Code of Federal Regulations · Section
§ 1.401(k)-4 — (k)-4 Simple 401(k) Plan Requirements
26 C.F.R. § 1.401(k)-4
(a) General rule. A cash or deferred arrangement satisfies the SIMPLE 401(k) plan provision of section 401(k)(11) for a plan year if the arrangement satisfies the requirements of paragraphs (b) through (i) of this section for that year. A plan that contains a cash or deferred arrangement that satisfies this section is referred to as a SIMPLE 401(k) plan. Pursuant to section 401(k)(11), a SIMPLE 401(k) plan is treated as satisfying the ADP test of section 401(k)(3)(A)(ii) for that year.
(b) Eligible employer—(1) General rule. A SIMPLE 401(k) plan must be established by an eligible employer. Eligible employer for purposes of this section means, with respect to any plan year, an employer that had no more than 100 employees who each received at least $5,000 of SIMPLE compensation, as defined in paragraph (e)(5) of this section, from the employer for the prior calendar year.
(2) Special rule. An eligible employer that establishes a SIMPLE 401(k) plan for a plan year and that fails to be an eligible employer for any subsequent plan year, is treated as an eligible employer for the 2 plan years following the last plan year the employer was an eligible employer. If the failure is due to any acquisition, disposition, or similar transaction involving an eligible employer, the preceding sentence applies only if the provisions of section 410(b)(6)(C)(i) are satisfied.
(c) Exclusive plan—(1) General rule. The SIMPLE 401(k) plan must be the exclusive plan for each SIMPLE 401(k) plan participant for the plan year. This requirement is satisfied if there are no contributions made, or benefits accrued, for services during the plan year on behalf of any SIMPLE 401(k) plan participant under any other qualified plan maintained by the employer. Other qualified plan for purposes of this section means any plan, contract, pension, or trust described in section 219(g)(5)(A) or (B).
(2) Special rule. A SIMPLE 401(k) plan will not be treated as failing the requirements of this paragraph (c) merely because any SIMPLE 401(k) plan participant receives an allocation of forfeitures under another plan of the employer.
(d) Election and notice—(1) General rule. An eligible employer establishing or maintaining a SIMPLE 401(k) plan must satisfy the election and notice requirements in paragraphs (d)(2) and (3) of this section.
(2) Employee elections—(i) Initial plan year of participation. For the plan year in which an employee first becomes eligible under the SIMPLE 401(k) plan, the employee must be permitted to make a cash or deferred election under the plan during a 60-day period that includes either the day the employee becomes eligible or the day before.
(ii) Subsequent plan years. For each subsequent plan year, each eligible employee must be permitted to make or modify his cash or deferred election during the 60-day period immediately preceding such plan year.
(iii) Election to terminate. An eligible employee must be permitted to terminate his cash or deferred election at any time. If an employee does terminate his cash or deferred election, the plan is permitted to provide that such employee cannot have elective contributions made under the plan for the remainder of the plan year.
(3) Employee notices. The employer must notify each eligible employee within a reasonable time prior to each 60-day election period, or on the day the election period starts, that he or she can make a cash or deferred election, or modify a prior election, if applicable, during that period. The notice must state whether the eligible employer will make the matching contributions described in paragraph (e)(3) of this section or the nonelective contributions described in paragraph (e)(4) of this section.
(e) Contributions—(1) General rule. A SIMPLE 401(k) plan satisfies the contribution requirements of this paragraph (e) for a plan year only if no contributions may be made to the SIMPLE 401(k) plan during such year, other than contributions described in this paragraph (e) and rollover contributions described in § 1.402(c)-2(a).
(2) Elective contributions. Subject to the limitations on annual additions under section 415, each eligible employee must be permitted to make an election to have up to $10,000 of elective contributions made on the employee's behalf under the SIMPLE 401(k) plan for a plan year. The $10,000 limit is increased beginning in 2006 in the same manner as the $160,000 amount is adjusted under section 415(d), except that pursuant to section 408(p)(2)(E)(ii) the base period shall be the calendar quarter beginning July 1, 2004 and any increase which is not a multiple of $500 is rounded to the next lower multiple of $500.
