05/05/2026
Think a Solo 401(k) is simple because it's just you? That assumption can lead to compliance issues that many business owners don't anticipate.
Here's what often gets overlooked: the second you hire an employee, your "solo" plan becomes a full 401(k) with all the compliance requirements attached. No exceptions. And if your plan assets cross $250,000, you're required to file Form 5500, even if you never hired anyone.
Melissa and Kasey see it regularly: Solo 401(k)s that haven't filed Form 5500 in years, S-corp owners calculating contributions based on the wrong income, and two-page plan documents that were filled out incorrectly from day one. These aren't just technicalities: they're compliance issues that can trigger IRS penalties and corrective contributions.
This week on The Sentinel Show, Melissa and Kasey discuss when Solo 401(k)s may be appropriate, common setup errors they encounter, and why ongoing administration matters even for owner-only plans. 🎧 Listen now: https://open.spotify.com/episode/69fL6WFgoVUvNBdLqTvgP9?si=vVwc6Uw6T_uz4BYeGOIuDg
This content is for educational purposes only and does not constitute legal, tax, or plan-specific advice. Please consult your retirement plan advisor or attorney for guidance specific to your situation.
Business owners: what questions do you have about Solo 401(k) vs SEP IRA contribution limits?