You've put the time in to plan your perfect summer getaway. All the arrangements have been made -- an economic hotel, well-timed pit stops, and cultural oddities to keep the kids amused. But have you thought about the best way to pay the tab for meals, museum tickets, rental cars, and kitschy mementos?

You might be surprised by how much how you pay can pad your tab.

Paper or plastic?
There are many ways to pay when you're on the road -- traveler's checks, credit cards, ATMs, cash. The key factors to consider are cost, convenience, and safety.

  • For convenience and safety, credit cards are the way to go (particularly if you don't want to ruin the perfect line of your suit with a money belt stuffed with cash).
  • Debit cards are also convenient and relatively safe to use (as long as you keep your PIN private), but it may cost you a few bucks to use an ATM that's not at one of your bank's branches.
  • Cash is cheap, but not necessarily safe.
  • And traveler's checks can be inconvenient and carry fees to purchase and exchange.

But before you whip out the plastic, consider this. If you're traveling overseas, brace for an unpleasant memento from your travels once your credit card bill arrives: currency conversion fees (typically 1% of your total transaction) and foreign transaction fees (which can run an additional 1% to 3%). (The fee is based on a percentage of the U.S. dollar value of your overall purchase.)

The cost of using credit overseas
Before you leave home for exotic locales, call your credit card company and find out what it charges for overseas transactions. Don't reach for your wallet until you know how much your lender charges to use its card.

For example, American Express (NYSE:AXP) doesn't charge a foreign transaction fee, but it does carry a 2% currency conversion fee. Capital One (NYSE:COF) picks up the tab for both, as does Discover (though the card is not as widely accepted overseas as Visa and MasterCard (NYSE:MA)).

The folks at recently surveyed major card companies and came up with this list -- from lowest to highest -- of foreign transaction fees for issuers.

  • Capital One: 0% transaction fee. (Capital One does not impose a fee, and it also eats the 1% fee that Visa or MasterCard impose.)
  • Discover: 0% transaction fee. (Note, however, that Discover is accepted on a limited basis outside of North America.)
  • Washington Mutual (NYSE:WM): 1% transaction fee.
  • American Express: 2%.
  • Pulaski Bank: 2%.
  • Barclays/Juniper Bank: 2% to 3%, depending on card.
  • Bank of America (NYSE:BAC): 3%.
  • Chase (NYSE:JPM): 3%.
  • Citibank (NYSE:C): 3%.
  • GE (NYSE:GE) Money: 3%.
  • HSBC (NYSE:HBC): 1% to 3% depending on card.
  • U.S. Bank (NYSE:USB): 3%.
  • Wells Fargo (NYSE:WFC): 3%.

The upside and downside of debit cards
A prepaid debit card can help you avoid some of these fees, but relying solely on this mode may leave you in a pinch, as not all vendors are set up to accept them.

No matter where your travels take you, if you are using an ATM, you can limit the number of times you pay the out-of-network fee by withdrawing a lot of cash at once -- though carrying a wad of cash puts you at risk for theft. If you carry American dollars or traveler's checks overseas, you might not get as good an exchange rate as you do via your credit card.

Don't get stuck doing dishes to pay for dinner
The best strategy is to have a few payment options at your disposal at all times. If you find a bank that offers a great exchange rate and low fees on traveler's checks, consider using them to pay for big purchases (such as your hotel bill). On smaller day-to-day purchases, withdraw a few days' worth of funds at once to cover costs and put the extra money in your hotel safe.

Alert your bank and credit card company before you travel -- domestically or overseas. Banks and credit card companies are on high alert for fraud, and sometimes they have a hair-trigger reaction to unusual account activity. After an initial withdrawal at an ATM at the Paris airport, my bank cut me off because I didn't let them know that I was taking a well-deserved break overseas. Thankfully, a quick phone call remedied my Parisian payment problem.

And just to be safe, if you're separated from your bags or lose your purse or wallet, keep copies of everything in your wallet -- insurance cards, driver's license, credit/bank cards, passport, and contact information -- on you and in your luggage so you don't have to bus tables to pay for your crepes.

Washington Mutual, US Bancorp, JP Morgan Chase, and Bank of America are all Income Investor recommendations. MasterCard is an Inside Value pick.

Dayana Yochim test-drives travel mishaps so that you don't have to. She doesn't own shares of the companies mentioned in this article. But she has lost her wallet before boarding a plane to Italy, had her ATM access cut off at Charles DeGaulle Airport, and talked her way out of several cancellation fees. She shares her hands-on approach to finances as the co-advisor for the Motley Fool Green Light service. A free 30-day pass gets you access to $450 of monthly money-saving/money-making investments and simple financial moves, as well as hands-on "Get It Done" guides for directions on everything from investing when you're short on time and money to setting up a no-brainer estate plan.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.