One of the most common questions business owners ask when evaluating a Professional Employer Organization (PEO) is: “Do we have to use the PEO’s 401(k) plan, or can we keep our own?”
The answer: In most cases, yes—you can keep your existing 401(k), but there are pros and cons to consider.
✅ How PEO 401(k) Plans Work
Most PEOs offer a “multiple employer plan” (MEP) or pooled employer plan (PEP). This structure allows all client companies to participate in a single large 401(k) plan. The PEO handles administration, compliance, and fiduciary responsibility, while employees benefit from lower fees and better investment options.
Because of this design, many PEOs encourage (or even require) clients to join their plan to simplify administration.
✅ Can You Keep Your Own 401(k)?
- Yes, it’s possible. Many PEOs allow clients to opt out of their retirement plan and keep an existing 401(k).
- But it depends on the PEO. Some PEOs make their plan mandatory to streamline compliance, while others offer flexibility.
- Dual Plan Management: If you keep your own plan, you’ll need to maintain your own administration, compliance filings (Form 5500), and fiduciary responsibility. The PEO won’t take that liability off your plate.
✅ Pros of Keeping Your Own 401(k)
- Continuity: No disruption for employees already enrolled in your current plan.
- Customization: Full control over plan design, matching contributions, and vesting schedules.
- Independence: You’re not tied to the PEO’s pooled structure if you ever decide to leave.
✅ Cons of Keeping Your Own 401(k)
- Higher Costs: Without the PEO’s pooled buying power, fees may be higher.
- Administrative Burden: You’ll continue to handle testing, compliance, and fiduciary liability.
- Missed Savings Opportunities: Your employees may not benefit from lower-cost investment options available through the PEO’s plan.
✅ Best Practices for Deciding
- Ask the PEO directly: Is their 401(k) mandatory or optional?
- Compare fees: Request side-by-side cost comparisons between your current plan and the PEO’s pooled plan.
- Consider fiduciary risk: Do you want to keep responsibility, or offload it to the PEO?
- Think about exit strategy: If you plan to leave the PEO in a few years, having your own 401(k) may ease the transition.
🔑 Key Takeaway
Yes, clients can often keep their own 401(k) instead of using the PEO’s—but it comes with trade-offs. The PEO’s plan usually offers lower fees, reduced liability, and simpler compliance, while your own plan offers customization and independence.
The best choice depends on your company’s priorities: cost savings and liability reduction vs. control and flexibility.