The word scam makes people picture a pickpocket. The reality at a currency counter is far more boring and far more effective: a rate board with two columns, a teller who counts fast, a receipt printed after the money changes hands, and a customer who does not want to look rude by recounting in public.
Most of what follows is legal in most places. That is exactly why it works. The defense is not vigilance about crime, it is a short, unglamorous routine you run every time money changes form. Here are the eight tricks that account for the overwhelming majority of losses, and the check that neutralizes each one.
1. The Board Shows the Rate You Are Not Getting
Every rate board has two columns. One is what the counter pays to buy a currency, the other is what it charges to sell it. They are labeled, usually in the local language, and the difference between them is the shop's margin. The number that catches a tourist's eye is very often the wrong side of that pair.
The layout is not an accident. Boards in heavy tourist zones are frequently arranged so that the most attractive number is the largest and the most prominent, regardless of which direction it applies to. A traveler glances up, sees a good number next to a familiar flag, and walks in already anchored on a price they will never be offered.
The check. Ignore the board entirely. Ask one question: if I give you two hundred dollars, exactly how much do I receive in hand, after everything. Any legitimate counter will answer instantly and will write it down. A counter that will not give you that number before you commit is telling you something.
2. The Headline Rate That Requires a Small Fortune
The good rate has a minimum. A window advertises an excellent rate in large type, and somewhere in smaller print sits a condition: applies to transactions over five thousand of something. Below that threshold, a different and much worse rate applies, and the counter has no obligation to mention it because it is printed on the sign.
Tiered rates are common and mostly honest. Bigger transactions really are cheaper to process, so tiering exists at legitimate businesses too. The abuse is in the presentation, where the tier almost no tourist qualifies for gets the headline and the tier everyone actually uses gets the fine print.
The check. The same one. Get the final amount in hand for the specific sum you intend to exchange, before you hand anything over. A threshold you do not meet becomes visible the moment you ask about a real number instead of a rate.
3. Commission-Free, Margin-Heavy
Zero commission does not mean zero cost. When a counter drops its explicit fee, it widens the gap between its rate and the real one to compensate, and the total you pay usually stays the same or gets worse. The word free simply moves the charge from a line you can see to a rate you cannot easily evaluate.
It is most aggressive where comparison is hardest. Airport arrivals halls and hotel lobbies are the two places where a traveler is least able to walk away and check, which is why the signage is loudest there. We break down the airport version in airport exchange versus your bank and the hotel version in hotel currency exchange.
The check. Look up the mid-market rate on your phone, then compare it against the amount you were quoted in hand. A spread of roughly two to four percent is normal on a high street. Ten percent or worse is a tourist premium regardless of what the commission line says.
The Rate That Cannot Be Negotiated at a Counter
A Wise account converts at the mid-market rate with the fee shown as a separate line, so there is no board to misread and no margin hidden in the number. It is the simplest way to take the counter out of the equation entirely.
Get the Wise Card →Free account, ~$9 card fee. Want local cash in hand before you land? Order currency at a locked rate →
4. The Fast Count
The oldest one, and still the most profitable. The teller counts a stack quickly, fans it, sets it down, and pushes it across with a receipt on top. The count was short by one or two notes. If you notice at the counter you get an apology and the missing note. If you notice in your hotel room you get nothing.
Distraction is part of the method. Something happens at the moment of handover: a question about your hotel, a phone ringing, a second person appearing at the window, the notes handed over folded so the fan looks thicker than it is. None of it is coincidence.
The check. Count it yourself, at the window, out loud if you like, before you put anything in your bag. It takes fifteen seconds and it is completely normal behavior in most of the world. The only person embarrassed by it is a teller who was hoping you would not. A traveler in Paris learned this the expensive way in our account of a six hundred dollar exchange booth loss.
5. The Padded Stack
The count is right, the notes are not. You get the correct number of pieces of paper, but a portion of them are denominations far smaller than you assumed, or notes from a previous series that have been withdrawn from circulation, or currency from a neighboring country that looks similar at a glance.
