What happens when you use your credit card abroad
When you swipe your card in another country, your card network (Visa, Mastercard, American Express, or Discover) converts the foreign currency to US dollars using their own exchange rate, then adds a fee on top. That fee is called a foreign transaction fee, and it typically runs between 1% and 3% of the purchase amount. Some cards charge nothing; others charge flat fees per transaction instead of a percentage.
The conversion happens automatically — you do not choose the exchange rate or the fee. Your card issuer (your bank or credit card company) sets the foreign transaction fee, and the card network sets the exchange rate they use. Both of these are built into your statement before you see it.
A second charge can also appear: an international ATM fee, which applies when you withdraw cash from an ATM outside the US. This is separate from the foreign transaction fee and can range from $2 to $5 per withdrawal, plus the foreign transaction fee on top of that.
Key Takeaways
- Foreign transaction fees range from 0% to 3% of your purchase and are charged by your card issuer, not the merchant or the card network.
- The exchange rate used is set by your card network, not by the local bank or ATM, and you cannot negotiate it at the time of purchase.
- International ATM withdrawals trigger both a foreign transaction fee and often a separate ATM fee, making cash withdrawals the most expensive way to get foreign currency.
- Cards marketed as having no foreign transaction fees still charge the fee — they straightforward reimburse it to you, so read the fine print on what counts as a reimbursable purchase.
- Notifying your card issuer before travel is not required by law, but many issuers still recommend it to prevent fraud blocks on legitimate purchases.
How the exchange rate is determined
Your card network publishes an exchange rate every day, and that is the rate applied to your transaction. Visa, Mastercard, American Express, and Discover each set their own rates independently, and they can differ slightly from each other and from the mid-market rate you see on financial news sites.
The mid-market rate is the true wholesale rate banks use with each other. Card networks typically mark up their published rate by 1% to 2% above mid-market, which is how they profit from currency conversion. You cannot see this markup broken out separately on your statement — it is baked into the rate itself.
The conversion happens at the moment the transaction is processed, not at the moment you swipe. If you buy something on a Monday but the transaction does not process until Wednesday, the Wednesday rate applies. This delay is why the rate on your statement may differ from the rate you saw in the store.
Foreign transaction fees: what they cover and what they do not
A foreign transaction fee applies to any purchase made outside the United States, regardless of whether the merchant is a US company or a foreign one. If you book a hotel through a US website but the hotel is in Mexico, the fee still applies because the transaction is processed through a foreign payment system.
The fee does not explore to purchases made in US dollars, even if you are physically outside the country. If a US-based online retailer ships to your address abroad and charges you in dollars, no foreign transaction fee is added. The fee is tied to the currency conversion, not to your location.
Some cards waive the foreign transaction fee for certain categories — travel, dining, or all purchases — but only if you hold a premium version of the card, which usually requires an annual fee. Read your card's terms to see whether your specific card charges the fee and under what conditions it might be waived.
Comparing cards by their international fees
Cards fall into three categories based on international charges. The first group charges no foreign transaction fee at all — these are typically premium travel cards or cards from online banks. The second group charges a flat percentage (usually 1% to 3%) on every foreign transaction. The third group charges a flat fee per transaction (usually $2 to $5) instead of a percentage.
Which structure costs you less depends on your spending pattern. If you make many small purchases abroad, a flat percentage fee is usually cheaper than a per-transaction flat fee. If you make one or two large purchases, a flat fee might be lower. A card with no foreign transaction fee beats both if you travel frequently.
Your existing card's terms are in your cardholder agreement or on your card issuer's website. Search for "foreign transaction fee" or "international transaction fee" in the terms. If you cannot find it, call the customer service number on the back of your card and ask directly.
What to do before traveling internationally
Notify your card issuer of your travel dates and destinations before you leave. This is not legally required, but many issuers use it to distinguish legitimate purchases from fraud. If you do not notify them and make a large purchase abroad, the issuer may block the transaction as suspicious, leaving you without access to your card until you call to confirm.
Check whether your card has a chip (an embedded microchip, not just a magnetic stripe). Most countries outside the US use chip readers instead of magnetic stripe readers, and some merchants will not accept your card without a chip. If your card does not have one, contact your issuer and ask for a replacement card with a chip before you travel.
Bring a backup card from a different issuer if possible. If one card is lost, stolen, or declined, you still have another way to pay. Keep the backup card and your primary card in separate locations — one in your wallet, one in your hotel safe.
ATM withdrawals and cash advances abroad
Withdrawing cash from an ATM outside the US triggers both a foreign transaction fee (from your card issuer) and an ATM operator fee (from the bank or network that owns the ATM). The operator fee is usually $2 to $5 per withdrawal. Combined, you can pay 4% to 6% of the amount withdrawn just in fees.
A cash advance — borrowing money against your credit limit by withdrawing cash — is even more expensive. Cash advances typically charge a higher interest rate than regular purchases (often 20% or more), start accruing interest when ready with no grace period, and charge both a foreign transaction fee and a cash advance fee (usually 3% to 5% of the amount). Avoid cash advances unless you have no other option.
The cheapest way to get foreign currency is usually to exchange money at your bank before you travel, or to use a debit card at an ATM if your bank reimburses ATM fees. Check with your bank about their specific policies before you leave.
Disputing foreign transaction charges
If you see a foreign transaction on your statement that you did not make, or if you believe the exchange rate or fee was applied incorrectly, contact your card issuer's fraud department. You have the right to dispute the charge under the Fair Credit Billing Act, which gives you up to 60 days from the statement date to report it.
The issuer will investigate and either reverse the charge or explain why it was correct. If the charge was fraudulent, the issuer must remove it. If the charge was legitimate but you believe the fee was wrong, the issuer will explain their fee structure — but they are not required to refund a fee that was disclosed in your cardholder agreement.
Keep your receipts from international purchases, especially for large transactions. If a dispute arises, the receipt proves what you bought, where, and for how much in the local currency. This makes it easier for the issuer to verify the exchange rate used.
Frequently Asked Questions
Do I have to notify my bank before traveling internationally?
No, it is not required by law. However, many card issuers recommend it because they monitor for fraud. If you make an unusual purchase abroad without notifying them, they may block the transaction. A quick call before you leave can prevent this inconvenience.
Why is the exchange rate on my statement different from the rate I saw in the store?
The rate changes daily, and your transaction may not process until days after you make the purchase. Additionally, the rate your card network uses is slightly higher than the mid-market rate you see online. Both factors can cause a difference between what you expected and what appears on your statement.
Can I use my credit card to withdraw cash at an ATM abroad?
Yes, but it is expensive. You will pay a foreign transaction fee from your issuer, an ATM operator fee from the bank that owns the machine, and interest charges starting when ready. Using a debit card or exchanging currency before you travel is usually cheaper.
What if my credit card does not have a chip?
Many merchants outside the US will not accept a card without a chip. Contact your card issuer and ask for a replacement card with a chip before you travel. Most issuers replace cards for free, though it may take one to two weeks to arrive.
Are there credit cards with no foreign transaction fees?
Yes, some cards charge no foreign transaction fee at all. These are typically premium travel cards or cards from online banks. Check your card's terms, or if you travel frequently, research cards that advertise zero foreign transaction fees to see whether one fits your spending habits.