Your phone pings, and you open Zelle to find $500 sitting in your account, but it isn’t from your employer, a friend or anyone you recognize. Instead, it’s from a stranger, sent through Zelle with no explanation. At first, it feels like an unexpected windfall. Who wouldn’t be tempted to think of it as free money?.

But that surprise transfer may not be a lucky break. Money sent to your account by someone you don’t know often signals a mistake or, worse, the beginning of a scam. And if you decide to keep or spend the funds, you could quickly find yourself in trouble. Understanding why these “accidental” payments happen and how scammers exploit them can help you protect your account and your wallet.

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Why keeping the money isn’t the right move

Unexpected deposits through payment apps are not gifts. Under federal rules like the Electronic Fund Transfer Act, unauthorized transactions can be reversed if they are reported. That means the money you see in your account could disappear just as suddenly as it appeared, especially if it was tied to fraud. Spending it can leave you in financial and legal trouble.

There is also a strong chance that what seems like a mistake is actually part of a scam.

Internet scams have become widespread. In the FBI’s latest 2024 Internet Crime Report, more than 859,000 complaints were filed with the Bureau, and reported losses to Americans increased 33 percent from 2023 to an eye-watering $16.6 billion.

How the scam works

The way the fraud typically unfolds is simple but effective. Here’s the basic play:

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How to protect yourself when you receive unexpected money in a payment app

The best response to an unexpected Zelle payment is to pause and not treat it as your money. Contact your bank or the payment app provider immediately and report the transfer. Do not send money back to the supposed sender, no matter how urgent or emotional their request may sound.

If you have already spent or returned the funds, alert your bank right away so that they can document the case and advise on next steps. It’s also important to remember that money sitting in payment apps may not be protected by federal deposit insurance. Moving funds into your bank account adds a layer of security in case of disputes.

Finally, if you suspect a scam, you can report it to federal agencies such as the Consumer Financial Protection Bureau, the Federal Trade Commission or the FBI. These agencies track fraud trends and may be able to help resolve your complaint.

The bottom line

An unexpected $500 in your Zelle account may feel like free money, but it almost certainly is not. More often than not, it is the start of a scam designed to trick you into giving away your own funds.

Even when the money comes from an honest mistake, it is not yours to keep. The safest and most ethical course is to report the transfer, wait for guidance from your bank or the app provider, and avoid sending anything back until you are sure the situation is legitimate. Treating surprise deposits with caution protects both your finances and your peace of mind.

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This article originally appeared on Moneywise.com under the title: Someone I don’t know deposited $500 to my Zelle account — is there any harm in just keeping it?

This article provides information only and should not be construed as advice. It is provided without warranty of any kind.