They have indeed. If you reside in Denmark, you are required to have Danish license plates (and thus to pay the aforementioned tax). Even if you have your offic

They have indeed. If you reside in Denmark, you are required to have Danish license plates (and thus to pay the aforementioned tax). Even if you have your official residence in Sweden, but you stay the night in Denmark a little too often, the tax authorities will deem that as residing in Denmark. The chances of getting caught are high. If someone who dislikes you notices a car with Swedish plates staying the night too often, they might report you, and the fines for violation are terrifying, the tax itself with 50% on top if memory serves.