“Most rental car companies allow cross-border travel to Canada, including:
Be aware that each company has their own rules and regulations. Some companies only allow certain vehicles to be used for cross border travel, while others don’t allow one-way travel.
When you’re at the rental counter, you should also inquire about a Canadian non-resident insurance card. When you get to the border, the border agent will ask for this, as well as your driver’s license and passport.