This paper proposes a valuation model of a bond with default risk. Extending from
the Merton’s structural model, this model incorporates the fixed cost of the firm’
s operation, where the fixed cost is considered a “perpetual debt” of the
underlying firm, senior to the financial debt obligations. Using the structural
model framework, we relative value the bond to the observed firm’s market
capitalization, and provide a model that is empirically testable, where the model
uses available data from financial statements.

