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Environmental, Energy, and Transportation Taxes

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2026 State Tax Competitiveness Index 2026 State Tax Rankings

2026 State Tax Competitiveness Index

The State Tax Competitiveness Index enables policymakers, taxpayers, and business leaders to gauge how their states’ tax systems compare. While there are many ways to show how much state governments collect in taxes, the Index evaluates how well states structure their tax systems and provides a road map for improvement.

122 min read
digitalization of the economy, international tax treaty system, OECD digital economy

Sound Tax Policy Can Withstand Creative Destruction

Creative destruction—coined by famed economist Joseph Schumpeter—is the idea that new innovations disrupt and “destroy” existing economic structures as they create better and more efficient products and processes.

4 min read
Dr. Sergio Vasques

Fiscal Forum: Future of the EU Tax Mix with Sérgio Vasques

Sean Bray interviewed Dr. Sérgio Vasques, Professor of Tax Law at the Catholic University of Lisbon and former Portuguese Secretary of State for Tax Affairs, about the future of the EU tax mix.

7 min read
earmark excise tax revenue excise tax revenue in europe, 2025

What Should Be Done with Excise Tax Revenue?

Excise taxes generate more than two trillion dollars worldwide each year. While tying an excise tax revenue source to a specific expenditure program can be a best practice, the efficiency depends on the revenue source, the spending program, and why the excise tax was implemented in the first place.

6 min read
windfall profits taxes in europe, 2025

Windfall Profits Taxes in Europe, 2025

As energy prices have declined, European countries have switched the focus of their windfall profits taxes—a one-time tax levied on a company or industry when economic conditions result in large, unexpected profits—from energy providers to the banking and financial sector.

6 min read
2025 state gas taxes or state gas tax rates by state, 2025 fuel taxes

Gas Taxes by State, 2025

California levies the highest tax on gasoline at 70.9 cents per gallon (cpg), followed by Illinois at 66.4 cpg and Washington at 59.0 cpg.

8 min read
electric vehicle EV taxes by state, 2025 ev credits and ev fees

Electric Vehicle Taxes by State, 2025

As the market share of electric vehicles (EVs) on the road grows, the gas tax’s ability to fund road projects and decrease traffic congestion erodes. Both federal and state real tax revenue per vehicle mile traveled has been on a steady decline for decades, creating a fiscal gap for road expenditures even as the demand for road infrastructure improvements has grown.

5 min read
Gas Taxes in Europe 2025 Gas Taxes and Diesel Taxes in Europe Fuel Tax Rates on unleaded petroleum

Diesel and Gas Taxes in Europe, 2025

Fuel taxes continue to be a central policy consideration for European countries amid geopolitical conflicts, increased emphasis on environmental policy, and economic conditions experienced by average consumers.

5 min read