Before we dive into the Qualified Automatic Contribution Arrangement (QACA), let’s provide some context. For decades, the biggest challenge in workplace retirement plans has been getting people to sign up. Employees receive enrollment packets, set them aside, and often never get around to making an election. The result is millions of workers leaving free employer money on the table and failing to save for their own futures. Behavioral economists identified this problem years ago: when enrollment is opt-in, participation suffers. When it becomes opt-out, participation soars.
Congress took notice. Beginning with the Pension Protection Act of 2006, lawmakers created incentives for employers to adopt automatic enrollment features. The most recent legislation, the SECURE 2.0 Act, goes further by requiring most new 401(k) and 403(b) plans to include automatic enrollment starting in 2025.
One specific plan design that has gained prominence through this legislative evolution is the QACA. This combines mandatory automatic enrollment features with safe harbor protections, creating a powerful tool for employers who want to boost participation while simplifying their compliance obligations.
What is a Qualified Automatic Contribution Arrangement?
A Qualified Automatic Contribution Arrangement is a specific type of automatic enrollment design for 401(k) plans that meets requirements set forth in Internal Revenue Code Section 401(k)(13). Plans that satisfy these requirements receive a significant compliance benefit: they are exempt from the annual actual deferral percentage (ADP) and actual contribution percentage (ACP) nondiscrimination tests. This is the primary attraction for employers. Instead of spending time and money each year proving their plan doesn’t unfairly favor highly compensated employees, they can operate under a safe harbor.
The QACA structure originated with the Pension Protection Act of 2006. Congress designed it to encourage employers to adopt automatic enrollment by offering a clear, IRS-approved framework. The employer gets predictable, simplified compliance, and employees get defaulted into saving for retirement. It was a straightforward trade-off.
The Core Components of a QACA
A QACA is not simply a plan with automatic enrollment. It has three essential elements that must all be present. Understanding each one is critical for any employer considering this path.
Automatic Enrollment and Escalation Schedule
Under a QACA, eligible employees are automatically enrolled in the plan at a specified default deferral rate. They always retain the right to opt out entirely or change their contribution rate. The default percentages must follow a minimum schedule based on the employee’s years of participation.
- First year of participation: at least 3% but not more than 10% of compensation
- Second year: increase by at least 1% (to at least 4%)
- Third year: increase by at least another 1% (to at least 5%)
- Fourth year and beyond: increase to at least 6%, up to a maximum of 15%
These automatic increases must continue until the deferral rate reaches at least 6%, but can go as high as 15%. Note: Plans subject to SECURE 2.0’s automatic enrollment mandate must escalate to at least 10%. This ensures employees gradually build their savings rate over time without needing to take action.
Required Employer Contributions
A QACA imposes obligations on the employer. To qualify for the safe harbor protections, the employer must make contributions that meet one of two minimum thresholds.
The first option is a matching contribution formula. Under this approach, the employer provides a match equal to 100% of the first 1% of compensation deferred, plus 50% of the next 5% of compensation deferred. This yields a total match of 3.5% for an employee who defers at least 6% of pay.
The second option is a non-elective contribution. The employer contributes at least 3% of compensation to all eligible employees, regardless of whether those employees make any deferrals of their own. This ensures even non-participants receive something.
These employer contributions can be subject to a two-year cliff vesting schedule. Employees become 100% vested in these contributions after completing two years of service. This is more flexible than other safe harbor plan designs, which typically require immediate vesting.
Notice Requirements
Employees must receive an annual written notice explaining their rights under the QACA. The notice must be provided within a reasonable period before each plan year, generally 30 to 90 days in advance. It must include several specific pieces of information:
- The default deferral percentage that will apply and how it will increase over time
- The employee’s right to elect a different percentage or opt out entirely
- How default contributions will be invested if the employee makes no election
- The availability of any permissible withdrawals and the procedures for making them
This notice requirement is not optional. Failure to provide timely, adequate notice can jeopardize the plan’s safe harbor status.
QACA vs. Other Automatic Enrollment Arrangements
Employers evaluating their automatic enrollment options often encounter two similar-sounding terms: QACA and EACA. They are not the same, and the differences matter.
| Feature | Qualified Automatic Contribution Arrangement (QACA) | Eligible Automatic Contribution Arrangement (EACA) |
|---|---|---|
| Primary Benefit | Safe harbor from ADP/ACP nondiscrimination testing | Allows 90-day withdrawal of automatic contributions |
| Required Employer Contribution | Yes (3% non-elective or 3.5% match) | No |
| Vesting Schedule | Can be 2-year cliff | 100% immediate vesting for employee contributions |
| Default Escalation Required | Yes (schedule to at least 6%) | No |
| Permissible Withdrawals | Generally not allowed | Yes, within 90 days |
The table clarifies the trade-off. A QACA requires the employer to put money in, but eliminates testing headaches. An EACA gives employees a 90-day window to withdraw their automatic contributions if they opt out quickly, but does not provide safe harbor protection from nondiscrimination testing. An employer could still satisfy ADP/ACP testing through other means, but the automatic safe harbor is not one of them.
