Welcome to the UNC Tax Center’s Tax Data website, DaTax, a one stop shop to easily locate free data resources to support your research agenda. We plan to update this page as more datasets are become available. If you would like to request that we add your dataset, please email Jeff Hoopes, UNC Tax Center Research Director at

Source Description Link
Tim Loughran and Bill McDonald, University of Notre Dame Software Repository for Accounting and Finance Company headquarters and other header information 10-Ks
Scott Dyreng States and countries in which a firm discloses material subsidiaries scraped from 10-Ks
Maximilian Todtenhaupt, Johannes Voget, Lars P. Feld and Martin Ruf, Ulrich Schreiber Broad set of capital gains tax rates for corporations
Maximilian Todtenhaupt and Johannes Voget Information on the taxation of cross-border dividends for a large set of countries from 2000-2015
OECD Tax rates and statistics in the OECD member and inclusive framework countries
Nonprofit Explorer (Ken Schwencke, Mike Tigas, Sisi Wei and Alec Glassford, ProPublica, and Brandon Roberts) Summaries of 3 million Form 990 tax returns from tax-exempt organizations and see financial details such as their executive compensation and revenue and expenses
Global MNC Tax Complexity Index (Deborah Schanz (LMU Munich), Caren Sureth-Sloane (Paderborn University) and team as part of TRR 266 Accounting for Transparency) Tax Complexity Index (TCI) measures the complexity of a country’s corporate income tax system as faced by multinational corporations. TCI cross-country data comprises a rich set of drivers and dimensions of tax code and tax framework complexity.
Internal Revenue Service Statistics of Income “SOI” Tables, articles, and data that describe and measure elements of the U.S. tax system
Deloitte Deloitte International Tax Source, “DITS” Tax rates and information for 66 jurisdictions worldwide and country tax highlights for more than 130 jurisdictions
W.E. Upjohn Institute for Employment Research (Timothy Bartik) Panel Database on Incentives and Taxes “PDIT” state and local tax incentives
Good Jobs First State and local job subsidies and ties between growth and jobs
US Census Annual Survey of State Government Tax Collections (STC)
Martin Jacob and Maximilian Todtenhaupt Bilateral data on withholding and dividend taxes on foreign portfolio investment, from