Foreign transaction fees typically include both an issuer and card network fee. The total cost of these fees is usually between 2.7 percent to 3 percent depending on the card issuer. If you’re curious about your credit card’s foreign transaction fee, you can find the details in your cardholder agreement. While this may not seem like a big charge, keep in mind that foreign transaction fees can add up fast. If you travel often and spend thousands of dollars overseas each year, you should strive to minimize foreign transaction fees or avoid them altogether.