7 states raise gas taxes on July 1, affecting both road usage and environmental fees.

7 states will raise gas taxes on July 1, affecting both road usage fees and environmental fees. The states with tax increases include California, Colorado, Illinois, Indiana, Missouri, Nebraska, and Virginia. Gas prices will increase by varying amounts, ranging from 0.5 to 2.5 cents per gallon. California currently has the highest state gas tax at 69.8 cents per gallon, while Alaska has the lowest at 9 cents per gallon.