Investment Expense Deduction Act of 1991

Investment Expense Deduction Act of 1991 - Amends the Internal Revenue Code to modify the computation of alternative minimum tax with respect to itemized deductions and net investment income from partnerships.

Requires the issuer of an interest in a corporation to determine or classify whether such interest is to be treated as stock or indebtedness (or as in part stock and in part indebtedness). Provides that such determination is binding on all successors to such interest.