When a card terminal or ATM abroad asks whether to pay in local currency or USD, the useful answer is slightly more precise: normally choose the currency in which the purchase or withdrawal is actually denominated, and decline conversion into your card’s billing currency.
That rejects dynamic currency conversion, or DCC. It does not guarantee the cheapest possible rate or eliminate every fee, but it usually prevents the merchant or ATM from inserting its own conversion offer into the transaction.
The quick decision rule
- Identify the transaction currency. This is the currency in which the merchant priced the purchase or the ATM will dispense cash.
- Check whether the screen is offering to translate that amount into your card’s billing currency. If so, normally decline the conversion and select the transaction currency.
For a €100 restaurant bill charged to a US card, that generally means choosing EUR rather than USD. At an ATM dispensing Polish złoty, choose PLN rather than a converted dollar amount.
Do not rely solely on the word local. A hotel, airline, cruise company or online merchant may legitimately price something in a currency other than the country’s legal tender. Some ATMs also dispense more than one currency. Read the original price and the three-letter currency code—EUR, USD, GBP, PLN and so on.
If USD is genuinely the transaction currency, choosing USD is not DCC. The real choice is transaction currency versus card billing currency, not local currency versus dollars in every conceivable situation.
What dynamic currency conversion actually does
DCC is an optional service through which a merchant or ATM converts a foreign transaction into the cardholder’s home or billing currency. Its appeal is obvious: the screen shows a familiar amount immediately. The catch is that the conversion can include an exchange-rate markup or additional fee determined through the merchant, ATM operator, acquirer or DCC provider.
Visa’s consumer guidance says a DCC offer should show both currency amounts, the exchange rate and any additional fees or markup. The customer must be allowed to accept or decline; the merchant or ATM should not choose on the customer’s behalf.
Mastercard’s current merchant guidance similarly requires an optional, clear and neutral offer with enough information for an informed decision. It identifies preselected conversion, unequal button prominence, red-and-green cues and promotional claims about a “best” rate as misleading or noncompliant presentation.
DCC is therefore not automatically illegal or fraudulent. Properly disclosed, it is an optional conversion service. It is also a service travelers can normally decline—and one that may cost more than letting their card arrangements handle the conversion.
Not every price displayed in your home currency is DCC. A merchant can genuinely offer multicurrency pricing before it knows which card you will use. DCC generally appears after the card or its billing currency has been identified.
DCC, card conversion and foreign-transaction fees are different charges
International card costs make more sense when separated into distinct layers:
- Merchant or ATM DCC: The seller or ATM converts the transaction into the card’s billing currency using its offered rate and disclosed markup or fees.
- Card-network or issuer conversion: If you reject DCC, the transaction continues in its original currency. The network, issuer or another arrangement under the card agreement determines how it is converted for billing.
- Foreign-transaction fee: The card issuer may add a separate fee under the account terms.
- ATM fees: The ATM operator and the traveler’s own bank may impose separate access, withdrawal or international-use charges.
Rejecting DCC affects the first layer. It does not promise that the issuer’s rate will be the market’s best, and public Visa and Mastercard calculators provide indicative rather than guaranteed final rates.
It also does not remove a foreign-transaction fee. For US cards, federal regulatory commentary recognizes that such a fee may apply to foreign-currency purchases, USD transactions processed outside the United States or transactions with a foreign merchant. Paying a foreign merchant in dollars can therefore leave you with both DCC’s conversion cost and an issuer fee.
Check the current card agreement before traveling. Fee structures vary by product, and a card advertising no foreign-transaction fee does not necessarily eliminate ATM operator charges, bank withdrawal fees or cash-advance costs.
At an ATM, separate the conversion prompt from the access fee
ATMs are where several unrelated charges tend to arrive wearing the same trench coat. A machine may first disclose an operator fee and later offer to convert the withdrawal into your billing currency. These are separate decisions.
If the ATM charges an access fee, declining DCC does not remove it. Your bank may also impose an out-of-network or international withdrawal fee. If you use a credit card rather than a debit card, the withdrawal may be treated as a cash advance under your card agreement.
