Tax-Adjusted Discount Rates: A General Formula Under Constant Leverage Ratios

Working Paper: CEPR ID: DP8330

Authors: Peter Molnár; Kjell G. Nyborg

Abstract: Cooper and Nyborg (2008) derive a tax-adjusted discount rate formula under a constant proportion leverage policy, investor taxes and risky debt. However, their analysis assumes zero recovery in default. We extend their framework to allow for positive recovery rates. We also allow for differences in bankruptcy codes with respect to the order of priority of interest payments versus repayment of principal in default, which may have tax consequences. The general formula we derive differs from that of Cooper and Nyborg when recovery rates in default are anticipated to be positive. However, under continuous rebalancing, the formula collapses to that of Cooper and Nyborg. We provide an explanation for why the effect of the anticipated recovery rate is not directly visible in the general continuous rebalancing formula, even though this formula is derived under the assumption of partial default. The errors from using the continuous approximation formula are sensitive to the anticipated recovery in default, yet small. The "cost of debt" in the tax adjusted discount rate formula is the debt?s yield rather than its expected rate of return.

Keywords: cost of debt; partial default; personal taxes; risky debt; tax shields; tax-adjusted discount rates

JEL Codes: G31; G32


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
tax-adjusted discount rate formula (H43)recovery rates (G33)
recovery rates (G33)tax shield valuation (G32)
personal taxes (H24)tax shield valuation (G32)
yield on risky debt (G12)cost of debt (G32)
anticipated recovery rate (G33)tax-adjusted discount rate (H43)
anticipated recovery rate (G33)accuracy of tax-adjusted discount rate (H43)
anticipated recovery rate (G33)tax-adjusted discount rate under continuous rebalancing (H43)

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