Gas prices have nearly doubled since the Iran conflict started in February, and for the average family, that means spending an extra $200 a month on fill-ups. To try to ease that burden, some politicians are pushing to lower state gas taxes and least freeze tax increases. It’s a move that feels logical, but unfortunately doesn’t automatically lead to lower prices. “A common misconception about gas taxes is that they are the reason for rising gas prices,” says cost-of-living and home financial expert Cody Schuiteboer. “However, crude oil prices, refinery capacity, regional requirements and fuel blends have a much higher impact on pump prices.” Here’s what to know about gas taxes, including their pros and cons, and how much a tax reduction might save you at the pump. What Is the Gas Tax? A gas tax is a fee added to the price of gasoline by federal and state governments. The federal tax has been 18.4 cents per gallon (24.4 cents per gallon for diesel) since October 1993.…