TN HB1683

Directs the Tennessee Department of Transportation to study transportation infrastructure needs, costs, and funding sources for 2028, 2050, and 2075, with findings due to legislative committees by January 1, 2028

Redirects 95.397% of state sales tax revenue from new and used motor vehicles and tires to the highway fund, effective October 1, 2026

Allocates 4.603% of motor vehicle and tire sales tax revenue to incorporated municipalities, distributed monthly based on population

Deposits all revenue from the 2.75% sales tax on vehicle purchases between $1,600 and $3,200 into the highway fund

Exempts revenue from prior sales tax increases (1992 education funding and 2002 rate increase to 7%) from the new allocation formula