Seven states this year have increased taxes on motor fuel to support needed transportation investment, with several others still considering legislation to increase transportation funding. Transportation Investment Advocacy Center (TIAC) staff have prepared in-depth case studies on how these states successfully increased revenue, what they did to accomplish their goal, and common trends between the recent initiatives. Case studies include the history of the state gas tax, the demonstrated need for an increase, the breakdown of the legislation and how it was passed, campaigns and strategies for and against the bills, and more.

The five new case studies include:

  • Georgia 2015 Gas Tax Increase Case Study: Legislation approved May 4, 2015, to remove the variable-rate motor fuel tax and institute a flat cents-per-gallon increase, which will be indexed, as well as raise various transportation-related fees.
  • Iowa 2015 Gas Tax Increase Case Study: Senate File 257 was signed into law on Feb. 24, 2015, in order to increase the state gas tax by 10 cents-per-gallon.
  • Idaho 2015 Gas Tax Increase Case Study: Legislation approved April 21, 2015, in order to increase the state gas tax by 7 cents-per-gallon, raise vehicle registration fees, and institute a fee on electric and hybrid cars in order to generate new funding for the state’s roads and bridges.
  • South Dakota 2015 Gas Tax Increase Case Study: Senate Bill 1 was approved on March 30, 2015, in order to increase the state gas tax
  • Utah 2015 Gas Tax Increase Case Study: A bill to increase the state gas tax by 5 cents-per-gallon and create a 12 percent tax on the average wholesale price of fuel, to replace the state’s flat gas tax once the price of fuel reaches $2.45 per gallon. Utah HB 362 was signed into law on March 27, 2015.

An analysis of Nebraska’s legislation to increase the state gas tax by 6 cents-per-gallon is also available. A case study on Washington state’s 11.9 cents-per-gallon increase will be published once the bill is signed into law. To view other case studies from previous campaigns, visit the ‘Campaign Case Studies’ tab on the TIAC website.

TIAC attempts to track all ongoing state and local transportation funding and financing developments in real time and reports on them frequently through our Blog. If you would like to contribute information to this effort, please contact the TIAC staff.