(a) In general. This section sets forth certain rules that apply to statutory hybrid plans under section 411(a)(13). Paragraph (b) of this section describes special rules for certain statutory hybrid plans that determine benefits under a lump sum-based benefit formula. Paragraph (c) of this section describes the vesting requirement for statutory hybrid plans. Paragraphs (d) and (e) of this section contain definitions and effective/applicability dates, respectively.

(b) Calculation of benefit by reference to hypothetical account balance or accumulated percentage—(1) Payment of a current balance or current value under a lump sum-based benefit formula. Pursuant to section 411(a)(13)(A), a statutory hybrid plan that determines any portion of a participant's benefits under a lump sum-based benefit formula is not treated as failing to meet the following requirements solely because, with respect to benefits determined under that formula, the present value of those benefits is, under the terms of the plan, equal to the then-current balance of the hypothetical account maintained for the participant or to the then-current value of the accumulated percentage of the participant's final average compensation under that formula—

(i) Section 411(a)(2); or

(ii) With respect to the participant's accrued benefit derived from employer contributions, section 411(a)(11), 411(c), or 417(e).

(2) General rules with respect to current account balance or current value—(i) Benefit after normal retirement age. The relief of section 411(a)(13) does not override the requirement for a plan that, with respect to a participant with an annuity starting date after normal retirement age, the plan either provide an actuarial increase after normal retirement age or satisfy the requirements for suspension of benefits under section 411(a)(3)(B). Accordingly, with respect to such a participant, a plan with a lump sum based benefit formula violates the requirements of section 411(a) if the balance of the hypothetical account or the value of the accumulated percentage of the participant's final average compensation is not increased sufficiently to satisfy the requirements of section 411(a)(2) for distributions commencing after normal retirement age, unless the plan suspends benefits in accordance with section 411(a)(3)(B).

(ii) Reductions limited. The relief of section 411(a)(13) does not permit the accumulated benefit under a lump sum-based benefit formula to be reduced in a manner that would be prohibited if that reduction were applied to the accrued benefit. Accordingly, the only reductions that can apply to the balance of the hypothetical account or accumulated percentage of the participant's final average compensation are reductions as a result of—

(A) Benefit payments;

(B) Qualified domestic relations orders under section 414(p);

(C) Forfeitures that are permitted under section 411(a) (such as charges for providing a qualified preretirement survivor annuity);

(D) Amendments that would reduce the accrued benefit but that are permitted under section 411(d)(6);

(E) Adjustments resulting in a decrease in the balance of the hypothetical account due to the application of interest credits (as defined in § 1.411(b)(5)-1(d)(1)(ii)(A)) that are negative for an interest crediting period;

(F) In the case of a formula that expresses the accumulated benefit as an accumulated percentage of the participant's final average compensation, adjustments resulting in a decrease in the dollar amount of the accumulated percentage of the participant's final average compensation—

(1) Due to a decrease in the dollar amount of the participant's final average compensation; or

(2) Due to an increase in the integration level, under a formula that is integrated with Social Security (for example, as a result of an increase in the Social Security taxable wage base or in Social Security covered compensation); or

(G) Other reductions to the extent provided by the Commissioner in revenue rulings, notices, or other guidance published in the Internal Revenue Bulletin (see § 601.601(d)(2)(ii)(b)).

(3) Payment of benefits based on current account balance or current value—(i) Optional forms that are actuarially equivalent. With respect to the benefits under a lump sum-based benefit formula, the relief of paragraph (b)(1) of this section applies to an optional form of benefit that is determined as of the annuity starting date as the actuarial equivalent, using reasonable actuarial assumptions, of the then-current balance of a hypothetical account maintained for the participant or the then-current value of an accumulated percentage of the participant's final average compensation.

(ii) Optional forms that are subsidized. With respect to the benefits under a lump sum-based benefit formula, if an optional form of benefit is payable in an amount that is greater than the actuarial equivalent, determined using reasonable actuarial assumptions, of the then-current balance of a hypothetical account maintained for the participant or the then-current value of an accumulated percentage of the participant's final average compensation, then the plan satisfies the requirements of sections 411(a)(2), 411(a)(11), 411(c) and 417(e) with respect to the amount of that optional form of benefit. However, see § 1.411(b)(5)-1(b)(1)(iii) for rules relating to early retirement subsidies.