For the conversion decision, focus on the currency being dispensed or the ATM’s stated transaction currency. Screens may use wording such as “accept conversion,” “continue without conversion” or “guaranteed rate.” Some warn that declining means the final exchange rate is unknown. That warning does not make the ATM’s conversion cheaper; it means your card arrangements will determine the eventual billed amount.
So, should you accept ATM conversion? Normally, no. Select the cash or transaction currency and decline conversion into your billing currency. Then decide separately whether the disclosed ATM access fee is acceptable before completing the withdrawal.
Never assume the green, highlighted or “continue” button is the right choice. Read the amount and currency code attached to each option.
What a conversion markup can look like
There is no reliable universal DCC markup. It varies by provider, merchant, ATM, currency and date, so claims that DCC “always costs 3%” or that ATMs invariably add 8% are not defensible.
A dated illustration still shows how the arithmetic works. The European Central Bank reference rate for October 21, 2026 was €1 = $1.1234. At that reference rate:
- €100 corresponded to a reference value of $112.34.
- A hypothetical DCC offer priced 8% above that reference would be $121.33.
- The difference would be approximately $8.99.
The 8% figure is purely illustrative, not a typical or predicted markup. ECB reference rates are also not card transaction rates, so $112.34 should not be treated as the amount a particular issuer would necessarily bill.
The point is narrower: a familiar dollar total can conceal a meaningful markup. Judge the offer by its disclosed rate and cost—not by the psychological comfort of seeing your home currency.
Within the EU’s covered transactions, DCC providers must express applicable conversion charges as a percentage markup over the latest available ECB euro reference rate and show relevant currency totals. That improves comparability, but the regulation does not set a maximum DCC markup.
Mobile wallets do not make the choice disappear
Paying through Apple Pay, Google Pay or another card-based wallet does not inherently guarantee that DCC or foreign-transaction fees will vanish. A wallet generally presents tokenized credentials linked to an underlying card; it does not by itself establish which party performs the currency conversion or change the card’s fee terms.
The precise behavior can depend on the merchant, terminal, processor, network, wallet and underlying card. Review the amount and currency shown before authenticating a contactless payment. If a terminal presents a conversion choice, the same practical rule applies: normally choose the merchant’s transaction currency rather than a translated amount in the card’s billing currency.
Some contactless transactions, including many fixed-fare transit payments, may not present an interactive currency choice at all. The absence of a prompt is different from accepting DCC.
What to do if conversion was applied without consent
If a merchant selects your billing currency after you requested the transaction currency—or an ATM processes DCC despite your selection—preserve the evidence:
- Keep the receipt and ATM slip.
- Photograph the terminal or ATM screen when it is safe and permitted.
- Note the transaction currency you requested and what the staff member or machine displayed.
- Check the pending and posted transaction details.
- Contact the issuer promptly and describe the problem as conversion applied without active consent or an incorrect currency transaction.
Current Visa rules recognize an incorrect-currency dispute when DCC occurred without express agreement or the cardholder was refused the relevant merchant or ATM currency. Mastercard guidance also provides chargeback rights where no choice was given or local currency was selected but billing currency was processed.
Those rights do not necessarily mean reversing the entire value of legitimate goods or cash received. The dispute may concern the incorrect currency or conversion difference. Outcomes and deadlines vary by network, card type and jurisdiction.
US credit-card users should act especially quickly: the Consumer Financial Protection Bureau advises sending written notice within 60 days after the statement containing a billing error was sent to preserve federal billing-dispute rights.
When deciding which currency to choose when paying abroad, ignore the comforting home-currency total and identify the original transaction currency. Normally choose that currency and decline the merchant’s or ATM’s conversion.
Then check the other costs separately: your card’s foreign-transaction fee, the ATM operator fee, your bank’s withdrawal charge and any cash-advance terms. Declining DCC removes one avoidable decision from the stack—not every possible international payment cost.
