UPDATE: As of March 29, 2013 this plan has passed both the House and Senate and is expected to be signed into law by the Governor.
This week, the Maryland House will vote on a plan to raise and reform the state’s gasoline tax. The plan is very similar to one proposed by Governor Martin O’Malley that our partner organization, the Institute on Taxation and Economic Policy (ITEP), analyzed when it was released two weeks ago.
An updated chart from ITEP shows that Maryland’s flat gas tax has long been declining as inflation has chipped away at its value. If the legislature does not raise the gas tax, ITEP projects that by 2014 Maryland’s gas tax rate will reach its lowest (inflation adjusted) level in 91 years. Only in 1922 and 1923 did Maryland levy a lower gas tax.
Moreover, the gas tax increase under consideration in the House, like the one proposed by the Governor, is actually very modest. The plan (which would tie the gas tax to both inflation and gas prices) would result in roughly a 12 cent increase by 2015. That’s significantly less than the nearly 16 cent increase that ITEP found would be needed to return Maryland’s gas tax to its purchasing power as of 1992, when it was last raised. Taking an even longer-term perspective, ITEP finds that Maryland’s inflation-adjusted gas tax rate has historically averaged 41.1 cents per gallon. If the House plan is enacted, the inflation-adjusted rate over the next decade would average just 32.8 cents.