cent on the card to be charged; failing to take reasonable steps to return it is enough in many jurisdictions.