Withdrawn notes are the elegant version. Several countries have re-issued their banknotes in recent decades, and old series often stop being legal tender at shops long before a central bank stops redeeming them. Handing an unfamiliar tourist a stack of the old design costs the changer nothing and leaves you with paper no taxi will accept.
The check. Spend two minutes before the trip looking at images of the currency you are about to receive, so you know the current series and the denominations. Then, at the counter, check the stack for consistency rather than just counting pieces. Our country guides flag which notes are in circulation, and the near-miss in a counterfeit close call in Morocco shows how fast this can go wrong.
6. The Street Changer With the Unbeatable Rate
The rate is better because the transaction is unverifiable. A person on a corner can offer a number no licensed shop can match because they are not planning to complete the trade honestly. The rate is bait, and the profit comes at the moment of exchange: a short count, a swapped bundle, a sudden warning that police are coming, and a hurried handover in a doorway.
The police distraction is a script, not bad luck. In several cities the standard version involves an accomplice appearing mid-transaction to announce that changing money on the street is illegal, at which point the notes are grabbed back for safekeeping and returned as a thinner stack. The urgency is manufactured precisely so you cannot count.
Parallel markets complicate the picture, but not the safety rule. In a handful of countries with capital controls, the unofficial rate is genuinely far better than the official one and locals really do use it. Even there, the safe path runs through a licensed office or an established business, not a stranger on a pavement. We cover how travelers navigate this in street money changers in Peru and, for the most extreme case, in the Argentina money guide.
⚠️ The Receipt Trick
Some counters print the receipt only after the cash has been handed over, and some hand you a slip that shows the amount you gave rather than the amount you received. If you later query the transaction, the paperwork does not support you. Ask for the receipt before the money moves, check that it shows both figures and the rate applied, and photograph it at the window. Thirty seconds of paperwork is the difference between a complaint and a documented dispute.
7. The Card Terminal at the Counter
Paying by card does not exempt you. Exchange offices, and increasingly the shops around them, run terminals configured to offer you the transaction in your home currency. Accepting means the merchant's payment processor sets the exchange rate instead of your card network, at a markup that is invisible in the moment because the number is shown in dollars and looks reassuring.
The prompt is engineered to be accepted. Home currency sits on the prominent button, the phrasing implies protection from fluctuation, and the terminal is often turned toward you for only a second. Our dynamic currency conversion explainer shows how much the markup actually is and where the money goes.
The check. Always choose the local currency, on every terminal, in every country, without exception. If a receipt shows your home currency and you did not choose it, ask for it to be voided and re-run, which the merchant can do while you are still standing there.
8. The Machine That Was Modified Overnight
Not an exchange scam, but the same trip and the same wallet. Card skimming targets standalone machines in tourist areas: a false card reader over the real slot, a pinhole camera above the keypad, or a thin overlay on the keys. The withdrawal works normally, which is the point. The loss appears days later.
Location does most of the work. Machines built into a bank branch are serviced, monitored, and physically harder to tamper with. Free-standing boxes on a pavement or in a small shop are not. This is one of several reasons we steer travelers away from independent tourist-area machines in our guide to Euronet and the other yellow boxes.
The check. Tug the card slot before inserting, cover the keypad with your other hand while entering the PIN, and use bank machines during branch hours where possible. Then check the account that evening rather than at the end of the trip. The story of a nine hundred dollar ATM fraud in Thailand is a useful illustration of how ordinary the transaction looks at the time.
The Thirty-Second Routine That Stops All of This
Know the real rate before you walk up. One glance at a converter app gives you the mid-market number. Everything else is a negotiation against that anchor, and without it you have no way to judge whether a quote is fair.
Ask for the amount in hand, not the rate. This single habit defeats the board layout, the tiered minimum, the hidden commission, and the surprise service charge in one question, because all of them exist in the gap between a quoted rate and a delivered total.
Count at the window, every time. Not in your bag, not around the corner. At the window, before you say thank you.
