[Code of Federal Regulations]
[Title 26, Volume 5]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR1.401(a)(4)-9]

[Page 156-162]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 1_INCOME TAXES--Table of Contents
 
Sec. 1.401(a)(4)-9  Plan aggregation and restructuring.

    (a) Introduction. Two or more plans that are permissively aggregated 
and treated as a single plan under Sec. Sec. 1.410(b)-7(d) must also be 
treated as a single plan for purposes of section 401(a)(4). See Sec. 
1.401(a)(4)-12 (definition of plan). An aggregated plan is generally 
tested under the same rules applicable to single plans. Paragraph (b) of 
this section, however, provides special rules for determining whether a 
plan that consists of one or more defined contribution plans and one or 
more defined benefit plans (a DB/DC plan) satisfies section 401(a)(4) 
with respect to the amount of employer-provided benefits and the 
availability of benefits, rights, and features. Paragraph (c) of this 
section provides rules allowing a plan to be treated as consisting of 
separate component plans and allowing the component plans to be tested 
separately under section 401(a)(4).
    (b) Application of nondiscrimination requirements to DB/DC plans--
(1) General rule. Except as provided in paragraph

[[Page 157]]

(b)(2) of this section, whether a DB/DC plan satisfies section 401(a)(4) 
is determined using the same rules applicable to a single plan. In 
addition, paragraph (b)(3) of this section provides an optional rule for 
demonstrating nondiscrimination in availability of benefits, rights, and 
features provided under a DB/DC plan.
    (2) Special rules for demonstrating nondiscrimination in amount of 
contributions or benefits--(i) Application of general tests. A DB/DC 
plan satisfies section 401(a)(4) with respect to the amount of 
contributions or benefits for a plan year if it would satisfy Sec. 
1.401(a)(4)-3(c)(1) (without regard to the special rule in Sec. 
1.401(a)(4)-3(c)(3)) for the plan year if an employee's aggregate normal 
and most valuable allocation rates, as determined under paragraph 
(b)(2)(ii)(A) of this section, or an employee's aggregate normal and 
most valuable accrual rates, as determined under paragraph (b)(2)(ii)(B) 
of this section, were substituted for each employee's normal and most 
valuable accrual rates, respectively, in the determination of rate 
groups.
    (ii) Determination of aggregate rates--(A) Aggregate allocation 
rates. An employee's aggregate normal and most valuable allocation rates 
are determined by treating all defined contribution plans that are part 
of the DB/DC plan as a single plan, and all defined benefit plans that 
are part of the DB/DC plan as a separate single plan; and determining an 
allocation rate and equivalent normal and most valuable allocation rates 
for the employee under each plan under Sec. Sec. 1.401(a)(4)-2(c)(2) 
and 1.401(a)(4)-8(c)(2), respectively. The employee's aggregate normal 
allocation rate is the sum of the employee's allocation rate and 
equivalent normal allocation rate determined in this manner, and the 
employee's aggregate most valuable allocation rate is the sum of the 
employee's allocation rate and equivalent most valuable allocation rate 
determined in this manner.
    (B) Aggregate accrual rates. An employee's aggregate normal and most 
valuable accrual rates are determined by treating all defined 
contribution plans that are part of the DB/DC plan as a single plan, and 
all defined benefit plans that are part of the DB/DC plan as a separate 
single plan; and determining an equivalent accrual rate and normal and 
most valuable accrual rates for the employee under each plan under 
Sec. Sec. 1.401(a)(4)-8(b)(2) and 1.401(a)(4)-3(d), respectively. The 
employee's aggregate normal accrual rate is the sum of the employee's 
equivalent accrual rate and the normal accrual rate determined in this 
manner, and the employee's aggregate most valuable accrual rate is the 
sum of the employee's equivalent accrual rate and most valuable accrual 
rate determined in this manner.
    (iii) Options applied on an aggregate basis. The optional rules in 
Sec. 1.401(a)(4)-2(c)(2)(iv) (imputation of permitted disparity) and 
(v) (grouping of rates) may not be used to determine an employee's 
allocation or equivalent allocation rate, but may be applied to 
determine an employee's aggregate normal and most valuable allocation 
rates by substituting those rates (determined without regard to the 
option) for the employee's allocation rate in that section where 
appropriate. The optional rules in Sec. 1.401(a)(4)-3(d)(3) (e.g., 
imputation of permitted disparity) may not be used to determine an 
employee's accrual or equivalent accrual rate, but may be applied to 
determine an employee's aggregate normal and most valuable accrual rate 
by substituting those rates (determined without regard to the option) 
for the employee's normal and most valuable accrual rates, respectively, 
in that section where appropriate.
    (iv) Consistency rule--(A) General rule. Aggregate normal and most 
valuable allocation rates and aggregate normal and most valuable accrual 
rates must be determined in a consistent manner for all employees for 
the plan year. Thus, for example, the same measurement periods and 
interest rates must be used, and any available options must be applied 
consistently, if at all, for the entire DB/DC plan. Consequently, 
options that are not permitted to be used under Sec. 1.401(a)(4)-8 in 
cross-testing a defined contribution plan or a defined benefit plan 
(such as measurement periods that include future periods, non-standard 
interest rates, the option to disregard compensation adjustments 
described in