Some plans are designed to meet the requirements for both a QACA and an EACA simultaneously. This hybrid approach provides the safe harbor protections of a QACA while also giving employees the 90-day refund option characteristic of an EACA.
Which Retirement Plans Can Use a QACA?
A QACA is available only to 401(k) plans. It does not apply to SIMPLE IRA plans, SEP IRAs, traditional IRAs, or Solo 401ks. The statutory framework in Internal Revenue Code Section 401(k) governs these arrangements, and that code section applies to qualified plans, not IRA-based plans.
For Solo 401k owners, the question is straightforward. Does adopting a QACA make sense? The answer depends entirely on whether you have employees.
A Solo 401k by definition covers only the business owner and possibly a spouse, with no common-law employees. In this scenario, nondiscrimination testing is not a concern because there are no non-highly compensated employees to test against. The ADP and ACP tests simply do not apply. Adopting a QACA would add administrative complexity, require employer contributions that benefit only yourself, and provide no meaningful benefit in return. It is generally not advisable.
However, if a business owner plans to hire employees in the future and convert their Solo 401k into a standard 401k plan, understanding QACA becomes relevant. New 401k plans established after December 29, 2022 must generally include automatic enrollment features. A QACA is one way to satisfy that requirement. Knowing how these rules work positions you to make informed decisions when the time comes to grow your business and expand your retirement plan offerings.
The SECURE 2.0 Connection and Grandfathered Plans
The passage of the SECURE 2.0 Act in late 2022 introduced a significant shift in the retirement plan landscape. For plan years beginning after December 31, 2024, any 401(k) or 403(b) plan established on or after December 29, 2022 must include an automatic enrollment feature. This mandate applies broadly, though it carves out specific exceptions we will cover shortly.
The law does not require a QACA specifically. An EACA can also satisfy the mandate (see the comparison table earlier for key differences).
Grandfathered Plans and Transition Rules
Plans established before December 29, 2022 are grandfathered. They are not required to add automatic enrollment unless they choose to do so voluntarily. This grandfather status generally continues even if the plan later merges into a multiple employer plan (MEP) or pooled employer plan (PEP) established after that date. So an existing plan that merges into a new MEP does not suddenly become subject to the automatic enrollment mandate.
Exceptions for Small and New Businesses
The automatic enrollment requirements do not apply to every business. Several important exceptions exist.
- Employers that normally have 10 or fewer employees are exempt from the mandate. The determination of employee count is based on the number of common law employees the employer had during at least 50% of its business days for the taxable year.
- New businesses are exempt during their first three years of existence. If an employer has been in business less than three years, the automatic enrollment provisions do not apply until the first day of the plan year on or after the third anniversary of the date the employer came into existence.
- Governmental and church plans are also exempt from these requirements.
These exceptions recognize that smaller and younger employers face different administrative burdens than established businesses with larger workforces.
Advantages and Disadvantages of a Qualified Automatic Contribution Arrangement
A Qualified Automatic Contribution Arrangement offers meaningful benefits, but it also comes with trade-offs. Employers should weigh both sides carefully before committing to this design.
Advantages
The primary attraction for most employers is elimination of annual ADP/ACP nondiscrimination testing, saving significant time, administrative expense, and the potential headache of failed tests.
The automatic enrollment feature itself drives higher participation rates. Behavioral economics shows that default enrollment works. Employees who might otherwise delay or neglect signing up become retirement savers automatically. Over time, the automatic escalation feature gradually increases their savings rates without requiring active decisions.
Employer contributions under a QACA are tax-deductible, as with any qualified plan contribution. The two-year cliff vesting schedule offers more flexibility than traditional safe harbor plans, which require immediate vesting. This allows employers to retain contributions for short-term employees who leave before the two-year mark.
The entire framework is IRS-approved and well-defined. Using a Qualified Automatic Contribution Arrangement provides a clear compliance path that reduces fiduciary risk when structured correctly.
Disadvantages
The most obvious downside is mandatory employer contributions. Unlike discretionary profit-sharing plans, a QACA requires the employer to commit to either the matching formula or the 3% non-elective contribution year after year. This is a real cost that must be budgeted.
Administrative complexity increases compared to plans without automatic features. The employer must manage default enrollment rates, escalation schedules, vesting calculations, and annual notice requirements. Payroll systems must be configured correctly to handle automatic enrollment and opt-out elections.
The annual notice requirement creates ongoing administrative tasks. Notices must be timely and accurate. Missing this deadline can jeopardize safe harbor status.
Some employees may perceive default enrollment as presumptuous or may not fully understand their right to opt out. While participation increases overall, a small number of employees may feel pushed into saving when they have competing financial priorities.
Steps to Adopt a Qualified Automatic Contribution Arrangement
For employers who decide a QACA fits their goals, the implementation process involves several concrete steps.
- Amend the Plan Document
The plan must be formally amended to include QACA provisions before the plan year begins. Mid-year adoption is not permitted. Work with your plan document provider or third-party administrator to ensure the amendment is properly drafted and executed.
