Treasury Regulations · 26 CFR
§ 1.410(b)-0. Table of contents.
Regulation text, no changes From the eCFR, current as of October 15, 2026. The eCFR is an authoritative but unofficial editorial compilation of the Code of Federal Regulations; the official text is the annual CFR on govinfo. Compare it with this section on ecfr.gov (external site) or the official annual CFR on govinfo (external site).
Regulation under 26 U.S.C. § 410(b)
Cite as 26 CFR § 1.410(b)-0
At a glance
Read from the text and its source citation. Not part of the regulation.
- Status
- In the current eCFR
- Issued
- September 19, 1991 by T.D. 8363
- Last amended
- March 14, 2019 by T.D. 9849
- Issued under
- 26 U.S.C. § 410(b)
- Length
- 944 words · about 4 min to read
- Cross-references
- cites 4 Code sections and 9 regulations; cited by 0
This section contains a listing of the major headings of §§ 1.410(b)-2 through 1.410(b)-10.
(a) In general.
(b) Requirements with respect to employees.
(1) In general.
(2) Ratio percentage test.
(i) In general.
(ii) Examples.
(3) Average benefit test.
(4) Certain tax credit employee stock ownership plans.
(5) Employers with no nonhighly compensated employees.
(6) Plans benefiting no highly compensated employees.
(7) Plans benefiting collectively bargained employees.
(c) Requirements with respect to former employees.
(1) Former employees tested separately.
(2) Testing former employees.
(d) Nonelective contributions under section 403(b) plans.
(e) Certain governmental and church plans.
(f) Certain acquisitions or dispositions.
(g) Additional rules.
§ 1.410(b)-3 Employees and former employees who benefit under a plan.(a) Employees benefiting under a plan.
(1) In general.
(2) Exceptions to allocation or accrual requirement.
(i) Section 401(k) and 401(m) plans.
(ii) Section 415 limits.
(iii) Certain employees treated as benefiting.
(iv) Section 412(i) plans.
(3) Examples.
(b) Former employees benefiting under a plan.
(1) In general.
(2) Examples.
§ 1.410(b)-4 Nondiscriminatory classification test.(a) In general.
(b) Reasonable classification established by the employer.
(c) Nondiscriminatory classification.
(1) General rule.
(2) Safe harbor.
(3) Facts and circumstances.
(i) General rule.
(ii) Factual determination.
(4) Definitions.
(i) Safe harbor percentage.
(ii) Unsafe harbor percentage.
(iii) Nonhighly compensated employee concentration percentage.
(iv) Table.
(5) Examples.
§ 1.410(b)-5 Average benefit percentage test.(a) General rule.
(b) Determination of average benefit percentage.
(c) Determination of actual benefit percentage.
(d) Determination of employee benefit percentages.
(1) Overview.
(2) Employee contributions and employee-provided benefits disregarded.
(3) Plans and plan years taken into account.
(i) Testing group.
(ii) Testing period.
(4) Contributions or benefits basis.
(5) Determination of employee benefit percentage.
(i) General rule.
(ii) Plans with differing plan years.
(iii) Options and consistency requirements.
(6) Permitted disparity.
(i) In general.
(ii) Plans which may not use permitted disparity.
(7) Requirements for certain plans providing early retirement benefits.
(i) General rule.
(ii) Exception.
(e) Additional optional rules.
(1) Overview.
(2) Determination of employee benefit percentages as the sum of separately determined rates.
(i) In general.
(ii) Exception from consistency requirement.
(iii) Permitted inconsistencies.
(3) Determination of employee benefit percentages without regard to plans of another type.
(i) General rule.
(ii) Restriction on use of separate testing group determination method.
(iii) Treatment of permitted disparity.
(iv) Example.
(4) Simplified method for determining employee benefit percentages for certain defined benefit plans.
(i) In general.
(ii) Simplified method.
(5) Three-year averaging period.
(6) Alternative methods of determining compensation.
(f) Special rule for certain collectively bargained plans.
§ 1.410(b)-6 Excludable employees.(a) Employees.
(1) In general.
(2) Rules of application.
(b) Minimum age and service exclusions.
(1) In general.
(2) Multiple age and service conditions.
(3) Plans benefiting certain otherwise excludable employees.
(i) In general.
(ii) Testing portion of plan benefiting otherwise excludable employees.
(4) Examples.
(c) Certain nonresident aliens.
(1) General rule.
(2) Special treaty rule.
(d) Collectively bargained employees.
(1) General rule.
(2) Definition of collectively bargained employee.
(1) In general.
(ii) Special rules for certain employees in multiemployer plans.
(iii) Covered by a collective bargaining agreement.
(iv) Examples.
(e) Employees of qualified separate lines of business.
(f) Certain terminating employees.
(1) In general.
(2) Hours of service.
(3) Examples.
(g) Employees of certain governmental or tax-exempt entities.
(1) Plans covered.
