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A safe harbor 401(k) plan is designed to make nondiscrimination testing simpler. In exchange for making required employer contributions that are immediately vested, the plan automatically satisfies certain annual ADP and ACP testing requirements. That can make it easier for owners and highly compensated employees to contribute up to the annual limit.
Standard 401(k) plans generally have to pass nondiscrimination tests that compare how much highly compensated employees defer and receive in matching contributions with everyone else. If a plan fails, it may have to refund contributions to highly compensated employees or make corrective contributions. A safe harbor 401(k) avoids certain testing requirements by requiring the employer to make a qualifying contribution.
Employers can generally satisfy the safe harbor rules through a basic matching contribution, an enhanced match that is at least as generous at each contribution level, or a nonelective contribution made to eligible employees whether or not they contribute to the plan themselves. Safe harbor contributions must be immediately 100 percent vested.
The tradeoff is that the employer commits to funding the required contribution. Mid-year changes or suspensions are allowed only in certain situations and may require advance notice. In return, highly compensated employees can generally contribute up to the annual IRS limit without the same risk of refunds caused by failed ADP or ACP testing. Employers also avoid much of the corrective work outlined in the IRS guidance for failed ADP and ACP tests. Certain safe harbor plans may also satisfy top-heavy minimum contribution requirements automatically.
Timing matters, too. Safe harbor matching provisions generally need to be established before the plan year begins. Nonelective safe harbor provisions may be added later, depending on when they are adopted and the contribution level provided. Participant notice requirements may also apply depending on the safe harbor design.
Employers can generally use a basic matching contribution, an enhanced matching formula that is at least as generous at each contribution level, or a nonelective contribution made to eligible employees whether or not they contribute to the plan. Safe harbor contributions must be immediately and fully vested.
Mostly flexibility. The employer commits to funding the required contribution, even when business conditions change, and mid-year changes are limited. In exchange, the plan can avoid certain annual nondiscrimination testing and reduce the risk that highly compensated employees will have contributions refunded.
Safe harbor matching provisions generally need to be in place before the plan year begins. Nonelective provisions may be adopted later, depending on timing and the contribution amount. Notice requirements can also vary by plan design.