To amend the Internal Revenue Code of 1986 to encourage savings and investment through individual retirement accounts, and for other purposes.

Savings and Investment Incentive Act of 1991 - Title I: Retirement Savings Incentives - Amends the Internal Revenue Code to remove the limitations on deductions for individual retirement plans and provides a cost-of-living adjustment for deductible amounts. Establishes special individual retirement accounts that are nondeductible. Makes such accounts nontaxable if earnings on...