You may think you scored a deal on your hotel and rental car—but have you really come out ahead? In some popular destinations, tourism taxes are adding big bucks to your daily vacation spend.

According to an annual study by the Global Business Travel Association (GBTA), tourism-related taxes added a whopping 58 percent to American travelers' vacations this past year. That's due  to a rise in “discriminatory travel taxes”—the extras that are shouldered mainly by out-of-towners. These include state and local levies on car rentals, hotel stays, and restaurant meals.

Before we get to the naughty list, let’s start with destinations whose tax policies are nice, relatively speaking. Kudos to a trio of Florida cities—Fort Lauderdale, Fort Myers, and West Palm Beach—for imposing the lightest tax burden on travelers, at an average of $22.61 a day. Honorable mentions go to tourist-friendly metro areas bolstered by mouse ears: Orange County, California (home of Anaheim-based Disneyland), and Orlando.

So then, where does the taxman hit vacationers the hardest? These are this year’s 10 most tax-happy destinations, ranked by the average traveler’s daily outlay in tourism taxes: