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Taxes Depress Corporate Borrowing: Evidence from Private Firms

Ivan Ivanov1; Luke Pettit2; Toni M. Whited3

1 Federal Reserve Bank of Chicago · 2 George Mason University · 3 University of Michigan and NBER

Review of Economic Studies 2026

We use variation in state corporate income tax rates to re-examine the relation between taxes and corporate leverage. Contrary to prior research, corporate leverage rises after tax cuts for small private firms. An estimated dynamic equilibrium model shows that tax cuts make capital more productive and spur the use of leverage. Tax cuts also produce more distant default thresholds and lower credit spreads. These effects outweigh the lower interest tax deduction and lead to higher optimal leverage choices, especially for firms with flexible investment policies. The presence of the interest tax deduction raises consumer welfare in equilibrium.

DOI
10.1093/restud/rdaf094
Volume
93 (4)
Pages
2715-2749
Language
en
Export
BibTeX
Sources
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