(3) Matching contributions. Each plan year, the eligible employer must contribute a matching contribution to the account of each eligible employee on whose behalf elective contributions were made for the plan year. The amount of the matching contribution must equal the lesser of the eligible employee's elective contributions for the plan year or 3% of the eligible employee's SIMPLE compensation for the entire plan year.
(4) Nonelective contributions. For any plan year, in lieu of contributing matching contributions described in paragraph (e)(3) of this section, an eligible employer may, in accordance with plan terms, contribute a nonelective contribution to the account of each eligible employee in an amount equal to 2% of the eligible employee's SIMPLE compensation for the entire plan year. The eligible employer may limit the nonelective contributions to those eligible employees who received at least $5,000 of SIMPLE compensation from the employer for the entire plan year.
(5) SIMPLE compensation. Except as otherwise provided, the term SIMPLE compensation for purposes of this section means the sum of wages, tips, and other compensation from the eligible employer subject to federal income tax withholding (as described in section 6051(a)(3)) and the employee's elective contributions made under any other plan, and if applicable, elective deferrals under a section 408(p) SIMPLE IRA plan, a section 408(k)(6) SARSEP, or a plan or contract that satisfies the requirements of section 403(b), and compensation deferred under a section 457 plan, required to be reported by the employer on Form W-2 (as described in section 6051(a)(8)). For self-employed individuals, SIMPLE compensation means net earnings from self-employment determined under section 1402(a) prior to subtracting any contributions made under the SIMPLE 401(k) plan on behalf of the individual.
(f) Vesting. All benefits attributable to contributions described in paragraph (e) of this section must be nonforfeitable at all times.
(g) Plan year. The plan year of a SIMPLE 401(k) plan must be the whole calendar year. Thus, in general, a SIMPLE 401(k) plan can be established only on January 1 and can be terminated only on December 31. However, in the case of an employer that did not previously maintain a SIMPLE 401(k) plan, the establishment date can be as late as October 1 (or later in the case of an employer that comes into existence after October 1 and establishes the SIMPLE 401(k) plan as soon as administratively feasible after the employer comes into existence).
(h) Other rules. A SIMPLE 401(k) plan is not treated as a top-heavy plan under section 416. See section 416(g)(4)(G).
Authorizing Statute
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Rules and regulations26 U.S.C. § 7805
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Advanced manufacturing production credit26 U.S.C. § 45X
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Alcohol, etc., used as fuel26 U.S.C. § 40
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Gross income defined26 U.S.C. § 61
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Transfers of excess pension assets to retiree health accounts26 U.S.C. § 420
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Partial exclusion for gain from certain small business stock26 U.S.C. § 1202
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Tax treatment of stripped bonds26 U.S.C. § 1286
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Current taxation of income from qualified electing funds26 U.S.C. § 1293
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Imposition of tax on certain foreign procurement26 U.S.C. § 5000C
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Returns regarding payments of interest26 U.S.C. § 6049
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Signing of returns and other documents26 U.S.C. § 6061
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General requirement of return, statement, or list26 U.S.C. § 6011
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Income from discharge of indebtedness26 U.S.C. § 108
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Indian general welfare benefits26 U.S.C. § 139E
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Bonds must be registered to be tax exempt; other requirements26 U.S.C. § 149
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Trade or business expenses26 U.S.C. § 162
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Accelerated cost recovery system26 U.S.C. § 168
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Amortizable bond premium26 U.S.C. § 171
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Golden parachute payments26 U.S.C. § 280G
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Distributions of stock and stock rights26 U.S.C. § 305
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Transfer to corporation controlled by transferor26 U.S.C. § 351
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Special rules for long-term contracts26 U.S.C. § 460
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Determination of basis of partner’s interest26 U.S.C. § 705
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Taxes of foreign countries and of possessions of United States26 U.S.C. § 901
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Controlled foreign corporations; United States persons26 U.S.C. § 957
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New energy efficient home credit26 U.S.C. § 45L
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2-percent floor on miscellaneous itemized deductions26 U.S.C. § 67
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Certain death benefits26 U.S.C. § 101
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Qualified business income26 U.S.C. § 199A
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Installment method26 U.S.C. § 453
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Certain payments for the use of property or services26 U.S.C. § 467
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Partners, not partnership, subject to tax26 U.S.C. § 701
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Extent of recognition of gain or loss on distribution26 U.S.C. § 731
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Capitalization of certain policy acquisition expenses26 U.S.C. § 848
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Special rules for determining source26 U.S.C. § 863
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Income of foreign governments and of international organizations26 U.S.C. § 892
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Definitions and special rules26 U.S.C. § 6241
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Computation and payment of tax26 U.S.C. § 1503
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Adjusted gross income defined26 U.S.C. § 62