(2) Employees of governmental entities.
(3) Employees of tax-exempt entities.
(h) Former employees.
(1) In general.
(2) Employees terminated before a specified date.
(3) Previously excludable employees.
(i) Former employees treated as employees.
§ 1.410(b)-7 Definition of plan and rules governing plan disaggregation and aggregation.(a) In general.
(b) Separate asset pools are separate plans.
(c) Mandatory disaggregation of certain plans.
(1) Section 401(k) and section 401(m) plans.
(2) ESOPs and non-ESOPs.
(3) Plans benefiting otherwise excludable employees.
(4) Plans benefiting certain disaggregation populations of employees.
(i) In general.
(ii) Definition of disaggregation population.
(5) Additional rules for plans benefiting employees of more than one qualified separate line of business.
(d) Permissive aggregation for ratio percentage and nondiscriminatory classification tests.
(1) In general.
(2) Rules of disaggregation.
(3) Duplicative aggregation.
(4) Special rule for plans benefiting employees of a qualified separate line of business.
(5) Same plan year requirement.
(e) Determination of plans in testing group for average benefit percentage test.
(1) In general.
(2) Example.
(f) Section 403(b) plans.
§ 1.410(b)-8 Additional rules.(a) Testing methods.
(1) In general.
(2) Daily testing option.
(3) Quarterly testing option.
(4) Annual testing option.
(5) Example.
(b) Family member aggregation rule.
§ 1.410(b)-9 Definitions.Collectively bargained employee.
Defined benefit plan.
Defined contribution plan.
Employee.
Employer.
ESOP.
Former employee.
Highly compensated employee.
Highly compensated former employee.
Multiemployer plan.
Noncollectively bargained employee.
Nonhighly compensated employee.
Nonhighly compensated former employee.
Plan year.
Plan year compensation.
Professional employee.
Ratio percentage.
Section 401(k) plan.
Section 401(l) plan.
Section 401(m) plan.
§ 1.410(b)-10 Effective dates and transition rules.(a) Statutory effective dates.
(1) In general.
(2) Special statutory effective date for collective bargaining agreements.
(i) In general.
(ii) Example.
(iii) Plan maintained pursuant to a collective bargaining agreement.
(b) Regulatory effective dates.
(1) In general.
(2) Plans of tax-exempt organizations.
(c) Compliance during transition period.
(d) Effective date for governmental plans.
[T.D. 8363, 56 FR 47641, Sept. 19, 1991; 57 FR 10954, Mar. 31, 1992, as amended by T.D. 8487, 58 FR 46838, Sept. 3, 1993; T.D. 8548, 59 FR 32914, June 27, 1994; T.D. 9275, 71 FR 41359, July 21, 2006; T.D. 9849, 84 FR 9234, Mar. 14, 2019]
Cross-references
Computed from the citations in the text of 26 CFR.
Code sections it cites
- § 403 Taxation of employee annuities
- § 401 Qualified pension, profit-sharing, and stock bonus plans
- § 415 Limitations on benefits and contribution under qualified plans
- § 412 Minimum funding standards
Regulations it cites
- § 1.410(b)-2 Minimum coverage requirements (after 1993).
- § 1.410(b)-3 Employees and former employees who benefit under a plan.
- § 1.410(b)-4 Nondiscriminatory classification test.
- § 1.410(b)-5 Average benefit percentage test.
- § 1.410(b)-6 Excludable employees.
- § 1.410(b)-7 Definition of plan and rules governing plan disaggregation and aggregation.
- § 1.410(b)-8 Additional rules.
- § 1.410(b)-9 Definitions.
- § 1.410(b)-10 Effective dates and transition rules.
Amendment history
From the source citation at the end of the section, newest first. T.D. is a Treasury decision; FR is the Federal Register.
- Amended by T.D. 9849 (84 FR 9234)
- Amended by T.D. 9275 (71 FR 41359)
- Amended by T.D. 8548 (59 FR 32914)
- Amended by T.D. 8487 (58 FR 46838)
- Amended (57 FR 10954)
- Issued by T.D. 8363 (56 FR 47641)
Where it sits in 26 CFR
- Subchapter A Income tax
- Part 1 Income taxes
- Pension, Profit-Sharing, Stock Bonus Plans, etc.
Nearby sections
- § 1.410(a)-8 Five consecutive 1-year breaks in service, transitional rules under the Retirement Equity Act of 1984.
- § 1.410(a)-8T Year of service; break in service (temporary).
- § 1.410(a)-9 Maternity and paternity absence.
- § 1.410(a)-9T Elapsed time (temporary).
- § 1.410(b)-0 Table of contents.
- § 1.410(b)-2 Minimum coverage requirements (after 1993).
- § 1.410(b)-3 Employees and former employees who benefit under a plan.
- § 1.410(b)-4 Nondiscriminatory classification test.
- § 1.410(b)-5 Average benefit percentage test.