- Set Default Rates
Determine the initial default deferral percentage. It must be at least 3% but cannot exceed 10% of compensation. Confirm that your automatic escalation schedule meets the minimum requirements: at least a 1% increase each year until the deferral rate reaches at least 6%. For non-grandfathered plans subject to SECURE 2.0, the escalation must continue until the rate reaches at least 10%.
- Choose Employer Contribution Structure
Decide whether to use the matching formula or the 3% non-elective contribution. Decide whether to use the matching formula or the 3% non-elective contribution (as detailed in the Required Employer Contributions section above).
- Prepare Annual Notices
Draft compliant notices that explain the automatic features, opt-out rights, default investments, and the availability of any permissible withdrawals. Ensure notices meet the timing requirements detailed in the Notice Requirements section above.
- Coordinate Payroll Systems
Ensure your payroll system can handle automatic enrollment, escalation, and opt-out elections. Test the setup with sample data before the plan year begins to catch any issues early.
- Select Default Investment
Choose a Qualified Default Investment Alternative (QDIA) that meets Department of Labor requirements. Common QDIA options include target-date funds, balanced funds, and professionally managed accounts. Participants who make no investment election will have their contributions directed to this default option.
Common QACA Mistakes to Avoid
Even well-intentioned employers can stumble on the details. Awareness of common pitfalls helps maintain compliance.
- Failing to Provide Timely Notices
The annual notice requirement is not optional. Notices must be given within the prescribed window, generally 30 to 90 days before each plan year. Late or missing notices can disqualify the safe harbor protection for that year.
- Applying Incorrect Default Percentages
The escalation schedule must follow the minimums precisely. The initial rate must be at least 3%, and annual increases of 1% must continue until reaching at least 6%. For plans subject to SECURE 2.0, escalation continues to at least 10%. Getting these percentages wrong can break QACA compliance.
- Overlooking the $50,000 Participant Loan Limit
A QACA’s safe harbor status does not affect participant loan rules. The same loan limits apply: the lesser of $50,000 or 50% of the vested account balance. Employers sometimes assume automatic enrollment changes loan rules, but it does not.
- Miscalculating Employer Contributions
Ensure you’re applying the correct matching formula (100% on first 1%, 50% on next 5%). Overstating the match creates compliance issues and unexpected costs.
Is a Qualified Automatic Contribution Arrangement Right for Your Plan?
A Qualified Automatic Contribution Arrangement represents a thoughtful compromise in retirement plan design. For employers with employees, it offers a powerful combination of automatic enrollment, safe harbor protection from testing, and more flexible vesting than traditional safe harbor plans. The trade-off is a firm commitment to making employer contributions and managing the administrative requirements that come with the territory.
The decision to adopt a QACA should be driven by your specific circumstances. Do you have employees whose participation you want to increase? Would eliminating nondiscrimination testing simplify your life? Are you comfortable with the mandatory contribution obligation? Answering these questions honestly will guide you toward the right choice.
FAQ
What is the difference between a QACA and a safe harbor 401k?
A QACA is actually a type of safe harbor 401k. The difference lies in how it achieves safe harbor status. Traditional safe harbor plans require either a 3% non-elective contribution or a match of 100% on the first 3% plus 50% on the next 2% (4% effective match for those contributing 5%+), with immediate vesting. A Qualified Automatic Contribution Arrangement uses automatic enrollment and can have lower required contributions (3.5% effective match or 3% non-elective) with two-year cliff vesting.
Can I have a Qualified Automatic Contribution Arrangement in my Solo 401k if I have no employees?
You can technically include QACA provisions in your plan document, but there is no practical benefit. The safe harbor protections are irrelevant when you are the only participant. It adds administrative work without improving your retirement savings outcome.
What happens if an employee opts out of a QACA?
Employees who opt out are not required to receive the employer matching or non-elective contributions, unless the employer chooses to provide them anyway. The QACA rules only require employer contributions for non-highly compensated employees who are participating in the arrangement.
Are QACA employer contributions subject to the same withdrawal restrictions as elective deferrals?
Yes, with some differences. QACA employer contributions generally cannot be distributed due to financial hardship. They are also subject to the two-year vesting schedule and cannot be withdrawn before separation from service, except in cases of plan termination or certain other limited circumstances.
Do all new 401k plans have to be QACAs after SECURE 2.0?
No. New 401k plans established after December 29, 2022 must have automatic enrollment, but they can use an Eligible Automatic Contribution Arrangement (EACA) instead of a Qualified Automatic Contribution Arrangement. The key difference is that an EACA does not require employer contributions and does not provide safe harbor protection from nondiscrimination testing.
Can a Solo 401k qualify for the automatic enrollment tax credit?
Yes, this is an important development. Solo 401k owners can qualify for a tax credit of up to $500 per year for three years (total $1,500) by adopting an Eligible Automatic Contribution Arrangement (EACA). This credit is separate from the startup costs credit and applies even if you are the only participant. You must provide the required annual notice and claim the credit on IRS Form 8881. This is a legitimate way for solo business owners to benefit from automatic enrollment provisions.