(iii) Optional forms that are less valuable. Except as otherwise provided in paragraph (b)(4)(i) of this section, if an optional form of benefit is not at least the actuarial equivalent, using reasonable actuarial assumptions, of the then-current balance of a hypothetical account maintained for the participant or the then-current value of an accumulated percentage of the participant's final average compensation, then the relief under section 411(a)(13) (permitting a plan to treat the account balance or accumulated percentage as the actuarial equivalent of the portion of the accrued benefit determined under the lump sum-based benefit formula) does not apply in determining whether the optional form of benefit is the actuarial equivalent of the portion of the accrued benefit determined under the lump sum-based benefit formula. As a result, payment of that optional form of benefit must satisfy the rules applicable to payment of the accrued benefit generally under a defined benefit plan (without regard to the special rules of section 411(a)(13)(A) and paragraph (b)(1) of this section), including the requirements of section 411(a)(2) and, for optional forms subject to the minimum present value requirements of section 417(e)(3), those minimum present value requirements.

(4) Rules of application—(i) Relief applies on proportionate basis with respect to payment of only a portion of the benefit under a lump sum-based benefit formula. The relief of paragraph (b)(1) of this section applies on a proportionate basis to a payment of a portion of the benefit under a lump sum-based benefit formula, such as a payment of a specified dollar amount or percentage of the then-current balance of a hypothetical account maintained for the participant or then-current value of an accumulated percentage of the participant's final average compensation. Thus, for example, if a plan that expresses the participant's entire accumulated benefit as the balance of a hypothetical account distributes 40 percent of the participant's then-current hypothetical account balance in a single payment, the plan is treated as satisfying the requirements of section 411(a) and the minimum present value rules of section 417(e) with respect to 40 percent of the participant's then-current accrued benefit.

(ii) Relief applies only to portion of benefit determined under lump sum-based benefit formula. The relief of paragraph (b)(1) of this section generally applies only to the portion of the participant's benefit that is determined under a lump sum-based benefit formula and generally does not apply to any portion of the participant's benefit that is determined under a formula that is not a lump sum-based benefit formula. The following rules apply for purposes of satisfying section 417(e):

(A) “Greater-of” formulas. If the participant's accrued benefit equals the greater of the accrued benefit under a lump sum-based benefit formula and the accrued benefit under another formula that is not a lump-sum based benefit formula, a single-sum payment of the participant's entire benefit must be no less than the greater of the then-current accumulated benefit under the lump sum-based benefit formula and the present value, determined in accordance with section 417(e), of the benefit under the other formula. For example, assume that the accrued benefit under a plan is determined as the greater of the accrued benefit attributable to the balance of a hypothetical account and the accrued benefit equal to a pro rata portion of a normal retirement benefit determined by projecting the hypothetical account balance (including future principal and interest credits) to normal retirement age. In such a case, a single-sum payment of the participant's entire benefit must be no less than the greater of the then-current balance of the hypothetical account and the present value, determined in accordance with section 417(e), of the pro rata benefit determined by projecting the hypothetical account balance to normal retirement age.

(B) “Sum-of” formulas. If the participant's accrued benefit equals the sum of the accrued benefit under a lump sum-based benefit formula and the accrued benefit under another formula that is not a lump-sum based benefit formula, a single-sum payment of the participant's entire benefit must be no less than the sum of the then-current accumulated benefit under the lump sum-based benefit formula and the present value, determined in accordance with section 417(e), of the benefit under the other formula. For example, assume that the accrued benefit under a plan is determined as the sum of the accrued benefit attributable to the balance of a hypothetical account and the accrued benefit equal to the excess of the benefit under another formula over the benefit under the hypothetical account formula. In such a case, a single-sum payment of the participant's entire benefit must be no less than the sum of the then-current balance of the hypothetical account and the present value, determined in accordance with section 417(e), of the excess of the benefit under the other formula over the benefit under the hypothetical account formula.

(C) “Lesser-of” formulas. If the participant's accrued benefit equals the lesser of the accrued benefit under a lump sum-based benefit formula and the accrued benefit under another formula that is not a lump-sum based benefit formula, a single-sum payment of the participant's entire benefit must be no less than the lesser of the then-current accumulated benefit under the lump sum-based benefit formula and the present value, determined in accordance with section 417(e), of the benefit under the other formula. For example, assume that the accrued benefit under a plan is determined as the accrued benefit attributable to the balance of a hypothetical account, but no greater than an accrued benefit payable at normal retirement age in the form of a straight life annuity of $100,000 per year. In such a case, a single-sum payment of the participant's entire benefit must be no less than the lesser of the then-current balance of the hypothetical account and the present value, determined in accordance with section 417(e), of a benefit payable at normal retirement age in the form of a straight life annuity of $100,000 per year. If the formula that is not a lump sum-based benefit formula is the maximum annual benefit described in section 415(b), then the single-sum payment of the participant's entire benefit must not exceed the then-current accumulated benefit under the lump sum-based benefit formula.

