If a casino overpays you, the money is not yours to keep: a legal doctrine called unjust enrichment requires you to give it back, and refusing can expose you to a civil lawsuit, criminal theft charges, or both. How bad it gets depends on the amount, how fast the error is caught, and whether you cooperate when the casino asks for its money.
Why the Money Isn’t Yours to Keep
When a dealer miscounts chips or a cashier slides too much cash across the window, ownership of that money doesn’t transfer. Courts treat the situation through unjust enrichment, which says a person who receives a benefit at someone else’s expense without legal justification has to return it.
To recover, the casino only needs to show three things: you received a benefit, it came at the casino’s expense, and keeping it would be unjust. An accidental overpayment satisfies all three. The obligation to return exists whether or not you noticed the mistake at the time.
When Keeping It Becomes a Crime
There is a meaningful line between owing a civil debt and committing a crime, and intent is what divides them. You owe the money back even if you had no idea the dealer miscounted. Criminal liability starts when you know the payment was a mistake and choose to keep it anyway.
Most states treat knowingly keeping money received by error as a form of theft or larceny. The label varies by jurisdiction — theft by deception in some, theft of mislaid property in others — but the elements line up: you received property you weren’t entitled to, you knew it wasn’t yours, and you kept or spent it instead of returning it. Spending the money after discovering the error is especially damaging, because it shows intent more clearly than almost anything else.
Whether prosecutors file charges usually tracks the amount. A $20 miscount is unlikely to draw criminal attention. A $5,000 error that you pocket and refuse to return is a different story. Surveillance footage and transaction logs give casinos strong evidence, and a conviction can bring fines, mandatory restitution, and jail time scaled to your state’s theft-offense tiers.
How the Casino Will Find Out and Come After You
If you’re picturing a distracted cashier who won’t notice an extra hundred, casino accounting should change your thinking. At every shift change, outgoing and incoming cashiers jointly count the cage’s cash, chips, and credit instruments and reconcile against the prior shift. Any discrepancy triggers an investigation. Table-level sensors track where chips are placed, automated fill and credit tracking flags unusual movements, and supervisors watch all of it in real time.
Then there’s video. High-resolution cameras cover every table, cage window, and cash-handling area. When a drawer comes up short, security can pull footage from the entire shift and pinpoint the exact transaction where the error occurred. Between electronic tracking, physical counts, and camera coverage, the odds of an overpayment slipping through are close to zero.
Recovery starts polite and escalates. If you’re still on the property, expect a floor supervisor or security officer to approach you, explain the mistake, and ask for the money back. Most errors are caught within hours, so this is the common scenario. If you’ve already left, the casino pulls your player’s card records or any ID you used, then calls or writes. Casinos that extend credit also share patron data through industry databases, and an unresolved debt can follow you from property to property.1Everi. CentralCredit
If informal contact fails, the casino’s legal team sends a formal demand letter with a deadline. Ignore that and you’re looking at a civil lawsuit or a collections agency. Judgments accrue interest, which varies by state but commonly falls between 2% and 9% annually, and they sit on your record for years.
Slot Machine Errors Work Differently
Table game overpayments involve human mistakes. Slot machine errors are a separate problem. Nearly every slot machine in the country carries a disclaimer: “Malfunction voids all pays and plays.” Gaming commissions treat that language as part of the contract between you and the machine, and courts have enforced it even when the displayed amount was life-changing.
In one Iowa case, a player saw a bonus award of more than $41 million flash on her screen. The casino refused to pay and pointed to a software glitch. The state gaming commission sided with the casino, and the Iowa Supreme Court agreed, finding that the game’s posted rules capped the award at $10,000 and allowed no bonus of that type. The screen message was a “gratuitous promise,” not a binding payout.
The practical lesson: if an electronic game displays a payout wildly out of proportion to its stakes, it’s almost certainly an error, and challenging it through a gaming commission or court rarely changes the outcome.
Tax Problems That Come With Overpayments
Even doing the right thing can create a tax headache. Casinos report certain gambling payouts to the IRS on Form W-2G, and the reporting threshold for payments made in 2026 is $2,000.2Internal Revenue Service. Instructions for Forms W-2G and 5754 (01/2026)
If the casino already issued a W-2G for a payout that included an overpaid amount, you’ve been reported to the IRS for income you never actually kept. Returning the money in the same tax year is simpler, because the casino can void or correct the form. If the overpayment crosses into a new tax year before you return it, you may have to rely on the claim-of-right doctrine under Section 1341 of the tax code to deduct the repayment, which is more complicated than a standard deduction and often needs professional help.
Return overpayments quickly, and ask the casino to confirm in writing whether any tax forms were filed. The longer the money sits, the more tangled the tax picture gets.
Other Fallout to Expect
Even if you eventually return every dollar, refusing to cooperate upfront can damage your standing across the industry. Casinos can ban you from their property at any time for any reason, and keeping an overpayment is easy justification. Many casino companies operate multiple properties, so a ban at one location can extend to sister casinos in other states.
Industry credit databases amplify the effect. When one casino records an unresolved debt against your name, others can see it before extending credit or loyalty benefits, and some of these databases partner with mainstream credit bureaus like Experian and TransUnion. The impact can reach beyond the casino floor.
If the dispute escalates to a criminal theft conviction, the consequences widen further. Many states treat crimes involving dishonesty as substantially related to almost any licensed profession, which can create problems with professional licensing boards. For anyone holding or applying for a federal security clearance, an unpaid casino judgment raises financial reliability flags under the adjudicative guidelines for financial considerations.
What to Do if It Happens to You
Don’t touch the extra money, and speak up right away. Flag the error to the dealer, a floor supervisor, or the cashier cage. You’ll save yourself a civil claim, possible criminal exposure, and a tax mess. People who report mistakes promptly tend to get thanked rather than punished, because the staff’s own accountability is on the line and your honesty helps the count balance at end of shift.
When you return the money, insist on documentation. Ask a manager to oversee the correction, and get a signed receipt or written confirmation that the overpayment was resolved and the matter is closed. If a W-2G was generated that included the overpaid amount, ask for a corrected form. Keep your copies. The paperwork protects you if the casino’s records later show a discrepancy or the IRS questions your return.
If you’ve already left and realize later that you were overpaid, call the property’s cage or player services department. Returning the money voluntarily, even after the fact, eliminates any argument about criminal intent and gives the casino every reason to resolve the matter quietly rather than through lawyers or law enforcement.