active participant
(5) Active participant For purposes of this subsection, the term “active participant” means, with respect to any plan year, an individual— (A) who is an active participant in— (i) a plan described in section 401(a) which includes a trust exempt from tax under section 501(a), (ii) an annuity plan described in section 403(a), (iii) a plan established for its employees by the United States, by a State or political subdivision thereof, or by an agency or instrumentality of any of the foregoing, (iv) an annuity contract described in section 403(b), (v) a simplified employee pension (within the meaning of section 408(k) ), or (vi) any simple retirement account (within the meaning of section 408(p) ), or (B) who makes deductible contributions to a trust described in section 501(c)(18). The determination of whether an individual is an active participant shall be made without regard to whether or not such individual’s rights under a plan, trust, or contract are nonforfeitable. An eligible deferred compensation plan (within the meaning of section 457(b) ) shall not be treated as a plan described in subparagraph (A)(iii).