Safe harbor 401(k) plans are the most popular type of 401(k) sponsored by small businesses today. They can help business owners maximize their annual contributions by automatically passing the ADP/ACP and top-heavy nondiscrimination tests - which small business 401(k) plans often fail. However, to achieve safe harbor status, a plan must meet certain employer contribution and participant disclosure requirements. For many business owners, that trade-off is well worth the cost.
We get a lot of questions from business owners about safe harbor 401(k) plans. Below is a FAQ with answers to the most common questions we receive. These answers reflect changes made by the Setting Every Community Up for Retirement Enhancement (SECURE) Act. If you are a small business owner, you can use our FAQ to help decide whether a safe harbor 401(k) plan is right for your company.
What Are My Safe Harbor Contribution Options?
You must make a qualifying safe harbor match or nonelective contribution to plan participants to satisfy safe harbor requirements. For 401(k) plans that do not meet Qualified Automatic Contribution Arrangement (QACA) requirements - which are described in the next question - your options include:
- Matching Contribution - You har formula options include:
Basic match - 100% match on the first 3% of deferred compensation plus a 50% match on deferrals between 3% and 5% (4% total).
Enhanced match – Must be at least as generous as the basic match at each tier of the match formula. A common formula is a 100% match on the first 4% of deferred compensation.
Nonelective Contribution - 3% (or more) of compensation, regardless of elective deferrals.
Highly-Compensated Employees (HCEs) can be excluded from these contributions. They must be 100% vested when made.
What’s a Qualified Automatic Contribution Arrangement (QACA)?
- Make one of the following contributions to plan participants:
- QACA Match – 100% match on the first 1% of compensation deferred and a 50% match on deferrals between 1% and 6% (3.5% total). A more generous match formula is also allowed.
- QACA Nonelective – 3% (or more) of compensation, regardless of employee deferrals.
- Subject QACA contributions to no more than a 2-year cliff vesting schedule.
- Set a default deferral rate for the automatic enrollment feature based on the following limits:
- Minimum - 3% for the first year of plan participation, increased by 1% annually until 6% is reached.
- Maximum - 10% for the first year of plan participation. For subsequent years, the SECURE Act raised the cap to 15%.
Are Profit-Sharing Contributions Made to a Safe Harbor 401(k) Plan Subject to Testing?
Yes. Regardless of a 401(k) plan’s safe harbor status, a profit-sharing contribution must satisfy the 401(a)(4) nondiscrimination test. While a pro-rata or permitted disparity formula will generally pass this test automatically, a “new comparability” formula must pass the 401(a)(4) “general test.”
Can an Additional Discretionary Match Also Exempt from the ACP Test?
It depends. If you make a discretionary match in addition to safe harbor contributions, it must meet two conditions to be exempt from the ACP test:
- The match formula cannot be based on more than 6% of deferred compensation.
- The match cannot exceed 4% of deferred compensation in total.
For example, a discretionary 50% match on the first 6% of deferred compensation (3% total) would be exempt from the ACP test, while 25% match on the first 10% of deferred compensation (2.5% total) would not.
A discretionary match can be subject to a vesting schedule – up to a 3-year cliff or 6-year graded schedule.
Are Safe Harbor 401(k) Plans ALWAYS Exempt from Top Heavy Testing?
No. A safe harbor 401(k) plan would be subject to top-heavy testing for plan years in which one or more of the following events occur:
- Safe harbor contributions are subject to longer eligibility requirements than employee deferrals.
- A profit-sharing contribution (including forfeiture reallocations) is made during the year.
- A match that’s not exempt from the ACP test is made during the year.
- Voluntary (non-Roth) after-tax contributions are made during the year.
However, all employer contributions made during the plan year will count towards satisfying the 3% top-heavy minimum contribution (if applicable).
What are the Participant Disclosure Requirements for a Safe Harbor 401(k) Plan?
For plan years beginning after December 31, 2019, only match-based safe harbor 401(k) plans are subject to a participant disclosure requirement. The SECURE Act made nonelective-based safe harbor plans exempt.
If applicable, a safe harbor notice must be distributed to plan participants within a reasonable period before the start of each plan year. In general, “reasonable” means:
30-90 days before the start of each plan year.
For new participants, generally no earlier than 90 days before their plan entry date and no later than that date.
What’s the Deadline for Establishing a New Safe Harbor 401(k) Plan?
In general, the first year of a new safe harbor 401(k) plan must be at least 3 months long – to give all plan participants the opportunity to make wage deferrals. That means the deadline for establishing a new calendar-based plan is October 1.
What’s the Deadline for Amending a Traditional 401(k) Into a Safe Harbor Plan?
A formal plan amendment is necessary to convert a traditional 401(k) into a safe harbor plan. The deadline for executing this amendment will depend upon the type of safe harbor contribution to be made.
Safe Harbor Match – amendment deadline is the last day of year preceding the plan year in which the plan will be safe harbor.
However, the safe harbor notice must be distributed sooner - 30-90 days before the start of the plan year.
Safe Harbor Nonelective – The SECURE Act made this amendment deadline much more flexible. It’s based on the nonelective contribution formula:
Less than 4% - up to 30 days before the close of the plan year in which the plan will be safe harbor.
4% or greater - The last day of the plan year following the plan year in which the plan will be safe harbor (i.e., the deadline for distributing ADP/ACP corrective refunds).
Is it Possible to Reduce or Suspend Safe Harbor Contributions Mid-Year?
Yes. You can reduce or suspend either safe harbor match or nonelective contributions (as applicable) mid-year when all of the following conditions are met:
Either of the following conditions apply:
Your company is operating at an economic loss.
The safe harbor notice provided before the start of the plan year states you may reduce or suspend contributions mid-year.
A supplemental notice is distributed to eligible employees at least 30 days before the effective date of the reduction or suspension.
Eligible employees have a reasonable opportunity to change their deferral election before the reduction or suspension occurs.
The 401(k) plan is ADP/ACP tested for the full plan year in which the reduction or suspension occurs using the current year testing method.
Can a Safe Harbor 401(k) Plan be Amended Mid-Year?
It depends. You can amend a safe harbor 401(k) plan mid-year when all of the following conditions are met:
If the amendment will affect the content of the safe harbor notice provided before the start of the plan year, you must:
Distribute a new notice to eligible employees 30-90 days before the effective date of the amendment.
Give eligible employees a reasonable opportunity to change their deferral election before the amendment’s effective date. A 30-day election period is deemed reasonable.
The amendment cannot be a prohibited mid-year change listed in Notice 2016-16.
What Tax Credits Apply to a Safe Harbor 401(k) Plan?
Small businesses (up to 100 employees) can earn a tax credit to cover 50% of the ordinary and necessary costs of starting a new retirement plan – including a safe harbor 401(k) plan. The SECURE Act increased its annual cap from $500 to the greater of:
the lesser of
$250 multiplied by the number of non-highly compensated employees eligible for plan participation or
This tax credit is available for up to three years.
Small businesses can earn an additional $500 tax credit by adding an automatic enrollment feature to either a new or existing 401(k) plan. The credit is available for each of the first three years the feature is effective.
Small Business Owners – Know Your Options!
Safe harbor 401(k) plans can be a great choice for small businesses that have trouble passing 401(k) testing. However, they are not for everybody – they can be more expensive than traditional 401(k) plans. You should weigh their pros and cons vs. a traditional plan before choosing one for your company.