If you find someone’s credit card, call the phone number printed on the back of the card and tell the bank you found it. That one call, which takes about two minutes, lets the bank cancel the card, notify the cardholder, and send a replacement. Everything else follows from it.
Call the Number on the Back of the Card
Flip the card over. Nearly every credit card has a customer service number printed on the back. Call it, say you found someone’s card, and follow the representative’s instructions. They may ask for the card type, the last four digits of the number, and where and when you found it. That is enough for them to freeze the account and start the replacement.
If the number is worn off or unreadable, check the front. The issuing bank’s name is usually printed there, and the network logo (Visa, Mastercard, American Express, Discover) is always visible. A quick web search for that bank’s lost-card hotline will get you connected. American Express is both the network and the issuer, so an Amex number is easy to find; for Visa and Mastercard cards, you need the specific bank that issued the card, not the network itself.
If You’d Rather Not Call
Found the card inside a store or restaurant? Handing it to an employee or manager is a reasonable first step. Most businesses have a lost-and-found process, and the cardholder’s first instinct will be to retrace their steps. The catch is that the business may not call the issuing bank right away, so if you have a moment, calling the number on the back yourself before turning the card over is more reliable.
You can also drop the card at a local police station. Officers will typically log it as found property and try to contact the owner. This route matters more for debit cards, where every hour of delay can cost the cardholder real money. For credit cards, federal law caps liability regardless of timing, but reporting quickly still spares the cardholder the hassle of disputing fraudulent charges.
Found a Debit Card Instead
A found debit card is more urgent than a found credit card. Credit cards draw from a line of credit, so fraudulent charges don’t immediately drain anyone’s bank account. Debit cards pull directly from a checking account, and unauthorized transactions can empty a balance before the cardholder even realizes the card is gone.
Federal law treats the two differently. Credit card holders are capped at $50 in liability for unauthorized charges regardless of how long they take to notice.1Office of the Law Revision Counsel. 15 USC 1643 – Liability of Holder of Credit Card2Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability3Consumer Financial Protection Bureau. Regulation E – Liability of Consumer for Unauthorized Transfers If the card you found is a debit card, get it reported the same day.
Speed Matters Either Way
Modern cards with contactless payment technology can be tapped at a terminal without a PIN or a signature. Anyone who picks up a lost card can potentially use it immediately, with no verification. The faster the card is reported and canceled, the smaller the window for fraud.
It is easy to think “I’ll deal with it later” and toss the card in a drawer. Every hour it sits unreported is an hour someone else could find it, or the cardholder could be racking up fraudulent charges they’ll have to dispute. Making the call right away is a real favor to a stranger.
Destroying the Card If the Bank Asks
The representative you speak to will often ask you to destroy the card rather than mail it back. Once the number is canceled, the physical card is useless for legitimate purchases, but someone could still attempt to use it before the cancellation fully propagates through the payment network. Destroying it closes that window.
For a standard plastic card, cut it into several pieces with scissors, slicing through the chip and the magnetic stripe. Toss the pieces into separate trash bags if you can. Metal cards are harder to cut. Tin snips work; otherwise, the bank may suggest dropping the card at a local branch. The goal is to make sure nobody can piece together the number or use the chip after disposal.
What Not to Do
Do not use the card. Not for a coffee, not for a dollar, not “just to see if it works.” Using someone else’s credit card without permission is a federal crime regardless of the amount, and it doesn’t matter that you found it rather than stole it. Federal law specifically lists lost credit cards alongside stolen and forged ones as instruments whose unauthorized use triggers criminal penalties.4Office of the Law Revision Counsel. 15 USC 1644 – Fraudulent Use of Credit Cards
Don’t try to track down the cardholder yourself either. Looking someone up on social media to return their card may feel like a kindness, but most people will be uncomfortable knowing a stranger has their card number and their personal information. The issuing bank has secure processes for reaching the cardholder. Let them handle it.
And don’t just leave the card where you found it. A card sitting on a sidewalk or parking lot floor will eventually be picked up by someone less scrupulous. Picking it up and calling the bank takes it out of circulation entirely.
Criminal Penalties for Using a Found Card
Two federal statutes cover credit card fraud, and both carry serious prison time. Under the Truth in Lending Act, using a lost or stolen credit card to obtain $1,000 or more in goods, services, or cash within a one-year period is punishable by up to 10 years in federal prison and a fine of up to $10,000.4Office of the Law Revision Counsel. 15 USC 1644 – Fraudulent Use of Credit Cards
The broader federal access device fraud statute casts an even wider net. It covers credit cards as “access devices” and imposes penalties of up to 10 or 15 years in prison depending on the specific offense, plus fines that can reach $250,000 for individuals under the general federal sentencing guidelines.5Office of the Law Revision Counsel. 18 US Code 1029 – Fraud and Related Activity in Connection With Access Devices6Office of the Law Revision Counsel. 18 US Code 3571 – Sentence of Fine
Those are just the federal charges. Most states have their own credit card fraud and theft statutes that can stack additional penalties, and a conviction leaves a permanent criminal record that makes employment, housing, and credit applications harder for years afterward. No purchase is worth that. Property law also draws a clear line: finding something doesn’t make it yours. A credit card is lost property, the original owner retains ownership, and many states require finders to turn lost property over to a government official within a set period.7Legal Information Institute. Lost Property The easiest way to meet that obligation is the two-minute call to the number on the back.