(c) Three-year vesting requirement—(1) In general. Pursuant to section 411(a)(13)(B), if any portion of the participant's accrued benefit under a defined benefit plan is determined under a statutory hybrid benefit formula, the plan is treated as failing to satisfy the requirements of section 411(a)(2) unless the plan provides that the participant has a nonforfeitable right to 100 percent of the participant's accrued benefit if the participant has three or more years of service. Thus, this 3-year vesting requirement applies with respect to the entire accrued benefit of a participant under a defined benefit plan even if only a portion of the participant's accrued benefit under the plan is determined under a statutory hybrid benefit formula. Similarly, if the participant's accrued benefit under a defined benefit plan is, under the plan's terms, the larger of two (or more) benefit amounts, where each amount is determined under a different benefit formula (including a benefit determined pursuant to an offset among formulas within the plan or a benefit determined as the greater of a protected benefit under section 411(d)(6) and another benefit amount) and at least one of those formulas is a statutory hybrid benefit formula, the participant's entire accrued benefit under the defined benefit plan is subject to the 3-year vesting rule of section 411(a)(13)(B) and this paragraph (c). The rule described in the preceding sentence applies even if the larger benefit is ultimately the benefit determined under a formula that is not a statutory hybrid benefit formula.

(2) Examples. The provisions of this paragraph (c) are illustrated by the following examples:

(d) Definitions—(1) In general. The definitions in this paragraph (d) apply for purposes of this section.

(2) Accumulated benefit. A participant's accumulated benefit at any date means the participant's benefit, as expressed under the terms of the plan, accrued to that date. For this purpose, if a participant's benefit is expressed under the terms of the plan as the current balance of a hypothetical account or the current value of an accumulated percentage of the participant's final average compensation, the participant's accumulated benefit is expressed in that manner regardless of how the plan defines the participant's accrued benefit. Thus, for example, the accumulated benefit of a participant may be expressed under the terms of the plan as either the current balance of a hypothetical account or the current value of an accumulated percentage of the participant's final average compensation, even if the plan defines the participant's accrued benefit as an annuity beginning at normal retirement age that is actuarially equivalent to that balance or value.

(3) Lump sum-based benefit formula— (i) In general. A lump sum-based benefit formula means a benefit formula used to determine all or any part of a participant's accumulated benefit under a defined benefit plan under which the accumulated benefit provided under the formula is expressed as the current balance of a hypothetical account maintained for the participant or as the current value of an accumulated percentage of the participant's final average compensation. A benefit formula is expressed as the current balance of a hypothetical account maintained for the participant if it is expressed as a current single-sum dollar amount equal to that balance. A benefit formula is expressed as the current value of an accumulated percentage of the participant's final average compensation if it is expressed as a current single-sum dollar amount equal to a percentage of the participant's final average compensation or, for plan years described in paragraph (e)(2)(ii)(A) or (e)(2)(ii)(B) of this section, as applicable (or any earlier date as elected by the taxpayer), a percentage of the participant's highest average compensation (regardless of whether the plan applies a limitation on the past period for which compensation is taken into account in determining highest average compensation). Whether a benefit formula is a lump sum-based benefit formula is determined based on how the accumulated benefit of a participant is expressed under the terms of the plan, and does not depend on whether the plan provides an optional form of benefit in the form of a single-sum payment. However, for plan years described in paragraph (e)(2)(ii)(A) or (e)(2)(ii)(B) of this section (as applicable), a benefit formula does not constitute a lump sum-based benefit formula unless a distribution of the benefits under that formula in the form of a single-sum payment equals the accumulated benefit under that formula (except to the extent the single-sum payment is greater to satisfy the requirements of section 411(d)(6)). In addition, for plan years described in paragraph (e)(2)(ii)(A) or (e)(2)(ii)(B) of this section (as applicable), a benefit formula does not constitute a lump sum-based benefit formula unless the portion of the participant's accrued benefit that is determined under that formula and the then-current balance of the hypothetical account or the then-current value of the accumulated percentage of the participant's final average compensation are actuarially equivalent (determined using reasonable actuarial assumptions) either—

(A) Upon attainment of normal retirement age; or

(B) At the annuity starting date for a distribution with respect to that portion.

