Comptroller of Maryland. Serving the People. Peter Franchot, Comptroller
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FAQ: Transportation Investment Act

How will the CPI tax increase be computed?

The CPI tax increase will be computed by the Comptrollerís Office. The percentage of growth will be determined by averaging the CPI for the 12 months preceding April 30th to the average index for the prior 12 months. This rate is multiplied by the current motor fuel tax rate to determine the increase in the motor fuel tax.

This increase took effect July 1, 2013, and may increase each July 1st thereafter. However, the motor fuel tax increase cannot be greater than 8% of the motor fuel tax rate effective in the previous year. Also, if there is a decrease or no growth in the CPI, the motor fuel tax will remain the same.

Links for Transportation Investment Act FAQs
Business Tax Types
Motor Fuel Tax
Tax Information
Frequently Asked Questions
Transportation Investment Act FAQs
  1 - What is the Transportation Infrastructure Investment Act of 2013?
  2 - What motor fuels are affected by this tax increase?
  3 - How is the motor fuel tax increased?
  4 - How will the CPI tax increase be computed?
  5 - How does the average increase in the retail sales price of gasoline affect the tax increase?
  6 - What are the percentage changes for the sales and use tax equivalent rate and dates the tax will change?
  7 - Can I use my sales tax exemption with the sales and use tax equivalent rate?
  8 - What is the inventory adjustment?
  9 - Where can I find additional information?
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