14.2 Calculating Benefiting Participants & The Ratio Percentage Test (70% Standard)

14.2 Calculating Benefiting Participants & The Ratio Percentage Test (70% Standard)

[!NOTE] The Objective 70% Safe-Harbor Benchmark To maintain tax-qualified status under IRC §401(a), a retirement plan must satisfy minimum coverage under IRC §410(b) for every plan year. The primary, most widely utilized method of compliance is the objective Ratio Percentage Test (RPT) codified at IRC §410(b)(1) and interpreted by Treas. Reg. §1.410(b)-2(b)(2). If a plan satisfies the RPT, it passes minimum coverage automatically, completely bypassing the complex subjective requirements of the two-part Average Benefits Test under §410(b)(2). The mathematical threshold is strict: the plan's Ratio Percentage must equal or exceed 70.00%.

While the mathematical formula for the Ratio Percentage Test appears elementary at first glance, the complexity for ASPPA QKA administrators lies in correctly identifying which employees are legally "benefiting" under the plan. Crucially, the legal test for whether a participant is benefiting differs fundamentally depending on whether the plan component being tested consists of 401(k) elective deferrals, 401(m) employer matching contributions, or discretionary profit-sharing allocations.

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The Legal Definition of "Benefiting": Treas. Reg. §1.410(b)-3

Under Treasury Regulation §1.410(b)-3, an employee is treated as benefiting under a plan for a plan year only if they satisfy the specific statutory criteria for the benefit component being tested:

+---------------------------------------------------------------------------------------------------+
|                         IRC §410(b) 'BENEFITING' DEFINITIONS BY PLAN COMPONENT                    |
+---------------------------------------------------------------------------------------------------+
|                                                                                                   |
|   [ 1. 401(k) ELECTIVE DEFERRAL COMPONENT (Treas. Reg. §1.410(b)-3(a)(2)(i)) ]                    |
|   • Standard: ELIGIBILITY TO CONTRIBUTE.                                                          |
|   • An employee is treated as benefiting if they are ELIGIBLE to make elective deferrals,          |
|     REGARDLESS of whether they actually make a deferral!                                          |
|   • A participant who defers $0 is legally BENEFITING for 401(k) coverage testing!                |
|                                                                                                   |
|   [ 2. 401(m) MATCHING CONTRIBUTION COMPONENT (Treas. Reg. §1.410(b)-3(a)(2)(i)) ]                |
|   • Standard: ELIGIBILITY TO RECEIVE A MATCH.                                                     |
|   • An employee is treated as benefiting if they are ELIGIBLE to receive an allocation of          |
|     matching contributions if they make an elective deferral.                                     |
|   • Even if the participant defers $0 and receives $0 matching dollars, they are BENEFITING!       |
|                                                                                                   |
|   [ 3. NONELECTIVE / PROFIT-SHARING COMPONENT (Treas. Reg. §1.410(b)-3(a)(1)) ]                   |
|   • Standard: ACTUAL ALLOCATION OR FORFEITURE RECEIVED.                                           |
|   • An employee is treated as benefiting ONLY if they receive an actual allocation of employer    |
|     nonelective contributions or forfeitures for the plan year.                                   |
|   • If an employee is eligible but fails an allocation condition (e.g., 1,000 hours or last-day    |
|     rule) and receives $0, they DO NOT BENEFIT for profit-sharing coverage testing!               |
|                                                                                                   |
+---------------------------------------------------------------------------------------------------+

[!IMPORTANT] The Elective Deferral Opportunity Rule: The rationale behind the 401(k) and 401(m) benefiting rules is that Congress intends to test whether employees are provided the opportunity to save on a tax-deferred basis. Whether an employee chooses to defer $15,000 or $0 is within their personal financial discretion. So long as the plan legally allows them to defer and be matched, they benefit for coverage testing. In contrast, employer nonelective profit-sharing contributions are controlled entirely by the employer; therefore, actual dollars allocated are required to "benefit."

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Mandatory Disaggregation of Plan Types: Treas. Reg. §1.410(b)-7(c)

A standard corporate 401(k) plan typically contains three distinct financial features:

1. Employee elective deferrals (pre-tax and Roth);
2. Employer matching contributions; and
3. Employer discretionary profit-sharing allocations.

Under Treas. Reg. §1.410(b)-7(c), a plan sponsor cannot test the entire plan as a single unified program. Instead, the regulations impose mandatory disaggregation: each component portion of the plan must be cleaved into a separate plan and tested independently for IRC §410(b) coverage:

• The 401(k) Portion: Must pass the RPT (or Average Benefits Test) independently;
• The 401(m) Portion: Must pass the RPT (or Average Benefits Test) independently; and
• The Profit-Sharing Portion: Must pass the RPT (or Average Benefits Test) independently.

