Appendix A
401(a) plan A retirement account with many of the characteristics of a 403(b) plan, except that only the employer may contribute to the 401(a).
401(k) plans Broad label for a variety of employer-sponsored retirement savings incentive programs.
403(b) plan A retirement plan available to employees of public schools, nonprofit organizations, or the clergy. It is identical to the 401(k), except that employers need not contribute, and they aren’t subject to 401(k)’s stringent Employee Retirement Income Security Act (ERISA) rules.
457 deferred-compensation plan Sometimes called a deferred-comp plan, this retirement plan defers an employee’s pay by the amount contributed, a characteristic shared by 401(k) and SIMPLE plans. ...

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