Adding Kids (and Accidentally Blowing Up Your Retirement Plan)

How Young Family Members Can Affect 401(k) Profit Sharing Allocations

Hiring children into the family business is a common and often smart tax strategy. Many owners bring their teenage children into the company to learn the business, earn income, and begin saving early. When a retirement plan is involved, especially one using flexible profit sharing allocations, the presence of very young participants can influence how the plan performs during nondiscrimination testing.

Understanding how age affects retirement plan testing helps business owners plan ahead and maintain flexibility in their contribution strategy.

Retirement plans operate under rules designed to ensure benefits are distributed fairly across participants. Those rules involve projecting the value of contributions to retirement age. Because younger employees have a longer period for compounding growth, their projected benefit value can become significantly larger than the same contribution allocated to someone closer to retirement.

For business owners who employ their children, this dynamic becomes an important part of retirement plan design.

Why Age Matters in Retirement Plan Testing

Many profit sharing plans project the value of contributions forward to retirement age during nondiscrimination testing. This process allows regulators to compare how benefits are distributed between highly compensated employees and other participants.

The projection assumes a reasonable interest rate and calculates what the current contribution may represent as a retirement benefit.

A younger employee has a longer timeline between the contribution year and retirement. That longer compounding window increases the projected value of the benefit used in testing calculations.

The table below illustrates how a contribution allocated today can grow when projected to retirement age.

The contribution is identical for each participant today. The projected retirement benefit increases significantly as the participant’s age decreases because the compounding period grows longer.

When a teenage child becomes a participant in a retirement plan, the projection period becomes even longer. That extended compounding window can influence the outcome of nondiscrimination testing and the contribution levels available to the business owner.

Planning ahead allows the retirement plan to maintain flexibility while supporting family participation in the business.

Using New Comparability Profit Sharing for Greater Flexibility

Many businesses use a New Comparability profit sharing allocation to structure employer contributions strategically.

New Comparability allocations allow the plan sponsor to determine contribution percentages for groups of employees or for individual participants, subject to regulatory minimums. This approach provides meaningful flexibility when aligning retirement contributions with the structure of the business.

Because of that flexibility, New Comparability allocations involve additional nondiscrimination testing. Those tests evaluate the projected retirement benefits across participants and ensure the allocations remain consistent with regulatory guidelines.

Age becomes a significant factor during this testing process because the Equivalent Benefit Accrual Rate (EBAR) reflects projected retirement values.

Younger participants produce higher EBAR values due to the extended compounding window between the contribution year and retirement age.

This dynamic plays an important role when family members join the company workforce.

Pairing New Comparability with Safe Harbor Contributions

New Comparability allocations must satisfy a minimum gateway contribution requirement during testing.

The gateway ensures that non-highly compensated employees receive a minimum level of employer contribution relative to the benefits allocated to highly compensated employees.

A 3% Safe Harbor nonelective contribution often works well alongside a New Comparability design because it counts toward satisfying the gateway requirement.

Safe Harbor match contributions follow different rules and do not count toward meeting the gateway threshold.

For many plans, pairing a New Comparability allocation with a 3% Safe Harbor nonelective contribution supports both compliance and allocation flexibility.

This allows the plan to structure profit sharing contributions more strategically while meeting the gateway requirement.

Strategic Exclusions and Allocation Control

Plan design can also incorporate strategic decisions about which participants receive specific contributions.

Highly compensated employees, or defined groups of highly compensated employees, may be excluded from the Safe Harbor contribution. This design choice provides additional flexibility when structuring profit sharing allocations.

When highly compensated employees do not receive the Safe Harbor contribution, the minimum required allocation used to pass nondiscrimination testing may be lower. Profit sharing contributions can then be allocated to those employees through discretionary plan design.

This structure provides the plan sponsor with meaningful control over the allocation process.

That flexibility becomes particularly useful in businesses where family members participate in the workforce or where employee groups vary widely in age.

Understanding the Gateway and Nondiscrimination Tests

Once profit sharing allocations are determined, the plan must pass nondiscrimination testing under Section 401(a)(4).

The process typically involves two major steps.

Gateway Testing

The first step verifies that non-highly compensated employees receive the minimum required allocation.

The gateway requirement determines whether non-highly compensated employees receive the lesser of:

• 5% of full-year compensation
• One-third of the highest percentage allocated to highly compensated employees

Meeting this requirement allows the plan to proceed to the next stage of testing.

Equivalent Benefit Accrual Rate Testing

The second stage projects the value of each participant’s contribution to retirement age.

These projected values are used to calculate the Equivalent Benefit Accrual Rate (EBAR) for each participant.

The EBARs are then used to perform nondiscrimination testing through methods such as:

• The Ratio Percentage Test
• The Average Benefits Test

Because the calculation projects contributions forward to retirement age, younger participants can have higher EBAR values even when the current contribution amount is identical.

This factor explains why age distribution within the workforce influences plan design decisions.

Planning Ahead When Family Members Work in the Business

Family businesses often employ children as they begin working during high school or college. This approach provides valuable work experience and allows younger family members to begin saving for the future.

When a retirement plan is in place, the age of these new participants becomes part of the overall plan design conversation.

Contribution strategies that remain discretionary provide the plan sponsor with flexibility each year. That flexibility allows contributions to align with testing requirements while supporting the financial goals of the business owner.

With careful planning, retirement plans can continue to support owner contributions, employee benefits, and family participation in the business.

Retirement Plan Design That Supports Business Goals

Profit sharing allocations, Safe Harbor contributions, and nondiscrimination testing all interact within the framework of retirement plan design.

Understanding how age, workforce structure, and contribution strategies influence testing outcomes allows plan sponsors to make informed decisions.

When retirement plan consultants evaluate these variables together, they can structure plans that maintain flexibility, support meaningful retirement savings, and remain aligned with regulatory requirements.

For business owners, the result is a retirement strategy that evolves alongside the business and continues to support long-term financial goals.