(ii) Exception for employee contributions. For purposes of the definition of a lump sum-based benefit formula in paragraph (d)(3)(i) of this section, the benefit properly attributable to after-tax employee contributions, rollover contributions from eligible retirement plans under section 402(c)(8), and other similar employee contributions (such as repayments of distributions pursuant to section 411(a)(7)(C) and employee contributions that are pickup contributions pursuant to section 414(h)(2)) is disregarded. However, a benefit is not properly attributable to contributions described in this paragraph (d)(3)(ii) if the contributions are credited with interest at a rate that exceeds a reasonable rate of interest or if the conversion factors used to calculate such benefit are not actuarially reasonable. See section 411(c) for an example of a calculation of a benefit that is properly attributable to employee contributions.

(4) Statutory hybrid benefit formula—(i) In general. A statutory hybrid benefit formula means a benefit formula that is either a lump sum-based benefit formula or a formula that is not a lump sum-based benefit formula but that has an effect similar to a lump sum-based benefit formula.

(ii) Effect similar to a lump sum-based benefit formula— (A) In general. Except as provided in paragraphs (d)(4)(ii)(B) through (E) of this section, a benefit formula under a defined benefit plan that is not a lump sum-based benefit formula has an effect similar to a lump sum-based benefit formula if the formula provides that a participant's accumulated benefit is expressed as a benefit that includes the right to adjustments (including a formula that provides for indexed benefits under § 1.411(b)(5)-1(b)(2)) for a future period and the total dollar amount of those adjustments is reasonably expected to be smaller for the participant than for any similarly situated, younger individual (within the meaning of § 1.411(b)(5)-1(b)(5)) who is or could be a participant in the plan. For this purpose, the right to adjustments for a future period means, for plan years described in paragraph (e)(2)(ii)(A) or (e)(2)(ii)(B) of this section (as applicable), the right to any changes in the dollar amount of benefits over time, regardless of whether those adjustments are denominated as interest credits. A benefit formula that does not include adjustments for any future period is treated as a formula with an effect similar to a lump sum-based benefit formula if the formula would be described in this paragraph (d)(4)(ii)(A) except for the fact that the adjustments are provided pursuant to a pattern of repeated plan amendments. See § 1.411(d)-4, A-1(c)(1).

(B) Exception for post-retirement benefit adjustments. Post-annuity starting date adjustments in the amount payable to a participant (such as cost-of-living increases) are disregarded in determining whether a benefit formula under a defined benefit plan has an effect similar to a lump sum-based benefit formula.

(C) Exception for certain variable annuity benefit formulas. If a variable annuity benefit formula adjusts benefits by reference to the difference between a rate of return on plan assets (or specified market indices) and a specified assumed interest rate of 5 percent or higher, then the variable annuity benefit formula is not treated as being reasonably expected to provide a smaller total dollar amount of future adjustments for the participant than for any similarly situated, younger individual who is or could be a participant in the plan, and thus such a variable annuity benefit formula does not have an effect similar to a lump sum-based benefit formula. For plan years described in paragraph (e)(2)(ii)(A) or (e)(2)(ii)(B) of this section (as applicable) (or any earlier date as elected by the taxpayer), the rate of return on plan assets (or specified market index) by reference to which the benefit formula adjusts must be a rate of return described in § 1.411(b)(5)-1(d)(5) (which includes, in the case of a benefit formula determined with reference to an annuity contract for an employee issued by an insurance company licensed under the laws of a State, the rate of return on the market index specified under that contract).

(D) Exception for employee contributions. Benefits that are disregarded under paragraph (d)(3)(ii) of this section (benefits properly attributable to certain employee contributions) are also disregarded for purposes of determining whether a benefit formula has an effect similar to a lump sum-based benefit formula.

(E) Exception for certain actuarial reductions for early commencement under traditional formula. A defined benefit formula is not treated as having an effect similar to a lump sum-based benefit formula with respect to a participant merely because the formula provides for a reduction in the benefit payable at early retirement due to early commencement (with the result that the benefit payable at normal retirement age is greater than the benefit payable at early retirement), provided that the benefit payable at normal retirement age to the participant cannot be less than the benefit payable at normal retirement age to any similarly situated, younger individual who is or could be a participant in the plan. Thus, for example, a plan that provides a benefit equal to 1 percent of final average pay per year of service, payable as a life annuity at normal retirement age, is not treated as having an effect similar to a lump sum-based benefit formula by reason of an actuarial reduction in the benefit payable under the plan for early commencement.

