Traveling overseas can be expensive enough with rising airfares, expensive hotels and fluctuating exchange rates.
But for many travelers there is another hidden expense: credit card fees of up to 3 percent, simply for swiping your card outside the country.
It might only be a dollar here and a dollar there, but on a $4,000 family vacation to Europe those fees would add an extra $120 to the trip's cost.
Using a credit card or withdrawing cash from an ATM usually provides the best exchange rate. But the fees can quickly pile up. Not every bank charges such high fees, leaving it up to travelers to do their homework -- and pick the right card -- well in advance of their trip.
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There are actually two fees charged for using a credit card, and this is where it pays to be a savvy consumer. The first is a 1-percent transaction fee that Visa, MasterCard and other card processors levy to actually convert euros to dollars or pesos to dollars. There is -- almost -- no way to avoid this fee. (We'll tell you the few exceptions in a minute.)
The second fee is the one that can be avoided. This is a fee that individual banks that issue credit cards levy. It can be as high as an additional 2 percent.
"They're charging an extra 2 percent for absolutely no reason whatever, ever, just because they believe they can," said Gary Steiger, who runs the website Free Frequent Flyer Miles, which tracks credit card, banking and mileage program offers.
But some banks don't charge that extra 2-percent fee and a handful go one step further, taking a loss on the 1-percent fee from Visa and MasterCard, giving consumers no foreign transaction fees.
Bill Hardekopf, CEO of LowCards.com, advises travelers to call their banks before going overseas to get an understanding of the possible fees.
"That way you don't get surprised when you get home and look at your credit card bill," Hardekopf said.
(There is a very lengthy discussion about what card is the best at the travel forum site FlyerTalk.)
Hardekopf says Bank of America, Chase and Citi all charge 3 percent fees. American Express charges 2.7 percent. Discover charges 2 percent, but isn't as widely accepted overseas.
"It might be well worth investigating getting that card that doesn't charge you that international transaction fee," Hardekopf said.
Ed Perkins, an editor at large with SmarterTravel, says that for most travelers it is probably not worth the pain and hassle of getting a new card. But, if you are a frequent traveler or about to take a big trip overseas, he suggests a Capital One card.
Perkins says that when picking a card, travelers should avoid those where the banks add on that extra 2 percent.
"The additional 2 percent is something that your own bank gets for essentially doing nothing because Visa or MasterCard has already done the conversion," he said.
So by now do you want to just go to the ATM and pay for everything in cash? Well, it's not that simple. Credit cards offer convenience, purchase protection and allow travelers to move about safely without carrying large amounts of cash.