If the 401(k) and 401(m) components pass with a 100% Ratio Percentage, but the profit-sharing component achieves only a 65% Ratio Percentage due to stringent allocation conditions, the profit-sharing portion fails IRC §410(b), threatening the qualified status of the entire plan!

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The Ratio Percentage Test Formula & Mechanics

The Ratio Percentage Test under IRC §410(b)(1) is computed through a four-step mathematical sequence:

Step 1: Calculate the NHCE Benefiting Percentage

Divide the number of non-excludable NHCEs who benefit under the plan component by the total number of non-excludable NHCEs in the testing group: $\text{NHCE Benefiting \%} = \frac{\text{Non-Excludable NHCEs Benefiting}}{\text{Total Non-Excludable NHCEs}} \times 100\%$

Step 2: Calculate the HCE Benefiting Percentage

Divide the number of non-excludable HCEs who benefit under the plan component by the total number of non-excludable HCEs in the testing group: $\text{HCE Benefiting \%} = \frac{\text{Non-Excludable HCEs Benefiting}}{\text{Total Non-Excludable HCEs}} \times 100\%$

Step 3: Compute the Ratio Percentage

Divide the NHCE Benefiting Percentage by the HCE Benefiting Percentage: $\text{Ratio Percentage} = \frac{\text{NHCE Benefiting \%}}{\text{HCE Benefiting \%}} \times 100\%$

Step 4: Evaluate Against the 70.00% Standard

• If $\text{Ratio Percentage} \ge 70.00%$, the plan component PASSES IRC §410(b).
• If $\text{Ratio Percentage} < 70.00%$, the plan component FAILS the Ratio Percentage Test (must pass the Average Benefits Test or execute a retroactive corrective amendment).

Special Statutory Circumstances

1. No HCEs Benefiting: If the HCE Benefiting Percentage is $0.00%$ (i.e., no HCEs benefit under that plan component), the denominator is zero. Under Treas. Reg. §1.410(b)-2(b)(6), the plan is deemed to satisfy the Ratio Percentage Test automatically (Ratio Percentage is treated as 100.00%).
2. No HCEs Employed: Under IRC §410(b)(6)(F), if the employer maintains no non-excludable HCEs during the plan year, the plan satisfies §410(b) automatically.
3. 100% of HCEs Benefiting: When all non-excludable HCEs benefit (the most common operational scenario in small business plans), the HCE Benefiting Percentage is $100.00%$. In that case, the Ratio Percentage simplifies directly to the NHCE Benefiting Percentage, which must be at least 70.00% (the classic 70% Test under IRC §410(b)(1)(A)).

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Step-by-Step Census Case Study: Apex Manufacturing Corp.

Apex Manufacturing Corp. sponsors the Apex 401(k) Profit-Sharing Plan for the 2025 calendar plan year. The plan terms specify:

• Eligibility: Age 21 and 1 Year of Service (1,000 hours).
• 401(k) Deferrals: All eligible participants may make elective deferrals.
• 401(m) Match: Employer matches 50% on deferrals up to 6% of compensation for all eligible participants.
• Profit-Sharing Allocation Conditions: To share in the discretionary profit-sharing contribution, a participant must complete 1,000 hours of service during the plan year AND be employed on December 31, 2025.

Apex employs 20 total employees during 2025. The full year-end census is detailed below:

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Dissecting the Census Data

1. Identifying Statutory Excludables (Treas. Reg. §1.410(b)-6)

• NHCE 14: Excluded under age rule (Age 19 < 21).
• NHCE 15: Excluded under service rule (4 months < 1 year).
• NHCE 16: Excluded under age and service rules.
• NHCE 13: Terminated on 04/15, completed 400 hours (≤ 500 hours), and failed allocation conditions. Excludable under Treas. Reg. §1.410(b)-6(f)!
• NHCE 9, 10, 11: All terminated during the year, but worked > 500 hours (1,400, 1,100, and 850 hours). NOT EXCLUDABLE.
• NHCE 12: Active on December 31, worked 750 hours. Active employees are never excludable under the 500-hour rule. NOT EXCLUDABLE.
• HCE 4: Terminated on 10/15, worked 1,800 hours (> 500 hours). NOT EXCLUDABLE.

2. Establishing the Non-Excludable Testing Universe

• Total Non-Excludable HCEs: 4 (HCE 1, HCE 2, HCE 3, HCE 4).
• Total Non-Excludable NHCEs: 12 (NHCE 1 through NHCE 12).

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Component 1: 401(k) Elective Deferral Coverage Test

Under Treas. Reg. §1.410(b)-3(a)(2)(i), an employee benefits if eligible to defer:

• HCEs Benefiting: All 4 non-excludable HCEs were eligible to defer (even HCE 3 who deferred $0). Benefiting = 4 of 4 = 100.00%.
• NHCEs Benefiting: All 12 non-excludable NHCEs were eligible to defer (including NHCE 3, 6, 8, 10 who deferred $0). Benefiting = 12 of 12 = 100.00%.