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Treatment of loans with below-market interest rates26 U.S.C. § 7872
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Basis to distributees26 U.S.C. § 358
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Minimum participation standards26 U.S.C. § 410
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Other definitions and special rules26 U.S.C. § 860G
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Adjustments required by changes in method of accounting26 U.S.C. § 481
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Definitions26 U.S.C. § 7701
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Insurance income26 U.S.C. § 953
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Returns relating to actions affecting basis of specified securities26 U.S.C. § 6045B
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Information relating to certain trusts and annuity plans26 U.S.C. § 6047
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Enhanced oil recovery credit26 U.S.C. § 43
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Energy efficient commercial buildings deduction26 U.S.C. § 179D
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Redemption through use of related corporations26 U.S.C. § 304
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Certain stock purchases treated as asset acquisitions26 U.S.C. § 338
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Special limitations on certain excess credits, etc.26 U.S.C. § 383
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Optional treatment of elective deferrals as Roth contributions26 U.S.C. § 402A
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General rule for taxable year of inclusion26 U.S.C. § 451
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Qualified ABLE programs26 U.S.C. § 529A
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Charitable remainder trusts26 U.S.C. § 664
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Nonrecognition of gain or loss on contribution26 U.S.C. § 721
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Investment of earnings in United States property26 U.S.C. § 956
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Definitions and special rule26 U.S.C. § 1377
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Relief from joint and several liability on joint return26 U.S.C. § 6015
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Return of S corporation26 U.S.C. § 6037
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Notice of certain transfers to foreign persons26 U.S.C. § 6038B
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Information at source26 U.S.C. § 6041
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Imposition of accuracy-related penalty on underpayments26 U.S.C. § 6662
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Tax imposed26 U.S.C. § 1
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Railroad track maintenance credit26 U.S.C. § 45G
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Zero-emission nuclear power production credit26 U.S.C. § 45U
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Rehabilitation credit26 U.S.C. § 47
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Clean electricity investment credit26 U.S.C. § 48E
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Special rules26 U.S.C. § 52
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Election to expense certain depreciable business assets26 U.S.C. § 179
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Individual retirement accounts26 U.S.C. § 408
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Special rules for nondealers26 U.S.C. § 453A
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Deductions limited to amount at risk26 U.S.C. § 465
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Exemption from tax on corporations, certain trusts, etc.26 U.S.C. § 501
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Definition of regulated investment company26 U.S.C. § 851
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Source rules for personal property sales26 U.S.C. § 865
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Tax on nonresident alien individuals26 U.S.C. § 871
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Foreign base company income26 U.S.C. § 954
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S corporation defined26 U.S.C. § 1361
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Definitions26 U.S.C. § 1402
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Distributions of property26 U.S.C. § 301
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Life insurance contract defined26 U.S.C. § 7702
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Previously-owned clean vehicles26 U.S.C. § 25E
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Electricity produced from certain renewable resources, etc.26 U.S.C. § 45
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Clean fuel production credit26 U.S.C. § 45Z
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Taxation of employee annuities26 U.S.C. § 403
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Last-in, first-out inventories26 U.S.C. § 472
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Allocation of income and deductions among taxpayers26 U.S.C. § 482
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Definitions applicable to subparts A, B, C, and D26 U.S.C. § 643
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Taxable years of partner and partnership26 U.S.C. § 706
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Disposition of investment in United States real property26 U.S.C. § 897
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Administrative adjustment request by partnership26 U.S.C. § 6227
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Citizens or residents of the United States living abroad26 U.S.C. § 911
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Residence and source rules involving possessions26 U.S.C. § 937
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Rules relating to expatriated entities and their foreign parents26 U.S.C. § 7874
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Regulations26 U.S.C. § 1502
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Capitalization and inclusion in inventory costs of certain expenses26 U.S.C. § 263A
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Foreign corporations26 U.S.C. § 367
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Roth IRAs26 U.S.C. § 408A
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Minimum vesting standards26 U.S.C. § 411
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Partner’s distributive share26 U.S.C. § 704
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Unrealized receivables and inventory items26 U.S.C. § 751
