As if travel wasn't expensive enough, Canadians heading to Hawaii will soon have to shell out just a little bit more on their next vacation. Starting in 2026, Hawaii will be the first U.S. state to charge visitors a climate impact fee or "green fee." Tourists booking hotels or short-term rentals in Hawaii will have to pay the added fee starting next year. From January to June, over 226,000 Canadian tourists visited the state, according to the Hawaii Tourism Authority. Other places charging tourists an environmental tax include the Mexican state of Baja California Sur, known for its nightlife, marine life, and luxury resorts.