$\text{Ratio Percentage} = \frac{100.00\%}{100.00\%} \times 100\% = \mathbf{100.00\%}$ Result: PASSES the Ratio Percentage Test ($100.00% \ge 70.00%$).

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Component 2: 401(m) Employer Match Coverage Test

Under Treas. Reg. §1.410(b)-3(a)(2)(i), an employee benefits if eligible to receive a match upon deferring:

• HCEs Benefiting: All 4 non-excludable HCEs were eligible for the match = 100.00%.
• NHCEs Benefiting: All 12 non-excludable NHCEs were eligible for the match = 100.00%.

$\text{Ratio Percentage} = \frac{100.00\%}{100.00\%} \times 100\% = \mathbf{100.00\%}$ Result: PASSES the Ratio Percentage Test ($100.00% \ge 70.00%$).

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Component 3: Employer Profit-Sharing Allocation Coverage Test

Under Treas. Reg. §1.410(b)-3(a)(1), an employee benefits ONLY if they receive an actual allocation or forfeiture:

• HCEs Benefiting:
  • HCE 1, HCE 2, HCE 3 satisfied both 1,000 hours and last-day rules $\rightarrow$ Received allocation.
  • HCE 4 terminated on 10/15 $\rightarrow$ Missed last-day rule $\rightarrow$ Received $0.
  • HCEs Benefiting = 3 out of 4 = 75.00%.
• NHCEs Benefiting:
  • NHCE 1, 2, 3, 4, 5, 6, 7, 8 satisfied both 1,000 hours and last-day rules $\rightarrow$ Received allocation (8 benefiting).
  • NHCE 9, 10, 11 terminated before last day $\rightarrow$ Received $0 (0 benefiting).
  • NHCE 12 worked 750 hours (failed 1,000-hour rule) $\rightarrow$ Received $0 (0 benefiting).
  • NHCEs Benefiting = 8 out of 12 = 66.67%.

$\text{Ratio Percentage} = \frac{66.67\%}{75.00\%} \times 100\% = \mathbf{88.89\%}$ Result: PASSES the Ratio Percentage Test ($88.89% \ge 70.00%$).

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Failing Scenario: The Danger of Full HCE Allocation

Now consider what would happen if HCE 4 had NOT terminated, but remained employed through December 31, receiving a profit-sharing allocation. Look at the dramatic shift in numbers:

• HCEs Benefiting: 4 out of 4 = 100.00%.
• NHCEs Benefiting: Still 8 out of 12 = 66.67%.

$\text{Ratio Percentage} = \frac{66.67\%}{100.00\%} \times 100\% = \mathbf{66.67\%}$ Result: FAILS the Ratio Percentage Test ($66.67% < 70.00%$).

Because the plan failed the RPT for the profit-sharing component, the plan must either:

1. Pass the complex, subjective Average Benefits Test under IRC §410(b)(2); OR
2. Utilize a failsafe allocation provision or retroactive amendment under Treas. Reg. §1.401(a)(4)-11(g) to waive the 1,000-hour or last-day requirement for enough NHCEs (e.g., granting allocations to NHCE 12 and NHCE 9) to bring the NHCE benefiting percentage up to at least $70.00%$.

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Common ASPPA QKA Calculation & Exam Traps

• Exam Trap 1: Conflating 401(k) Deferrals with Profit-Sharing Benefiting Rules: A classic exam question presents participants who elected not to defer in a 401(k) plan and asks for the 401(k) ratio percentage. Candidates count non-deferring participants as "not benefiting." Remember: for 401(k) CODAs and 401(m) matching, opportunity equals benefiting. Zero deferrals do not reduce the numerator!
• Exam Trap 2: Neglecting Mandatory Disaggregation: An exam problem provides a 401(k) plan with discretionary profit-sharing and asks if the "plan passes coverage." Candidates average the deferral and profit-sharing numbers together. Under Treas. Reg. §1.410(b)-7(c), each component must be tested separately. Averaging them into a single test is illegal.
• Exam Trap 3: Miscalculating the Ratio Percentage Denominator: Candidates often calculate the ratio by dividing NHCE benefiting participants by total participants, or dividing NHCE benefiting by HCE benefiting. The Ratio Percentage is a ratio of ratios: $\frac{\text{NHCE Benefiting %}}{\text{HCE Benefiting %}}$. If HCE Benefiting % is 80% and NHCE Benefiting % is 60%, the ratio is $60% / 80% = 75%$, not $60%$.
• Exam Trap 4: Treating Terminated >500 Hour Participants as Zeroes in Denominator: When a participant terminates with 700 hours and misses an allocation condition, candidates often remove them from the entire test. They must remain in the denominator of the NHCE benefiting ratio, driving down the percentage.