Tax Foundation
Independent tax policy research, datasets, and explainers in one hub.
Tax Foundation is a nonprofit research organization focused on tax policy in the United States, Europe, and other major economies. Its site combines long-form analysis, policy commentary, data dashboards, tax maps, competitiveness indexes, calculators, and educational explainers for people following tax debates and reforms.
Why it stands out
- Covers federal, state, global, and EU tax policy from one organization rather than splitting them across separate sites.
- Maintains recurring benchmark projects such as the State Tax Competitiveness Index and International Tax Competitiveness Index.
- Pairs policy analysis with practical data tools, including state and country explorers, tax maps, and rate tables.
- Includes educational material for non-specialists alongside detailed research for policy professionals.
Good to know
- It is a policy research site, not a tax filing service or source of personalized tax advice.
- The organization has stated tax policy principles, so users should treat its analysis as research from a defined policy perspective rather than neutral government guidance.
- For legal compliance, official IRS, state revenue department, or national tax authority sources should be checked directly.
Under the radar: For quick comparisons, start from the Data menu’s State Data Explorer or Country Data Explorer rather than searching through individual annual reports.
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Policy analysts, journalists, and legislative staff can use it to compare tax systems and understand reform proposals with supporting data. Check current federal income tax brackets, state tax rates, corporate tax rates, and international comparisons. Follow analysis of tariffs, property taxes, wealth taxes, deficits, and business investment policy. Use tax glossaries, primers, and explainer videos to get up to speed on unfamiliar tax concepts. Reference recurring indexes and scorecards when comparing state, national, or European tax competitiveness.
Research reports, blog commentary, testimony, op-eds, podcasts, expert profiles, tax education materials, federal and state data resources, international and European tax datasets, interactive maps, competitiveness indexes, and a 2026 tax calculator.
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Similar sites elsewhere
- Tax Policy Center — taxpolicycenter.org
- Institute on Taxation and Economic Policy — itep.org
- OECD Tax Policy — oecd.org/tax
- Congressional Budget Office — cbo.gov