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Taxation of residual interests26 U.S.C. § 860C
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Exclusions from gross income26 U.S.C. § 883
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Income affected by treaty26 U.S.C. § 894
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Other definitions and special rules26 U.S.C. § 989
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Special rules26 U.S.C. § 1474
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Returns of brokers26 U.S.C. § 6045
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Information returns of tax return preparers26 U.S.C. § 6060
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Authority to make credits or refunds26 U.S.C. § 6402
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Failure by individual to pay estimated income tax26 U.S.C. § 6654
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Interest on certain home mortgages26 U.S.C. § 25
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Credit for qualified commercial clean vehicles26 U.S.C. § 45W
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Interest on State and local bonds26 U.S.C. § 103
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Qualified lessee construction allowances for short-term leases26 U.S.C. § 110
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Losses26 U.S.C. § 165
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Charitable, etc., contributions and gifts26 U.S.C. § 170
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Incentive stock options26 U.S.C. § 422
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Deemed paid credit for subpart F inclusions26 U.S.C. § 960
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Election of mark to market for marketable stock26 U.S.C. § 1296
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Returns relating to certain life insurance contract transactions26 U.S.C. § 6050Y
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Clean vehicle credit26 U.S.C. § 30D
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Credit for carbon oxide sequestration26 U.S.C. § 45Q
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Amount of credit26 U.S.C. § 46
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Advanced manufacturing investment credit26 U.S.C. § 48D
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Arbitrage26 U.S.C. § 148
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Amortization of goodwill and certain other intangibles26 U.S.C. § 197
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Interest on education loans26 U.S.C. § 221
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Disallowance of certain entertainment, etc., expenses26 U.S.C. § 274
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Qualifications for tax credit employee stock ownership plans26 U.S.C. § 409
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Unrelated debt-financed income26 U.S.C. § 514
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Rules for allocation of basis26 U.S.C. § 755
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Rules for certain reserves26 U.S.C. § 807
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Special rules in case of foreign oil and gas income26 U.S.C. § 907
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Basis of property acquired from a decedent26 U.S.C. § 1014
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Special rules26 U.S.C. § 1298
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Definitions26 U.S.C. § 3401
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Extension of time for filing returns26 U.S.C. § 6081
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Renumbered § 45C]26 U.S.C. § 28
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Credit for production of clean hydrogen26 U.S.C. § 45V
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Energy credit26 U.S.C. § 48
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Limitation on credit26 U.S.C. § 904
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Qualified pension, profit-sharing, and stock bonus plans26 U.S.C. § 401
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Dependent care assistance programs26 U.S.C. § 129
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Special rules for nuclear decommissioning costs26 U.S.C. § 468A
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Mark to market accounting method for dealers in securities26 U.S.C. § 475
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Basis of distributed property other than money26 U.S.C. § 732
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Straddles26 U.S.C. § 1092
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Qualified electing fund26 U.S.C. § 1295
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Averaging of farm income26 U.S.C. § 1301
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Withholdable payments to foreign financial institutions26 U.S.C. § 1471
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Definitions26 U.S.C. § 1504
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Basis information to persons acquiring property from decedent26 U.S.C. § 6035
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Information with respect to certain foreign-owned corporations26 U.S.C. § 6038A
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Returns relating to cash received in trade or business, etc.26 U.S.C. § 6050I
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Credit for increasing research activities26 U.S.C. § 41
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Definitions and special rules26 U.S.C. § 150
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Passive activity losses and credits limited26 U.S.C. § 469
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Certain expenses for which credits are allowable26 U.S.C. § 280C
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Assumption of liability26 U.S.C. § 357
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Complete liquidations of subsidiaries26 U.S.C. § 332
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Distribution of stock and securities of a controlled corporation26 U.S.C. § 355
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Period for computation of taxable income26 U.S.C. § 441
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General rule for taxable year of deduction26 U.S.C. § 461
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Special rules for modified guaranteed contracts26 U.S.C. § 817A
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Treatment of variable contracts26 U.S.C. § 817
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Certain reinsurance agreements26 U.S.C. § 845
