Are Debt and Leases Substitutes?

Lease valuation models often begin with the assumption that leases and debt are substi? tutes. This paper demonstrates that, because leasing is a mechanism for selling excess tax deductions, it can motivate the lessee firm to increase the proportion of debt in its capital structure relative to an otherwise identical firm that does not use leasing. Thus, debt and leases can be complements. We also show that a competitive lessor will use diversification to reduce risk and increase the probability that tax deductions are fully utilized so that it can lower lease payments.