The deadline for a business to establish a new safe harbor 401(k) plan for 2026 is October 1, 2026.
A few important caveats:
- The plan generally must be established by October 1 to qualify as a safe-harbor plan for the full 2026 year.
- Employees generally must receive the required safe-harbor notice at least 30 days before the beginning of the plan year (so for a calendar-year plan, normally by December 1 for 2027).
- There are special rules for new businesses, automatic enrollment, and certain mid-year changes.
A Safe Harbor 401(k) is a type of 401(k) retirement plan in which the employer agrees to make mandatory contributions to employees’ retirement accounts. In exchange, the plan is generally exempt from certain annual IRS nondiscrimination tests that apply to traditional 401(k) plans.
How it works
In a regular 401(k), employees choose how much of their salary to contribute, and the employer may or may not match those contributions.
In a Safe Harbor 401(k):
- Employees can still make their own pre-tax and/or Roth 401(k) contributions (subject to IRS annual limits).
- The employer is required to make contributions using one of the IRS-approved Safe Harbor formulas.
- Those employer contributions are typically 100% vested immediately, meaning employees own them right away.
Common employer contribution options
The employer generally chooses one of these approaches:
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Basic matching contribution
- 100% match on the first 3% of pay an employee contributes.
- 50% match on the next 2% of pay.
- Maximum employer match: 4% of compensation.
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Enhanced matching contribution
- A match that’s at least as generous as the basic formula.
- Example: 100% match on the first 4% contributed.
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Nonelective contribution
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The employer contributes at least 3% of compensation for all eligible
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employees, even if they don’t contribute anything themselves.
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Advantages For employees:
- Immediate ownership of employer contributions (in most Safe Harbor plans).
- Easier for highly compensated employees to maximize their 401(k) contributions because the plan generally avoids annual nondiscrimination testing.
- Predictable employer contributions.
For employers:
- Avoids the annual ADP/ACP nondiscrimination tests that can require refunds of contributions to highly compensated employees.
- Makes it easier to offer a competitive retirement benefit.
In short, a Safe Harbor 401(k) is designed to encourage retirement savings by requiring employer contributions while simplifying compliance with IRS testing rules. It’s particularly attractive for small and mid-sized businesses with owners or highly compensated employees who want to maximize their own retirement contributions.
WAA can put you in connect with a reputable financial advisor that can assist your company in establishing a Safe Harbor 401(k) for your business. Once set up, WAA’s tax team can work with the financial advisor to ensure both the financial (growth) and tax savings side of having such a plan is implemented to maximize both the company’s and the company’s employees’ benefits.
Contact our office at 412-794-8224 to start the process. October 1st is less than one month away!