[[Page 158]]

Sec. 1.401(a)(4)-13(d), or the option to disregard plan provisions 
providing for actuarial increases after normal retirement age under 
Sec. 1.401(a)(4)-3(f)(3)) may not be used in testing a DB/DC plan on 
either a benefits or contributions basis, because their use would 
inevitably result in inconsistent determinations under the defined 
contribution and defined benefit portions of the plan.
    (B) Exception for section 415 alternative. A DB/DC plan does not 
fail to satisfy the consistency rule in paragraph (b)(2)(iv)(A) of this 
section merely because the limitations under section 415 are not taken 
into account, or may not be taken into account, under Sec. 1.401(a)(4)-
3(d)(2)(ii)(B) in determining employees' accrual or equivalent 
allocation rates under the defined benefit portion of the plan, even 
though those limitations are applied in determining employees' 
allocation and equivalent accrual rates under the defined contribution 
portion of the plan.
    (v) Eligibility for testing on a benefits basis--(A) General rule. 
For plan years beginning on or after January 1, 2002, unless, for the 
plan year, a DB/DC plan is primarily defined benefit in character 
(within the meaning of paragraph (b)(2)(v)(B) of this section) or 
consists of broadly available separate plans (within the meaning of 
paragraph (b)(2)(v)(C) of this section), the DB/DC plan must satisfy the 
minimum aggregate allocation gateway of paragraph (b)(2)(v)(D) of this 
section for the plan year in order to be permitted to demonstrate 
satisfaction of the nondiscrimination in amount requirement of Sec. 
1.401(a)(4)-1(b)(2) on the basis of benefits.
    (B) Primarily defined benefit in character. A DB/DC plan is 
primarily defined benefit in character if, for more than 50% of the 
NHCEs benefitting under the plan, the normal accrual rate for the NHCE 
attributable to benefits provided under defined benefit plans that are 
part of the DB/DC plan exceeds the equivalent accrual rate for the NHCE 
attributable to contributions under defined contribution plans that are 
part of the DB/DC plan.
    (C) Broadly available separate plans. A DB/DC plan consists of 
broadly available separate plans if the defined contribution plan and 
the defined benefit plan that are part of the DB/DC plan each would 
satisfy the requirements of section 410(b) and the nondiscrimination in 
amount requirement of Sec. 1.401(a)(4)-1(b)(2) if each plan were tested 
separately and assuming that the average benefit percentage test of 
Sec. 1.410(b)-5 were satisfied. For this purpose, all defined 
contribution plans that are part of the DB/DC plan are treated as a 
single defined contribution plan and all defined benefit plans that are 
part of the DB/DC plan are treated as a single defined benefit plan. In 
addition, if permitted disparity is used for an employee for purposes of 
satisfying the separate testing requirement of this paragraph 
(b)(2)(v)(C) for plans of one type, it may not be used in satisfying the 
separate testing requirement for plans of the other type for the 
employee.
    (D) Minimum aggregate allocation gateway--(1) General rule. A DB/DC 
plan satisfies the minimum aggregate allocation gateway if each NHCE has 
an aggregate normal allocation rate that is at least one third of the 
aggregate normal allocation rate of the HCE with the highest such rate 
(HCE rate), or, if less, 5% of the NHCE's compensation, provided that 
the HCE rate does not exceed 25% of compensation. If the HCE rate 
exceeds 25% of compensation, then the aggregate normal allocation rate 
for each NHCE must be at least 5% increased by one percentage point for 
each 5-percentage-point increment (or portion thereof) by which the HCE 
rate exceeds 25% (e.g., the NHCE minimum is 6% for an HCE rate that 
exceeds 25% but not 30%, and 7% for an HCE rate that exceeds 30% but not 
35%).
    (2) Deemed satisfaction. A plan is deemed to satisfy the minimum 
aggregate allocation gateway of this paragraph (b)(2)(v)(D) if the 
aggregate normal allocation rate for each NHCE is at least 7\1/2\% of 
the NHCE's compensation within the meaning of section 415(c)(3), 
measured over a period of time permitted under the definition of plan 
year compensation.
    (3) Averaging of equivalent allocation rates for NHCEs. For purposes 
of this paragraph (b)(2)(v)(D), a plan is permitted to treat each NHCE 
who benefits under the defined benefit plan as having an equivalent 
normal allocation

