Tax Planning Knowledge Diffusion — John Manuel Barrios

Authors: John Manuel Barrios, John Gallemore

Published in: Management Science, Vol. 70, No. 2 (February 2024), pp. 1194-1215

Research Area: Taxation & Regulatory Economics

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Abstract

We examine how tax planning knowledge diffuses across firms through the labor market. Using comprehensive data on executive movements and tax planning outcomes, we investigate whether firms learn tax strategies from competitors by hiring employees who previously worked at firms with superior tax planning practices.

Our evidence suggests that worker mobility is an important channel for knowledge transfer in tax planning. Firms that hire executives from highly effective tax planning firms subsequently adopt more sophisticated tax strategies and achieve better tax outcomes. This effect is strongest when the hiring firm operates in the same industry as the origin firm, suggesting that industry-specific tax knowledge transfers most effectively through labor market channels.

Key Findings

Worker Mobility Effect

Firms hiring executives from high-performing tax planning firms subsequently improve their own tax outcomes, suggesting direct knowledge transfer through labor markets.

Industry Specificity

Knowledge transfer is strongest within industries, indicating that tax strategies are industry-specific and require contextual understanding for effective implementation.

Quantifiable Impact

Hiring from a high-tax-expertise firm is associated with measurable improvements in effective tax rates and tax planning sophistication.

Spillover Effects

Tax knowledge diffusion through worker mobility creates positive spillovers that benefit not only the hiring firm but also competitors in the labor market.

Key Results & Methodology

Figure 1: Effect of Hiring from Tax-Aggressive Firms on Destination Firm's Effective Tax Rate

Interpretation: The left panel shows that hiring an employee from a tax-aggressive firm reduces the destination firm's cash effective tax rate (ETR) by 2.0 to 3.7 percentage points, depending on model specification. All effects are statistically significant (*** p<0.01 or ** p<0.05). The right panel demonstrates robustness across alternative specifications and definitions of "tax-aggressive" status, with coefficients ranging from -2.2% to -3.7%. This suggests strong and consistent evidence that tax planning knowledge transfers through employee mobility.

Figure 2: Labor Market Channel for Tax Planning Knowledge Diffusion

Mechanism: The diagram illustrates the four-stage process by which tax planning knowledge diffuses through labor markets: (1) Origin firm develops specialized tax expertise and achieves low effective tax rates; (2) Employee with this tacit knowledge is hired by destination firm; (3) Knowledge transfer occurs, enabling adoption of new tax strategies; (4) Destination firm achieves improved tax outcomes. Industry match and employee seniority moderate the strength of this effect.

Research Contribution

This paper contributes to our understanding of knowledge transfer mechanisms in corporate practice. We demonstrate that the labor market is a critical channel through which firms acquire and implement specialized expertise, particularly in technical domains like tax planning where knowledge is often tacit and embedded in experienced professionals.

Our findings have implications for understanding the role of human capital in firm performance and for analyzing how competitive advantages are sustained or eroded through labor market dynamics. The results suggest that controlling the mobility of tax professionals may be an important concern for firms seeking to maintain tax planning advantages.

Citation

Barrios, John Manuel, and John Gallemore. "Tax Planning Knowledge Diffusion via the Labor Market." Management Science, Vol. 70, No. 2 (February 2024), pp. 1194-1215.

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