Editor's note: This post is legacy content. Frommer's no longer recommends purchasing traveler's checks, and the information has not been updated.
Traveler's checks are something of an anachronism from the days before the ATM (automated-teller machine) made cash accessible at any time. Traveler's checks used to be the only sound alternative to traveling with dangerously large amounts of cash. They were as reliable as currency, but, unlike cash, could be replaced if lost or stolen.
These days, traveler's checks seem less necessary because most cities have 24-hour ATMs that allow you to withdraw small amounts of cash as needed. However, you're likely to be charged an ATM withdrawal fee if the bank is not your own, so if you're withdrawing money every day, you might be better off with traveler's checks--provided that you don't mind showing identification every time you want to cash one. And out in the boondocks someplace where there are few (if any) ATMs, you will want the convenience and security of the checks.
You can get traveler's checks at almost any bank. American Express offers denominations of $20, $50, $100, $500, and (for cardholders only) $1,000. You'll pay a service charge ranging from 1% to 4%. You can also get American Express traveler's checks over the phone by calling tel. 800/221-7282 or online at travel.americanexpress.com/travel/personal/resources/essentials_advice; Amex gold and platinum cardholders who use this number are exempt from the 1% fee. AAA members can obtain checks without a fee at most AAA offices.
Visa offers traveler's checks at Citibank locations nationwide, as well as at several other banks. The service charge ranges between 1.5% and 2%; checks come in denominations of $20, $50, $100, $500, and $1,000. Call tel. 800/732-1322 for information. MasterCard also offers traveler's checks. Call tel. 800/223-9920 for a location near you.