(5) Statutory hybrid plan. A statutory hybrid plan means a defined benefit plan that contains a statutory hybrid benefit formula.

(6) Variable annuity benefit formula. A variable annuity benefit formula means any benefit formula under a defined benefit plan which provides that the amount payable is periodically adjusted by reference to the difference between a rate of return and a specified assumed interest rate.

(e) Effective/applicability date—(1) Statutory effective/applicability date—(i) In general. Except as provided in paragraphs (e)(1)(ii) and (e)(1)(iii) of this section, section 411(a)(13) applies for periods beginning on or after June 29, 2005.

(ii) Calculation of benefits. Section 411(a)(13)(A) applies to distributions made after August 17, 2006.

(iii) Vesting—(A) Plans in existence on June 29, 2005—(1) General rule. In the case of a plan that is in existence on June 29, 2005 (regardless of whether the plan is a statutory hybrid plan on that date), section 411(a)(13)(B) applies to plan years that begin on or after January 1, 2008.

(2) Exception for plan sponsor election. See § 1.411(b)(5)-1(f)(1)(iii)(A)(2) for a special election for early application of section 411(a)(13)(B).

(B) Plans not in existence on June 29, 2005. In the case of a plan not in existence on June 29, 2005, section 411(a)(13)(B) applies to plan years that end on or after June 29, 2005.

(C) Collectively bargained plans. Notwithstanding paragraphs (e)(1)(iii)(A) and (B) of this section, in the case of a collectively bargained plan maintained pursuant to one or more collective bargaining agreements between employee representatives and one or more employers ratified on or before August 17, 2006, the requirements of section 411(a)(13)(B) do not apply to plan years that begin before the earlier of—

(1) The later of—

(i) The date on which the last of those collective bargaining agreements terminates (determined without regard to any extension thereof on or after August 17, 2006); or

(ii) January 1, 2008; or

(2) January 1, 2010.

(D) Treatment of plans with both collectively bargained and non-collectively bargained employees. In the case of a plan with respect to which a collective bargaining agreement applies to some, but not all, of the plan participants, the plan is considered a collectively bargained plan for purposes of paragraph (e)(1)(iii)(C) of this section if it is considered a collectively bargained plan under the rules of § 1.436-1(a)(5)(ii)(B).

(E) Hour of service required. Section 411(a)(13)(B) does not apply to a participant who does not have an hour of service after section 411(a)(13)(B) would otherwise apply to the participant under the rules of paragraph (e)(1)(iii)(A), (B), or (C) of this section.

(2) Effective/applicability date of regulations—(i) In general. Except as provided in paragraph (e)(2)(ii) of this section, this section applies to plan years that begin on or after January 1, 2011. For the periods after the statutory effective date set forth in paragraph (e)(1) of this section and before the regulatory effective date set forth in the preceding sentence, the relief of section 411(a)(13)(A) applies and the 3-year vesting requirement of section 411(a)(13)(B) must be satisfied. During these periods, a plan is permitted to rely on the provisions of this section for purposes of applying the relief of section 411(a)(13)(A) and satisfying the requirements of section 411(a)(13)(B).

(ii) Special effective date—(A) In general. Except as otherwise provided in this paragraph (e)(2)(ii), paragraphs (b)(2), (3), and (4) of this section apply to plan years that begin on or after January 1, 2017.

(B) Collectively bargained plans. In the case of a plan maintained pursuant to one or more collective bargaining agreements between employee representatives and one or more employers ratified on or before November 13, 2015, that constitutes a collectively bargained plan under the rules of § 1.436-1(a)(5)(ii)(B), paragraphs (b)(2), (3), and (4) of this section apply to plan years that begin on or after the later of—

(1) January 1, 2017; and

(2) The earlier of—

(i) January 1, 2019; and

(ii) The date on which the last of those collective bargaining agreements terminates (determined without regard to any extension thereof on or after November 13, 2015).

(iii) Hour of service required. A benefit formula is not treated as having an effect similar to a lump sum-based benefit formula under paragraph (d)(4)(ii) of this section with respect to a participant who does not have an hour of service after the regulatory effective date set forth in paragraph (e)(2)(i) of this section.