[[Page 159]]

rate equal to the average of the equivalent normal allocation rates 
under the defined benefit plan for all NHCEs benefitting under that 
plan.
    (E) Determination of rates. For purposes of this paragraph 
(b)(2)(v), the normal accrual rate and the equivalent normal allocation 
rate attributable to defined benefit plans, the equivalent accrual rate 
attributable to defined contribution plans, and the aggregate normal 
allocation rate are determined under paragraph (b)(2)(ii) of this 
section, but without taking into account the imputation of permitted 
disparity under Sec. 1.401(a)(4)-7, except as otherwise permitted under 
paragraph (b)(2)(v)(C) of this section.
    (F) Examples. The following examples illustrate the application of 
this paragraph (b)(2)(v):

    Example 1. (i) Employer A maintains Plan M, a defined benefit plan, 
and Plan N, a defined contribution plan. All HCEs of Employer A are 
covered by Plan M (at a 1% accrual rate), but are not covered by Plan N. 
All NHCEs of Employer A are covered by Plan N (at a 3% allocation rate), 
but are not covered by Plan M. Because Plan M does not satisfy section 
410(b) standing alone, Plans M and N are aggregated for purposes of 
satisfying sections 410(b) and 401(a)(4).
    (ii) Because none of the NHCEs participate in the defined benefit 
plan, the aggregated DB/DC plan is not primarily defined benefit in 
character within the meaning of paragraph (b)(2)(v)(B) of this section 
nor does it consist of broadly available separate plans within the 
meaning of paragraph (b)(2)(v)(C) of this section. Accordingly, the 
aggregated Plan M and Plan N must satisfy the minimum aggregate 
allocation gateway of paragraph (b)(2)(v)(D) of this section in order be 
permitted to demonstrate satisfaction of the nondiscrimination in amount 
requirement of Sec. 1.401(a)(4)-1(b)(2) on the basis of benefits.
    Example 2. (i) Employer B maintains Plan O, a defined benefit plan, 
and Plan P, a defined contribution plan. All of the six employees of 
Employer B are covered under both Plan O and Plan P. Under Plan O, all 
employees have a uniform normal accrual rate of 1% of compensation. 
Under Plan P, Employees A and B, who are HCEs, receive an allocation 
rate of 15%, and participants C, D, E and F, who are NHCEs, receive an 
allocation rate of 3%. Employer B aggregates Plans O and P for purposes 
of satisfying sections 410(b) and 401(a)(4). The equivalent normal 
allocation and normal accrual rates under Plans O and P are as follows:

------------------------------------------------------------------------
                                                Equivalent   Equivalent
                                                  normal       normal
                                                allocation     accural
                                                rates for     rates for
                                                  the 1%     the 15%/3%
                   Employee                      accural     allocation
                                                under plan  under plan P
                                                O (defined    (defined
                                                 benefit    contribution
                                                plan)  (in   plan)  (in
                                                 percent)     percent)
------------------------------------------------------------------------
HCE A (age 55)...............................         3.93          3.82
HCE B (age 50)...............................         2.61          5.74
C (age 60)...................................         5.91           .51
D (age 45)...................................         1.74          1.73
E (age 35)...................................          .77          3.90
F (age 25)...................................          .34          8.82
------------------------------------------------------------------------

