Small Business Retirement and Benefit Extension Act

[AI summary unavailable — showing source text] Small Business Retirement and Benefit Extension Act - Amends the Internal Revenue Code (IRC) to cease, as of 1988, the application of special rules for employee benefit plans that are top-heavy. (A top-heavy plan is one in which the value of plan benefits for specified "key" employees exceeds 60 percent of those for all employees under the plan.) Establishes, as a component of the general business credit against income tax, a credit for the administrative costs incurred by an employer having 100 of fewer employees in maintaining a qualified employee pension plan. Limits such credit to a maximum of $3,000 ($4,500 in the case of a defined benefit plan). Reduces the amount of the credit when the average number of employees during a relevant period exceeds 50. Amends the Tax Reform Act of 1986 and the IRC to: (1) apply nondiscrimination rules for coverage and benefits to certain employee benefit plans as of 1991 (currently 1988); (2) extend from 1987 to 1989 the effective date of amendments relating to the definition of "compensation" with respect to pension, profit-sharing, and stock bonus plans; (3) render nontaxable any annuities purchased for employees by a nongovernmental tax-exem…