Take the receipt and photograph it. With the rate board visible in the frame if you can manage it without making a scene.
Never exchange under time pressure. Urgency is the shared ingredient in every trick on this list, whether it is manufactured by an accomplice or simply supplied by your own tight connection. Arriving with some local currency already in your pocket removes the pressure entirely, which is why we generally suggest exchanging a small amount before you travel and sorting the rest out calmly on the ground.
Where This Is Most Likely to Happen
Arrivals halls and border crossings. Maximum urgency, minimum comparison, a captive customer with no local cash. The rates in these locations are poor even at entirely honest operators.
Pedestrian tourist streets and old towns. Prague, Budapest, Rome, Istanbul, Bangkok, and Marrakesh all have well-documented clusters of exchange windows aimed squarely at visitors. The good counters and the bad ones sit on the same block and look identical.
Anywhere someone approaches you first. Legitimate financial businesses do not solicit customers on the pavement. A person who opens with a rate is not offering you a service.
And the least likely place: a bank machine attached to a bank. The exchange rate on an ATM withdrawal is applied by the card network, not by whoever is standing in front of you, which is why we treat it as the default and everything else as a fallback. Our guide to where to get foreign currency ranks the options, and what to do with leftover currency covers the other end of the trip, where a second round of bad rates usually waits.
Frequently Asked Questions
How do I know if a currency exchange rate is fair?
Look up the mid-market rate on your phone before you approach the counter, then compare it to the number the counter is actually offering you, not the number on the board. A spread of roughly two to four percent below mid-market is normal for a legitimate high street exchange. Ten percent or worse means you are paying a tourist premium. The single most reliable test is to ask how much local currency you will receive in hand for a specific amount, in writing, before handing anything over.
Why is the rate I get always worse than the rate on the sign?
Exchange boards show two columns, buy and sell, and tourists routinely read the wrong one. The favorable-looking number is usually the rate at which the counter buys the currency you want, not the rate at which it sells it to you. Some boards also print the best rate in large type and reserve it for transactions above a high threshold, with the rate for ordinary amounts in small print underneath.
Is it safe to exchange money with a street money changer?
Generally no. Street changers offer rates that look better than any shop precisely because the transaction ends before you can verify it. The common outcomes are a short count, a stack padded with low-denomination or withdrawn notes, a distraction and a swapped bundle, or counterfeit currency. In countries with a parallel exchange market the calculation is more complicated, but the safe version of that trade is a licensed office, not a person on a corner.
What should I do if I think an exchange counter short-changed me?
Do not leave the counter. Count the notes in front of the teller before you step away, because almost no dispute is winnable once you have walked off. If the amount is wrong, say so immediately, keep your receipt, and ask for the transaction to be reversed. If the counter refuses, photograph the receipt, the rate board, and the shop front, and report it to the local tourist police or the shop's licensing authority, which in many countries is displayed on the wall.
What is the safest way to get local currency as a tourist?
A withdrawal from a bank-branded ATM using a card with no foreign transaction fee is usually both the cheapest and the least manipulable option, because the exchange rate is applied by the card network rather than negotiated at a counter. Ordering a modest amount of local currency before departure removes the pressure to accept a bad rate on arrival. Counter exchange is best treated as a backup rather than a plan.
The Bottom Line
Currency exchange scams survive because they feel like paperwork rather than theft. Nobody grabs your bag. A number is presented, a stack is counted quickly, a receipt appears afterward, and by the time the arithmetic makes sense you are two streets away and no longer certain what you were told.
The countermeasure is not suspicion of everyone, it is a routine you run without thinking: check the real rate, ask for the total in hand, count at the window, keep the receipt, and never do any of it in a hurry. Run that routine and the entire category of trick stops working, because every one of them depends on you skipping a step.
The structural fix is to need the counter less often. A Wise card converts at the mid-market rate with the fee stated separately, so there is no spread to misread, and a modest amount of local currency ordered before you fly means you never negotiate at an arrivals hall while jet-lagged. Compare the rest of the options on our travel cards page.