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Failure to file notice of redetermination of foreign tax26 U.S.C. § 6689
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Branch transactions26 U.S.C. § 987
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Qualified zone property defined26 U.S.C. § 1397D
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Withholdable payments to other foreign entities26 U.S.C. § 1472
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Liquidating, etc., transactions26 U.S.C. § 6043
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Verification of returns26 U.S.C. § 6065
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Mode or time of collection26 U.S.C. § 6302
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Transfer of certain credits26 U.S.C. § 6418
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American Opportunity and Lifetime Learning credits26 U.S.C. § 25A
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Refundable credit for coverage under a qualified health plan26 U.S.C. § 36B
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Clean electricity production credit26 U.S.C. § 45Y
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Other special rules26 U.S.C. § 50
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Treatment of community income26 U.S.C. § 66
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Basis to corporations26 U.S.C. § 362
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Election of taxable year other than required taxable year26 U.S.C. § 444
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Transactions between partner and partnership26 U.S.C. § 707
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Special allocation rules for certain asset acquisitions26 U.S.C. § 1060
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Discounted unpaid losses defined26 U.S.C. § 846
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Definitions and special rules26 U.S.C. § 864
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Capital asset defined26 U.S.C. § 1221
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Interest on tax deferral26 U.S.C. § 1291
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Passive foreign investment company26 U.S.C. § 1297
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Withholding of tax on nonresident aliens26 U.S.C. § 1441
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Returns as to interests in foreign partnerships26 U.S.C. § 6046A
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State and local income tax refunds26 U.S.C. § 6050E
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Returns relating to exchanges of certain partnership interests26 U.S.C. § 6050K
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Returns relating to higher education tuition and related expenses26 U.S.C. § 6050S
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Reporting of health insurance coverage26 U.S.C. § 6055
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Low-income housing credit26 U.S.C. § 42
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New markets tax credit26 U.S.C. § 45D
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Definitions and special rules26 U.S.C. § 414
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Qualified asset account; limitation on additions to account26 U.S.C. § 419A
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General rule for methods of accounting26 U.S.C. § 446
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Interest on certain deferred payments26 U.S.C. § 483
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Reserves for losses on loans of banks26 U.S.C. § 585
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Certain revocable trusts treated as part of estate26 U.S.C. § 645
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Insurance company taxable income26 U.S.C. § 832
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Income from sources within the United States26 U.S.C. § 861
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Treatment of certain foreign currency transactions26 U.S.C. § 988
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Functional currency26 U.S.C. § 985
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Other definitions and special rules26 U.S.C. § 1275
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Election to extend time for payment of tax on undistributed earnings26 U.S.C. § 1294
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Requirement to maintain minimum essential coverage26 U.S.C. § 5000A
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Returns by exempt organizations26 U.S.C. § 6033
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Information with respect to foreign financial assets26 U.S.C. § 6038D
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Returns relating to the cancellation of indebtedness by certain entities26 U.S.C. § 6050P
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Identifying numbers26 U.S.C. § 6109
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Elective payment of applicable credits26 U.S.C. § 6417
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Certain fringe benefits26 U.S.C. § 132
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Dependent defined26 U.S.C. § 152
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Interest26 U.S.C. § 163
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Bad debts26 U.S.C. § 166
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Special rules for credits and deductions26 U.S.C. § 642
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General rule for inventories26 U.S.C. § 471
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Political organizations26 U.S.C. § 527
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Special rules applicable to sections 661 and 66226 U.S.C. § 663
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Allowance of deductions and credits26 U.S.C. § 874
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Branch profits tax26 U.S.C. § 884
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Tax imposed on certain built-in gains26 U.S.C. § 1374
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Foreign tax-exempt organizations26 U.S.C. § 1443
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Valuation tables26 U.S.C. § 7520
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Losses on small business stock26 U.S.C. § 1244
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Distributions26 U.S.C. § 1368
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Definitions26 U.S.C. § 1473
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Information with respect to certain fines, penalties, and other amounts26 U.S.C. § 6050X
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Failure by corporation to pay estimated income tax26 U.S.C. § 6655