SECTION 16. MAINTENANCE OF
Internal Revenue Bulletin 2013-18 · 2026-10-03 edition · updated 2026-10-04 · United States
APPROVED STATUS
.01 A § 403(b) pre-approved plan must be amended by the pre-approved plan sponsor and, if necessary, the adopting eligible employer(s), to retain its approved status if any provisions therein fail to meet the requirements of § 403(b) as a result of a change in the Code, regulations, revenue rulings, or other guidance published by the Service. The Service expects future guidance to require the restatement of every § 403(b) pre-approved plan by the pre-approved plan sponsor every six years. Upon issuance of a new opinion or advisory letter for the restated plan, adopting eligible employers would generally be required to adopt the restated plan (by completing a new adoption agreement, in the case of a prototype plan).
.02 As provided in section 8.05, every § 403(b) pre-approved plan must provide that, in the event of any conflict between the terms of the pre-approved plan and the terms of investment arrangements under the plan (or of any other documents incorporated by reference into the plan), the terms of the pre-approved plan shall govern. An eligible employer may not rely on an opinion or advisory letter issued with respect to a § 403(b) pre-approved plan if any investment arrangement under the plan provides that the terms of the investment arrangement shall govern in the event of any conflict between the terms of the arrangement and the terms of the pre-approved plan. Employers and their advisors should take this requirement into account in considering any investment arrangements to be offered under a § 403(b) pre-approved plan.
.03 If a pre-approved plan sponsor determines that a § 403(b) pre-approved plan as adopted by an eligible employer may no longer satisfy the requirements of § 403(b)
plan, whether standardized or nonstandardized, may rely upon an opinion letter issued for the plan that the form of the adopting eligible employer’s plan satisfies the requirements of § 403(b) if the plan is a governmental plan or if the adopting eligible employer is a Church or QCCO. However, the issuance of an opinion letter does not constitute a determination that the plan is a governmental plan or that the adopting employer is a Church or QCCO.
.02 Standardized plans adopted by other § 501(c)(3) tax-exempt employers. An eligible employer that adopts a standardized § 403(b) prototype plan that is not a governmental plan or a plan of a Church or QCCO may rely upon an opinion letter issued for the plan that the form of the adopting eligible employer’s plan satisfies the requirements of § 403(b), including, if applicable, the requirements of §§ 401(a)(4) and 410(b), if (1) the only contributions under the plan are elective deferrals, or (2) the plan provides for contributions other than elective deferrals, all of the employers in the adopting eligible employer’s controlled group are eligible employers within the meaning of § 1.403(b)–2(b)(8). If the plan provides for contributions other than elective deferrals and the adopting eligible employer’s controlled group includes any employer that is not an eligible employer within the meaning of § 1.403(b)–2(b)(8), the adopting eligible employer may rely on the opinion letter, except with respect to whether nonelective contributions under the plan satisfy the requirements of §§ 401(a)(4) and 410(b).
.03 Nonstandardized plans adopted by other § 501(c)(3) tax-exempt employers. An eligible employer that adopts a nonstandardized § 403(b) prototype plan that is not a governmental plan or a plan of a Church or QCCO may rely upon an opinion letter issued for the plan that the form of the adopting eligible employer’s plan satisfies the requirements of § 403(b), except with respect to whether nonelective contributions under the plan satisfy the requirements of §§ 401(a)(4) and 410(b).
.04 No reliance on § 415 in certain circumstances. Notwithstanding the other provisions of this section 14, an opinion letter issued for a § 403(b) prototype plan may not be relied upon with respect to the requirements of § 415 if the adopting eligible employer or any of its related employers maintains another § 403(b) plan cov
ering any of the same participants as the § 403(b) prototype plan, unless the other plan is also a § 403(b) prototype plan. For this purpose, the term “related employers” means all employers that are aggregated with the adopting eligible employer under § 414(b) and (c) (each as modified by § 415(h)), (m), and (o), including § 1.414(c)–5. (Also see §§ 1.415(c)–1(d) and 1.415(f)–1(f) for special rules applicable to § 403(b) plans.)
.05 No reliance on inherently factual issues. An opinion letter for a § 403(b) prototype plan also may not be relied upon with respect to issues of an inherently factual nature, such as whether the effective availability of any benefits, rights, and features is nondiscriminatory, or with respect to whether a plan satisfies the requirements of §§ 401(a)(4) and 410(b) with respect to former employees.
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