    (ii) Although all of the NHCEs benefit under Plan O (the defined 
benefit plan), the aggregated DB/DC plan is not primarily defined 
benefit in character because the normal accrual rate attributable to 
defined benefit plans (which is 1% for each of the NHCEs) is greater 
than the equivalent accrual rate under defined contribution plans only 
for Employee C. In addition, because the 15% allocation rate is 
available only to HCEs, the defined contribution plan cannot satisfy the 
requirements of Sec. 1.401(a)(4)-2 and does not have broadly available 
allocation rates within the meaning of Sec. 1.401(a)(4)-8(b)(1)(iii). 
Further, the defined contribution plan does not satisfy the minimum 
allocation gateway of Sec. 1.401(a)(4)-8(b)(1)(vi) (3% is less than 1/3 
of the 15% HCE rate). Therefore, the defined contribution plan within 
the DB/DC plan cannot separately satisfy Sec. 1.401(a)(4)-1(b)(2) and 
does not constitute a broadly available separate plan within the meaning 
of paragraph (b)(2)(v)(C) of this section. Accordingly, the aggregated 
plans are permitted to demonstrate satisfaction of the nondiscrimination 
in amounts requirement of Sec. 1.401(a)(4)-1(b)(2) on the basis of 
benefits only if the aggregated plans satisfy the minimum aggregate 
allocation gateway of paragraph (b)(2)(v)(D) of this section.
    (iii) Employee A has an aggregate normal allocation rate of 18.93% 
under the aggregated plans (3.93% from Plan O plus 15% from Plan P), 
which is the highest aggregate normal allocation rate for any HCE under 
the plans. Employee F has an aggregate normal allocation rate of 3.34% 
under the aggregated plans (.34% from Plan O plus 3% from Plan P) which 
is less than the 5% aggregate normal allocation rate that Employee F 
would be required to have to satisfy the minimum aggregate allocation 
gateway of paragraph (b)(2)(v)(D) of this section.
    (iv) However, for purposes of satisfying the minimum aggregate 
allocation gateway of paragraph (b)(2)(v)(D) of this section, Employer B 
is permitted to treat each NHCE who benefits under Plan O (the defined 
benefit plan) as having an equivalent allocation rate equal to the 
average of the equivalent allocation rates under Plan O for all NHCEs

[[Page 160]]

benefitting under that plan. The average of the equivalent allocation 
rates for all of the NHCEs under Plan O is 2.19% (the sum of 5.91%, 
1.74%, .77%, and .34%, divided by 4). Accordingly, Employer B is 
permitted to treat all of the NHCEs as having an equivalent allocation 
rate attributable to Plan O equal to 2.19%. Thus, all of the NHCEs can 
be treated as having an aggregate normal allocation rate of 5.19% for 
this purpose (3% from the defined contribution plan and 2.19% from the 
defined benefit plan) and the aggregated DB/DC plan satisfies the 
minimum aggregate allocation gateway of paragraph (b)(2)(v)(D) of this 
section.

    (3) Optional rules for demonstrating nondiscrimination in 
availability of certain benefits, rights, and features--(i) Current 
availability. A DB/DC plan is deemed to satisfy Sec. 1.401(a)(4)-
4(b)(1) with respect to the current availability of a benefit, right, or 
feature other than a single sum benefit, loan, ancillary benefit, or 
benefit commencement date (including the availability of in-service 
withdrawals), that is provided under only one type of plan (defined 
benefit or defined contribution) included in the DB/DC plan, if the 
benefit, right, or feature is currently available to all NHCEs in all 
plans of the same type as the plan under which it is provided.
    (ii) Effective availability. The fact that it may be difficult or 
impossible to provide a benefit, right, or feature described in 
paragraph (b)(3)(i) of this section under a plan of a different type 
than the plan or plans under which it is provided is one of the factors 
taken into account in determining whether the plan satisfies the 
effective availability requirement of Sec. 1.401(a)(4)-4(c)(1).
    (c) Plan restructuring--(1) General rule. A plan may be treated, in 
accordance with this paragraph (c), as consisting of two or more 
component plans for purposes of determining whether the plan satisfies 
section 401(a)(4). If each of the component plans of a plan satisfies 
all of the requirements of sections 401(a)(4) and 410(b) as if it were a 
separate plan, then the plan is treated as satisfying section 401(a)(4).
    (2) Identification of component plans. A plan may be restructured 
into component plans, each consisting of all the allocations, accruals, 
and other benefits, rights, and features provided to a selected group of 
employees. The employer may select the group of employees used for this 
purpose in any manner, and the composition of the groups may be changed 
from plan year to plan year. Every employee must be included in one and 
only one component plan under the same plan for a plan year.
    (3) Satisfaction of section 401(a)(4) by a component plan--(i) 
General rule. The rules applicable in determining whether a component 
plan satisfies section 401(a)(4) are the same as those applicable to a 
plan. Thus, for this purpose, any reference to a plan in section 
401(a)(4) and the regulations thereunder (other than this paragraph (c)) 
is interpreted as a reference to a component plan. As is true for a 
plan, whether a component plan satisfies the uniformity and other 
requirements applicable to safe harbor plans under Sec. Sec. 
1.401(a)(4)-2(b) and 1.401(a)(4)-3(b) is determined on a design basis. 
Thus, for example, plan provisions are not disregarded merely because 
they do not currently apply to employees in the component plan if they 
will apply to those employees as a result of the mere passage of time.
    (ii) Restructuring not available for certain testing purposes. The 
safe harbor in Sec. 1.401(a)(4)-2(b)(3) for plans with uniform points 
allocation formulas is not available in testing (and thus cannot be 
satisfied by) contributions under a component plan. Similarly, component 
plans cannot be used for purposes of determining whether a plan provides 
broadly available allocation rates (as defined in Sec. 1.401(a)(4)-
8(b)(1)(iii)), determining whether a plan has a gradual age or service 
schedule (as defined in Sec. 1.401(a)(4)-8(b)(1)(iv)), determining 
whether a plan has allocation rates that are based on a uniform target 
benefit allocation (as defined in Sec. 1.401(a)(4)-8(b)(1)(v)), or 
determining whether a plan is primarily defined benefit in character or 
consists of broadly available separate plans (as defined in paragraphs 
(b)(2)(v)(B) and (C) of this section). In addition, the minimum 
allocation gateway of Sec. 1.401(a)(4)-8(b)(1)(vi) and the minimum 
aggregate allocation gateway of paragraph (b)(2)(v)(D) of this section 
cannot be satisfied on the basis of component plans. See Sec. Sec. 
1.401(k)-1(b)(3)(iii) and

