Whether you get charged for using your credit card in Mexico depends on your specific bank's fee structure. Most standard credit cards charge a Foreign Transaction Fee (typically 1% to 3%) for every purchase made outside your home country. Additionally, if a merchant offers to charge you in your "home currency" (a practice called Dynamic Currency Conversion), you will often be hit with a hidden, unfavorable exchange rate; it is almost always better to choose to be charged in Mexican Pesos (MXN) to let your bank handle the conversion. In 2026, many "travel" cards (like those from Chase, Amex, or Capital One) offer no foreign transaction fees as a core benefit. Before your trip, you should check your card's terms and set a "travel notice" if required by your bank. Also, be aware that while cards are widely accepted in tourist hubs like Cancun or Mexico City, you will still need cash for smaller vendors, taxis, and tips in more rural areas.