If you have a new car, you’ve probably wondered how much your car tax will be. You can avoid sticker shock by researching the tax on your new car. Vehicle tax is calculated on the selling price of the vehicle, plus the documentation fee. Aftermarket options and accessories are also taxed. The tax rate for most vehicles is $4.57 per $100 of assessed value, but there are exceptions. If you’re not sure about the tax…"How Much Is My Car Tax?"