Within the theory of corporate finance, bankruptcy costs of debt are the increased costs of financing with debt instead of equity that result from a higher probability of bankruptcy. The fact that bankruptcy is generally a costly process in itself and not only a transfer of ownership implies that these costs negatively affect the total value of the firm. These costs can be thought of as a financial cost, in the sense that the cost of financing increases because the probability of bankruptcy increases. One way to understand this is to realize that when a firm goes bankrupt investors holding its debt are likely to lose part or all of their investment, and therefore investors require a higher rate of return when investing in bonds of a firm that can easily go bankrupt. This implies that an in