Auto-enrollment has become one of the most effective tools for increasing retirement plan participation, but implementing it successfully requires thoughtful plan design, compliance planning, and employee communication.

For years, many employers relied on employees to actively enroll in their retirement plans. The problem is that even employees who intend to save often delay enrollment due to confusion, competing priorities, or simple inertia.

Auto-enrollment helps solve that challenge by automatically enrolling eligible employees into the retirement plan unless they choose to opt out.

At Basic Capital, we believe retirement plans should make saving easier rather than requiring employees to navigate unnecessary complexity. Understanding how auto-enrollment works can help employers improve participation while staying compliant with evolving retirement plan requirements.

Why Auto-Enrollment Matters More Than Ever

The passage of SECURE 2.0 significantly increased attention around automatic enrollment.

For many newly established 401(k) and 403(b) plans, SECURE 2.0 introduced automatic enrollment requirements designed to increase retirement plan participation and improve long-term retirement readiness.

The rationale is simple: employees are far more likely to save when participation is the default option.

Employers implementing auto-enrollment often see improvements in:

• Participation rates

• Retirement readiness

• Employee engagement

• Plan health

• Long-term savings outcomes

For growing businesses, auto-enrollment has increasingly become a core component of modern retirement plan design.

How Auto-Enrollment Works

Under an auto-enrollment structure, eligible employees are automatically enrolled in the retirement plan at a predetermined contribution rate.

Employees retain full control and may:

• Opt out entirely

• Change contribution percentages

• Select different investments

• Adjust savings rates over time

Auto-enrollment simply changes the default starting point from "not participating" to "participating."

For many employees, that small change can significantly improve long-term retirement savings.

Choosing a Default Contribution Rate

One of the most important decisions employers make when implementing auto-enrollment is selecting the default contribution percentage.

Historically, many plans used:

• 3%

• 4%

• 5%

default contribution rates.

However, many retirement experts now view higher default rates as more effective because employees often remain at the default contribution level for extended periods.

When selecting a default rate, employers should balance:

• Employee participation goals

• Retirement readiness objectives

• Workforce demographics

• Employee affordability concerns

At Basic Capital, we often see employers view default contribution rates as a long-term plan design decision rather than simply an enrollment setting.

Understanding Qualified Default Investment Alternatives (QDIAs)

When employees are automatically enrolled, employers must also determine how contributions will be invested if participants do not make an active investment election.

This is where Qualified Default Investment Alternatives (QDIAs) come into play.

Common QDIA options include:

• Target-date funds

• Balanced funds

• Managed accounts

QDIAs are designed to provide a prudent default investment option while helping employers meet fiduciary obligations related to automatic enrollment.

Target-date funds remain one of the most common QDIA selections because they automatically adjust investment allocations as participants approach retirement.

Employers should periodically review QDIA selections as part of their broader fiduciary oversight process.

EACA vs. QACA: What's the Difference?

One area that often creates confusion is the distinction between EACA and QACA structures.

Eligible Automatic Contribution Arrangement (EACA)

An EACA allows employers to:

• Automatically enroll employees

• Provide participants with a longer correction period for contribution elections

• Potentially simplify certain administrative processes

EACAs are often used when employers want the benefits of auto-enrollment without implementing additional safe harbor requirements.

Qualified Automatic Contribution Arrangement (QACA)

A QACA combines automatic enrollment with specific safe harbor plan requirements.

QACA plans generally:

• Require minimum automatic contribution rates

• Include automatic escalation features

• Require employer contributions

• Receive certain nondiscrimination testing advantages

For some employers, QACA structures can help simplify compliance while supporting stronger participation rates.

The right choice often depends on the company's broader retirement plan objectives.

Notice Requirements Plan Sponsors Need to Understand

Auto-enrollment plans also come with communication obligations.

Employees generally must receive notices explaining:

• Automatic enrollment provisions

• Default contribution rates

• Investment elections

• Opt-out procedures

• Contribution change options

Clear communication is critical because employees should understand:

• What is happening

• Why it is happening

• What choices remain available to them

At Basic Capital, we believe transparency and employee education are essential components of successful retirement plan participation.

Benefits Beyond Participation

While increased enrollment is often the primary goal, auto-enrollment can create additional benefits for employers.

These may include:

• Improved retirement readiness

• Stronger employee financial wellness

• Better plan participation metrics

• Reduced compliance challenges

• More balanced participation across employee groups

For growing businesses, stronger retirement readiness can also have broader workforce implications.

Companies interested in the connection between retirement readiness and organizational outcomes may also benefit from reading our The Business Impact of Retirement Readiness guide.

What Plan Sponsors Should Evaluate Before Implementing Auto-Enrollment

Before turning on auto-enrollment, employers should evaluate:

Workforce Demographics

Contribution rates that work well for one workforce may not fit another.

Employers should consider:

• Employee income levels

• Workforce age distribution

• Participation history

• Benefits utilization trends

Payroll and Administrative Processes

Auto-enrollment requires coordination across:

• Payroll systems

• Recordkeeping platforms

• Employee onboarding workflows

• Participant communications

Fiduciary Oversight

Plan sponsors should document decisions related to:

• Default contribution rates

• QDIA selection

• Employee notices

• Escalation schedules

Strong documentation helps support prudent fiduciary governance.

Why Modern Retirement Infrastructure Matters

Auto-enrollment is most effective when paired with retirement technology that simplifies administration and improves participant experiences.

Modern retirement platforms can help employers:

• Automate enrollment workflows

• Manage participant communications

• Track participation trends

• Simplify compliance oversight

• Improve retirement readiness visibility

At Basic Capital, we believe retirement plans should help employers reduce administrative complexity while making it easier for employees to save for the future.

Companies evaluating retirement plan modernization can also explore our For Employers resources to learn how modern retirement technology supports participation, compliance, and employee engagement.

Looking Ahead

Auto-enrollment is quickly becoming a foundational feature of modern retirement plans.

As SECURE 2.0 continues reshaping retirement plan expectations, employers that proactively evaluate automatic enrollment strategies may be better positioned to improve participation, support employee financial wellness, and strengthen long-term retirement outcomes.

At Basic Capital, we believe modern retirement plans should balance:

• Simplicity

• Participation

• Compliance

• Transparency

• Long-term retirement readiness

Ready to see how a modern retirement platform can simplify enrollment and retirement plan administration? Get started with Basic Capital to learn how our platform helps employers improve participation, streamline compliance, and support stronger retirement outcomes.