[[Page 161]]

1.401(m)-1(b)(3)(iii) for rules regarding the inapplicability of 
restructuring to section 401(k) plans and section 401(m) plans.
    (4) Satisfaction of section 410(b) by a component plan--(i) General 
rule. The rules applicable in determining whether a component plan 
satisfies section 410(b) are generally the same as those applicable to a 
plan. However, a component plan is deemed to satisfy the average benefit 
percentage test of Sec. 1.410(b)-5 if the plan of which it is a part 
satisfies Sec. 1.410(b)-5 (without regard to Sec. 1.410(b)-5(f)). In 
the case of a component plan that is part of a plan that relies on Sec. 
1.410(b)-5(f) to satisfy the average benefit percentage test, the 
component plan is deemed to satisfy the average benefit percentage test 
only if the component plan separately satisfies Sec. 1.410(b)-5(f). In 
addition, all component plans of a plan are deemed to satisfy the 
average benefit percentage test if the plan makes an early retirement 
window benefit (within the meaning of Sec. 1.401(a)(4)-3(f)(4)(iii)) 
currently available (within the meaning of Sec. 1.401(a)(4)-
3(f)(4)(ii)(A)) to a group of employees that satisfies section 410(b) 
(without regard to the average benefit percentage test), and if it would 
not be necessary for the plan or any rate group or component plan of the 
plan to satisfy that test in order for the plan to satisfy sections 
401(a)(4) and 410(b) in the absence of the early retirement window 
benefit.
    (ii) Relationship to satisfaction of section 410(b) by the plan. 
Satisfaction of section 410(b) by a component plan is relevant solely 
for purposes of determining whether the plan of which it is a part 
satisfies section 401(a)(4), and not for purposes of determining whether 
the plan satisfies section 410(b) itself. The plan must still 
independently satisfy section 410(b) in order to be a qualified plan. 
Similarly, satisfaction of section 410(b) by a plan is relevant solely 
for purposes of determining whether the plan, and not the component 
plan, satisfies section 410(b). Thus, for example, a component plan that 
does not satisfy the ratio percentage test of Sec. 1.410(b)-2(b)(2) 
must still satisfy the average benefit test of Sec. 1.410(b)-2(b)(3), 
even though the plan of which it is a part satisfies the ratio 
percentage test.
    (5) Effect of restructuring under other sections. The restructuring 
rules provided in this paragraph (c) apply solely for purposes of 
sections 401(a)(4) and 401(l), and those portions of sections 410(b), 
414(s), and any other provisions that are specifically applicable in 
determining whether the requirements of section 401(a)(4) are satisfied. 
Thus, for example, a component plan is not treated as a separate plan 
under section 401(a)(26).
    (6) Examples. The following examples illustrate the rules in this 
paragraph (c):

