Data & Code

Datasets and replication code associated with my research. If you have questions about any of the materials below, please feel free to contact me.

Tax Effectiveness Scores

Schwab, C. M., Stomberg, B., & Williams, B. M. (2022). Effective tax planning. The Accounting Review, 97(1), 413–437.

1 Year Scores (xlsx) 5 Year Scores (xlsx) SSW 2022

This dataset is constructed using the methodology of Schwab, Stomberg, and Williams (2022) over the period 1994–2024 using recent Compustat data. Tax haven data for fiscal years 2020 and beyond are obtained from the OpenSanctions US CorpWatch dataset.

Last updated: June 2026.