Recent oil and gas tax proposals in the states

The status of some states' proposals to change oil and gas severance taxes since 2011:

-- ALASKA: Governor's proposed oil tax cuts failed to gain approval.

-- FLORIDA: Oil production taxes reduced to offset technological costs of extraction.

-- IDAHO: Replaced an existing oil tax with a 2.5 percent conservation tax on the market value of all oil and gas produced.

-- MARYLAND: Two proposals to raise the natural gas severance tax died.

-- MISSISSIPPI: Proposal died that would have changed the way oil taxes are distributed at the state and county levels.

-- NORTH CAROLINA: Environmental agency ordered to study economic and tax implications of oil and gas exploration.

-- NEW MEXICO: Proposed increases on oil and gas production died.

-- OHIO: Governor's proposed severance tax increase on oil, natural gas and natural gas liquids is in negotiation as session continues.

-- OKLAHOMA: Changed tax exemptions on new horizontally drilled and deep wells.

-- PENNSYLVANIA: Attempts to craft a new production tax on natural gas failed to gain approval, as lawmakers opted to impose impact fees instead.

-- VIRGINIA: A proposal to retroactively enact local notification and appeals provisions for coal, gas and road improvement taxpayers back to 2008 fizzled.

-- WEST VIRGINIA: Tax increase on natural gas failed to gain approval, but permit fees were raised.

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Sources: National Conference of State Legislatures, AP research