In terms of the capital structure of a firm, we know that there are significant differences among industries and even among firms within industries.

In terms of the capital structure of a firm, we know that there are significant differences among industries and even among firms within industries. Discuss the factors that go into the determination of the "optimal" level of debt a firm should carry. List firm specific factors and then discuss.  That is, what consideration must you make when determining how much debt your firm can handle?