    Example 1. Employer X maintains a defined benefit plan. The plan 
provides a normal retirement benefit equal to 1.0 percent of average 
annual compensation times years of service to employees at Plant S, and 
1.5 percent of average annual compensation times years of service to 
employees at Plant T. Under paragraph (c)(2) of this section, the plan 
may be treated as consisting of two component defined benefit plans, one 
providing retirement benefits equal to 1.0 percent of average annual 
compensation times years of service to the employees at Plant S, and 
another providing benefits equal to 1.5 percent of average annual 
compensation times years of service to employees at Plant T. If each 
component plan satisfies sections 401(a)(4) and 410(b) as if it were a 
separate plan under the rules of this paragraph (c), then the entire 
plan satisfies section 401(a)(4).
    Example 2. (a) Employer Y maintains Plan A, a defined benefit plan, 
for its Employees M, N, O, P, Q, and R. Plan A provides benefits under a 
uniform formula that satisfies the requirements of Sec. 1.401(a)(4)-3 
(b)(2) and (b)(3) before it is amended on February 14, 1994. The 
amendment provides an early retirement window benefit that is a 
subsidized optional form of benefit under Sec. 1.401(a)(4)-3(b)(2)(iii) 
and that is available on the same terms to all employees who satisfy the 
eligibility requirements for the window. The early retirement window 
benefit is available only to employees who retire between June 1, 1994, 
and November 30, 1994.
    (b) Assume that Employees M, N, and O will be eligible to receive 
the window benefit by the end of the window period and Employees P, Q, 
and R will not. Because substantially all employees will not satisfy the 
eligibility requirements for the early retirement window benefit by the 
close of the early retirement window benefit period, Plan A fails to 
satisfy the uniform subsidies requirement of Sec. 1.401(a)(4)-
3(b)(2)(iii). See Sec. 1.401(a)(4)-3(b)(2)(vi), Example 6.

[[Page 162]]

    (c) Under paragraph (c)(2) of this section, Employees M, N, O, P, Q, 
and R may be grouped into two component plans, one consisting of 
Employees M, N, and O, and all their accruals and other benefits, 
rights, and features under the plan (including the early retirement 
window benefit), and another consisting of Employees P, Q, and R, and 
all their accruals and other benefits, rights, and features under the 
plan. Each of the component plans identified in this manner satisfies 
the uniform subsidies requirement of Sec. 1.401(a)(4)-3(b)(2)(iii), and 
thus satisfies Sec. 1.401(a)(4)-3(b). The entire plan satisfies section 
401(a)(4) under the rules of this paragraph (c), if each of these 
component plans also satisfies section 410(b) as if it were a separate 
plan (including, if applicable, the reasonable classification 
requirement of Sec. 1.410(b)-4(b), and taking into account the special 
rule of paragraph (c)(4)(i) of this section that forgives the average 
benefit percentage test in certain situations in which the average 
benefit percentage test would be required solely as a result of the 
early retirement window benefit).
    Example 3. (a) Employer Z maintains Plan B, a defined benefit plan 
with a benefit formula that provides two percent of average annual 
compensation for each year of service up to 20 to each employee. Assume 
that Plan B would satisfy the fractional accrual rule safe harbor in 
Sec. 1.401(a)(4)-3(b)(4), except that some employees accrue a portion 
of their normal retirement benefit in the current plan year that is more 
than one-third larger than the portion of the same benefit accrued by 
other employees for the current plan year, and the plan therefore fails 
to satisfy the one-third-larger requirement of Sec. 1.401(a)(4)-
3(b)(4)(i)(C)(1).
    (b) Employer Z restructures Plan B into two plans, one covering 
employees with 30 years or less of service at normal retirement age, and 
the other covering all other employees. Each component plan would 
separately satisfy the one-third-larger requirement of Sec. 
1.401(a)(4)-3(b)(4)(i)(C)(1) if the only employees taken into account 
were those employees included in the component plan in the current plan 
year. Under paragraph (c)(3)(i) of this section and Sec. 1.401(a)(4)-
3(b)(4)(i)(C)(1), however, the component plans do not satisfy the one-
third-larger requirement because the safe harbor determination is made 
taking into account the effect of the plan benefit formula on any 
potential employee in the component plan (other than employees with more 
than 33 years of service at normal retirement age), and not just those 
employees included in the component plan in the current plan year.

[T.D. 8485, 58 FR 46810, Sept. 3, 1993, as amended by T.D. 8954, 66 FR 
34544, June 29, 2001]