Heavy Truck Tax Fairness Act of 2012

Heavy Truck Tax Fairness Act of 2012 - Amends the Internal Revenue Code to: (1) repeal the excise tax on heavy trucks and trailers sold at retail, (2) increase the rate of tax on diesel fuel or kerosene to 30.7 cents per gallon, and (3) impose a floor stocks tax with respect to certain taxable fuels.