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An Act To Ensure Sustainable Infrastructure Funding
Be it enacted by the People of the State of Maine as follows:
Sec. 1.  36 MRSA c. 467  is enacted to read:
CHAPTER 467
INDEXING OF MOTOR FUEL TAX RATES
§ 3331. Annual adjustment of tax rates
 
1.  Generally.     Beginning July 1, 2015, the excise tax imposed upon internal combustion engine fuel pursuant to section 2903, subsection 1 and the excise tax imposed upon distillates pursuant to section 3203, subsection 1-B are subject to a rate of adjustment pursuant to this section. On or about February 15th of each year, the State Tax Assessor shall calculate the adjusted rates by multiplying the rates in effect on the calculation date by a fuel economy index as computed in subsection 2. The adjusted rates must then be rounded to the nearest 1/10 of a cent and become effective on the first day of July immediately following the calculation. The assessor shall publish the adjusted fuel tax rates and shall provide all necessary forms and reports to suppliers, distributors and retail dealers.
 
2.  Method of calculation; fuel economy index defined.     Except as provided in subsection 3, the fuel economy index is based on increases to federal fuel efficiency standards as set out in this subsection.
 
A.  Starting with fiscal year 2016 and every fiscal year thereafter, the fuel economy index is the percentage change in the corporate average fuel economy standard established by the federal Department of Transportation, National Highway Traffic Safety Administration, averaged for all classes of passenger cars and light trucks, between the model year of the current fiscal year and the model year corresponding with the upcoming fiscal year.
 
B.  The fuel economy index for fiscal year 2016 is 1.046.
 
3.  Maximum.     The fuel economy index established in subsection 2 may not exceed the Chained Consumer Price Index as defined in section 5402, subsection 1 for the calendar year ending on the December 31st immediately preceding the calculation date, divided by the Chained Consumer Price Index for the previous calendar year.
 
4.  Exclusion.     This section does not apply to internal combustion engine fuel purchased or used for the purpose of propelling jet or turbojet engine aircraft.
 
5.  Legislative review.     Starting in 2021 and in each odd-numbered year thereafter, the Department of Transportation shall submit a bill by the cloture date established for departments and agencies that suspends any adjustment in fuel tax rates in the upcoming biennium resulting from the operation of this section.
 
SUMMARY
This bill establishes a system of indexing Maine’s motor fuel excise tax rates, tying adjusted rate increases to federal fuel efficiency standards.